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linux/samples/vfio-mdev/mbochs.c

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sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio-mdev: add missing MODULE_DESCRIPTION() macros Since commit 1fffe7a34c89 ("script: modpost: emit a warning when the description is missing"), a module without a MODULE_DESCRIPTION() will result in a warning with make W=1. The following warnings are being observed in samples/vfio-mdev: WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mtty.o WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mdpy.o WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mdpy-fb.o WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mbochs.o Add the missing invocations of the MODULE_DESCRIPTION() macro to these modules. And in the case of mtty.c, remove the now redundant instance of the MODULE_INFO() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240715-md-vfio-mdev-v2-1-59a4c5e924bc@quicinc.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-07-15 12:27:09 -07:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
vfio/mdev: consolidate all the name sysfs into the core code Every driver just emits a static string, simply add a field to the mdev_type for the driver to fill out or fall back to the sysfs name and provide a standard sysfs show function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-12-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:49 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
vfio/mdev: consolidate all the name sysfs into the core code Every driver just emits a static string, simply add a field to the mdev_type for the driver to fill out or fall back to the sysfs name and provide a standard sysfs show function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-12-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:49 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
vfio/mdev: consolidate all the name sysfs into the core code Every driver just emits a static string, simply add a field to the mdev_type for the driver to fill out or fall back to the sysfs name and provide a standard sysfs show function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-12-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:49 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: make mbochs_class constant Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the mbochs_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Link: https://lore.kernel.org/r/20240301-class_cleanup-vfio-v1-2-9236d69083f5@marliere.net Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-03-01 14:51:48 -03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: embedd struct mdev_parent in the parent data structure Simplify mdev_{un}register_device by requiring the caller to pass in a structure allocate as part of the parent device structure. This removes the need for a list of parents and the separate mdev_parent refcount as we can simplify rely on the reference to the parent device. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-5-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:42 +02:00
vfio/mbochs: Fix missing error unwind of mbochs_used_mbytes Convert mbochs to use an atomic scheme for this like mtty was changed into. The atomic fixes various race conditions with probing. Add the missing error unwind. Also add the missing kfree of mdev_state->pages. Fixes: 681c1615f891 ("vfio/mbochs: Convert to use vfio_register_group_dev()") Reported-by: Cornelia Huck <cohuck@redhat.com> Co-developed-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Link: https://lore.kernel.org/r/2-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-05 22:18:58 -03:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
sample: vfio-mdev: avoid deadlock in mdev_access() mdev_access() calls mbochs_get_page() with mdev_state->ops_lock held, while mbochs_get_page() locks the mutex by itself. It leads to unavoidable deadlock. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-07-06 23:50:06 +03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
sample: vfio-mdev: avoid deadlock in mdev_access() mdev_access() calls mbochs_get_page() with mdev_state->ops_lock held, while mbochs_get_page() locks the mutex by itself. It leads to unavoidable deadlock. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-07-06 23:50:06 +03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Fix missing error unwind of mbochs_used_mbytes Convert mbochs to use an atomic scheme for this like mtty was changed into. The atomic fixes various race conditions with probing. Add the missing error unwind. Also add the missing kfree of mdev_state->pages. Fixes: 681c1615f891 ("vfio/mbochs: Convert to use vfio_register_group_dev()") Reported-by: Cornelia Huck <cohuck@redhat.com> Co-developed-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Link: https://lore.kernel.org/r/2-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-05 22:18:58 -03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
vfio/mdev: consolidate all the name sysfs into the core code Every driver just emits a static string, simply add a field to the mdev_type for the driver to fill out or fall back to the sysfs name and provide a standard sysfs show function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-12-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:49 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Fix missing error unwind of mbochs_used_mbytes Convert mbochs to use an atomic scheme for this like mtty was changed into. The atomic fixes various race conditions with probing. Add the missing error unwind. Also add the missing kfree of mdev_state->pages. Fixes: 681c1615f891 ("vfio/mbochs: Convert to use vfio_register_group_dev()") Reported-by: Cornelia Huck <cohuck@redhat.com> Co-developed-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Link: https://lore.kernel.org/r/2-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-05 22:18:58 -03:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
sample/vfio-mdev: Change return type to vm_fault_t convert mbochs_region_vm_fault and mbochs_dmabuf_vm_fault to return vm_fault_t type. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-07-04 21:00:14 +05:30
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
sample/vfio-mdev: Change return type to vm_fault_t convert mbochs_region_vm_fault and mbochs_dmabuf_vm_fault to return vm_fault_t type. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-07-04 21:00:14 +05:30
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
samples: vfio-mdev/mbochs: fix common struct sg_table related issues The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function returns the number of the created entries in the DMA address space. However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and dma_unmap_sg must be called with the original number of the entries passed to the dma_map_sg(). struct sg_table is a common structure used for describing a non-contiguous memory buffer, used commonly in the DRM and graphics subsystems. It consists of a scatterlist with memory pages and DMA addresses (sgl entry), as well as the number of scatterlist entries: CPU pages (orig_nents entry) and DMA mapped pages (nents entry). It turned out that it was a common mistake to misuse nents and orig_nents entries, calling DMA-mapping functions with a wrong number of entries or ignoring the number of mapped entries returned by the dma_map_sg() function. To avoid such issues, lets use a common dma-mapping wrappers operating directly on the struct sg_table objects and use scatterlist page iterators where possible. This, almost always, hides references to the nents and orig_nents entries, making the code robust, easier to follow and copy/paste safe. While touching this code, also add missing call to dma_unmap_sgtable. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
2020-04-30 13:57:22 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
samples: vfio-mdev/mbochs: fix common struct sg_table related issues The Documentation/DMA-API-HOWTO.txt states that the dma_map_sg() function returns the number of the created entries in the DMA address space. However the subsequent calls to the dma_sync_sg_for_{device,cpu}() and dma_unmap_sg must be called with the original number of the entries passed to the dma_map_sg(). struct sg_table is a common structure used for describing a non-contiguous memory buffer, used commonly in the DRM and graphics subsystems. It consists of a scatterlist with memory pages and DMA addresses (sgl entry), as well as the number of scatterlist entries: CPU pages (orig_nents entry) and DMA mapped pages (nents entry). It turned out that it was a common mistake to misuse nents and orig_nents entries, calling DMA-mapping functions with a wrong number of entries or ignoring the number of mapped entries returned by the dma_map_sg() function. To avoid such issues, lets use a common dma-mapping wrappers operating directly on the struct sg_table objects and use scatterlist page iterators where possible. This, almost always, hides references to the nents and orig_nents entries, making the code robust, easier to follow and copy/paste safe. While touching this code, also add missing call to dma_unmap_sgtable. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
2020-04-30 13:57:22 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert mbochs to use vfio_info_add_capability() This driver open codes the cap chain manipulations. Instead use vfio_info_add_capability() and the get_region_info_caps() op. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/16-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2025-11-07 13:41:32 -04:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert mbochs to use vfio_info_add_capability() This driver open codes the cap chain manipulations. Instead use vfio_info_add_capability() and the get_region_info_caps() op. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/16-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2025-11-07 13:41:32 -04:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert mbochs to use vfio_info_add_capability() This driver open codes the cap chain manipulations. Instead use vfio_info_add_capability() and the get_region_info_caps() op. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/16-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2025-11-07 13:41:32 -04:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Provide a get_region_info op Move it out of mbochs_ioctl() and re-indent it. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Pranjal Shrivastava <praan@google.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/8-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2025-11-07 13:41:24 -04:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: add edid support to mbochs sample driver Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-09-21 10:30:13 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio: use __aligned_u64 in struct vfio_device_gfx_plane_info The memory layout of struct vfio_device_gfx_plane_info is architecture-dependent due to a u64 field and a struct size that is not a multiple of 8 bytes: - On x86_64 the struct size is padded to a multiple of 8 bytes. - On x32 the struct size is only a multiple of 4 bytes, not 8. - Other architectures may vary. Use __aligned_u64 to make memory layout consistent. This reduces the chance of 32-bit userspace on a 64-bit kernel breakage. This patch increases the struct size on x32 but this is safe because of the struct's argsz field. The kernel may grow the struct as long as it still supports smaller argsz values from userspace (e.g. applications compiled against older kernel headers). Suggested-by: Jason Gunthorpe <jgg@ziepe.ca> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Link: https://lore.kernel.org/r/20230918205617.1478722-3-stefanha@redhat.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2023-09-18 16:56:16 -04:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Fix close when multiple device FDs are open mbochs_close() iterates over global device state and frees it. Currently this is done every time a device FD is closed, but if multiple device FDs are open this could corrupt other still active FDs. Change this to use close_device() so it only runs on the last close. Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/11-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-05 22:19:07 -03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: Fix missing static's on MDEV_TYPE_ATTR's These should always be prefixed with static, otherwise compilation will fail on non-modular builds with ld: samples/vfio-mdev/mbochs.o:(.data+0x2e0): multiple definition of `mdev_type_attr_name'; samples/vfio-mdev/mdpy.o:(.data+0x240): first defined here Fixes: a5e6e6505f38 ("sample: vfio bochs vbe display (host device for bochs-drm)") Fixes: d61fc96f47fd ("sample: vfio mdev display - host device") Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Message-Id: <1-v2-d36939638fc6+d54-vfio2_jgg@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-04-06 16:40:24 -03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: consolidate all the description sysfs into the core code Every driver just emits a string, simply add a method to the mdev_driver to return it and provide a standard sysfs show function. Remove the now unused types_attrs field in struct mdev_driver and the support code for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Link: https://lore.kernel.org/r/20220923092652.100656-14-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:51 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: consolidate all the available_instance sysfs into the core code Every driver just print a number, simply add a method to the mdev_driver to return it and provide a standard sysfs show function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-13-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:50 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: consolidate all the available_instance sysfs into the core code Every driver just print a number, simply add a method to the mdev_driver to return it and provide a standard sysfs show function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-13-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:50 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mbochs: Fix close when multiple device FDs are open mbochs_close() iterates over global device state and frees it. Currently this is done every time a device FD is closed, but if multiple device FDs are open this could corrupt other still active FDs. Change this to use close_device() so it only runs on the last close. Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/11-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-05 22:19:07 -03:00
vfio/mbochs: Use the new device life cycle helpers and manage avail_mbytes inside @init/@release. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/20220921104401.38898-8-kevin.tian@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-21 18:43:53 +08:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mbochs: Convert mbochs to use vfio_info_add_capability() This driver open codes the cap chain manipulations. Instead use vfio_info_add_capability() and the get_region_info_caps() op. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/16-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com Signed-off-by: Alex Williamson <alex@shazbot.org>
2025-11-07 13:41:32 -04:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mdev: Uses the vfio emulated iommufd ops set in the mdev sample drivers This harmonizes the no-DMA devices (the vfio-mdev sample drivers) with the emulated devices (gvt-g, vfio-ap etc.). It makes it easier to add BIND_IOMMUFD user interface which requires to return an iommufd ID to represent the device/iommufd bond. Link: https://lore.kernel.org/r/20230327093351.44505-6-yi.l.liu@intel.com Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Terrence Xu <terrence.xu@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2023-03-27 02:33:50 -07:00
vfio-iommufd: Add detach_ioas support for emulated VFIO devices This prepares for adding DETACH ioctl for emulated VFIO devices. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Tested-by: Terrence Xu <terrence.xu@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Tested-by: Matthew Rosato <mjrosato@linux.ibm.com> Tested-by: Yanting Jiang <yanting.jiang@intel.com> Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Tested-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Link: https://lore.kernel.org/r/20230718135551.6592-16-yi.l.liu@intel.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2023-07-18 06:55:40 -07:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mdev: consolidate all the device_api sysfs into the core code Every driver just emits a static string, simply feed it through the ops and provide a standard sysfs show function. Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:48 +02:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mdev: consolidate all the available_instance sysfs into the core code Every driver just print a number, simply add a method to the mdev_driver to return it and provide a standard sysfs show function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-13-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:50 +02:00
vfio/mdev: consolidate all the description sysfs into the core code Every driver just emits a string, simply add a method to the mdev_driver to return it and provide a standard sysfs show function. Remove the now unused types_attrs field in struct mdev_driver and the support code for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Link: https://lore.kernel.org/r/20220923092652.100656-14-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:51 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Fix missing error unwind of mbochs_used_mbytes Convert mbochs to use an atomic scheme for this like mtty was changed into. The atomic fixes various race conditions with probing. Add the missing error unwind. Also add the missing kfree of mdev_state->pages. Fixes: 681c1615f891 ("vfio/mbochs: Convert to use vfio_register_group_dev()") Reported-by: Cornelia Huck <cohuck@redhat.com> Co-developed-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Link: https://lore.kernel.org/r/2-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-05 22:18:58 -03:00
samples/vfio-mdev/mbochs: expand minor range when registering chrdev region Actually, total amount of available minor number for a single major is MINORMARK + 1. So expand minor range when registering chrdev region. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2019-02-12 13:59:30 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
samples/vfio-mdev/mbochs: expand minor range when registering chrdev region Actually, total amount of available minor number for a single major is MINORMARK + 1. So expand minor range when registering chrdev region. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2019-02-12 13:59:30 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mbochs: make mbochs_class constant Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the mbochs_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Link: https://lore.kernel.org/r/20240301-class_cleanup-vfio-v1-2-9236d69083f5@marliere.net Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-03-01 14:51:48 -03:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/mbochs: make mbochs_class constant Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the mbochs_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Link: https://lore.kernel.org/r/20240301-class_cleanup-vfio-v1-2-9236d69083f5@marliere.net Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-03-01 14:51:48 -03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/ap/ccw/samples: Fix device_register() unwind path We always need to call put_device() if device_register() fails. All vfio drivers calling device_register() include a similar unwind stack via gotos, therefore split device_unregister() into its device_del() and put_device() components in the unwind path, and add a goto target to handle only the put_device() requirement. Reported-by: Ruan Jinjie <ruanjinjie@huawei.com> Link: https://lore.kernel.org/all/20221118032827.3725190-1-ruanjinjie@huawei.com Fixes: d61fc96f47fd ("sample: vfio mdev display - host device") Fixes: 9d1a546c53b4 ("docs: Sample driver to demonstrate how to use Mediated device framework.") Fixes: a5e6e6505f38 ("sample: vfio bochs vbe display (host device for bochs-drm)") Fixes: 9e6f07cd1eaa ("vfio/ccw: create a parent struct") Fixes: 36360658eb5a ("s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem") Cc: Tony Krowiak <akrowiak@linux.ibm.com> Cc: Halil Pasic <pasic@linux.ibm.com> Cc: Jason Herne <jjherne@linux.ibm.com> Cc: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com> Link: https://lore.kernel.org/r/166999942139.645727.12439756512449846442.stgit@omen Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-12-02 09:46:15 -07:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: simplify mdev_type handling Instead of abusing struct attribute_group to control initialization of struct mdev_type, just define the actual attributes in the mdev_driver, allocate the mdev_type structures in the caller and pass them to mdev_register_parent. This allows the caller to use container_of to get at the containing structure and thus significantly simplify the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-6-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:43 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
vfio/ap/ccw/samples: Fix device_register() unwind path We always need to call put_device() if device_register() fails. All vfio drivers calling device_register() include a similar unwind stack via gotos, therefore split device_unregister() into its device_del() and put_device() components in the unwind path, and add a goto target to handle only the put_device() requirement. Reported-by: Ruan Jinjie <ruanjinjie@huawei.com> Link: https://lore.kernel.org/all/20221118032827.3725190-1-ruanjinjie@huawei.com Fixes: d61fc96f47fd ("sample: vfio mdev display - host device") Fixes: 9d1a546c53b4 ("docs: Sample driver to demonstrate how to use Mediated device framework.") Fixes: a5e6e6505f38 ("sample: vfio bochs vbe display (host device for bochs-drm)") Fixes: 9e6f07cd1eaa ("vfio/ccw: create a parent struct") Fixes: 36360658eb5a ("s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem") Cc: Tony Krowiak <akrowiak@linux.ibm.com> Cc: Halil Pasic <pasic@linux.ibm.com> Cc: Jason Herne <jjherne@linux.ibm.com> Cc: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com> Link: https://lore.kernel.org/r/166999942139.645727.12439756512449846442.stgit@omen Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-12-02 09:46:15 -07:00
vfio/mbochs: make mbochs_class constant Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the mbochs_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Link: https://lore.kernel.org/r/20240301-class_cleanup-vfio-v1-2-9236d69083f5@marliere.net Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-03-01 14:51:48 -03:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
samples/vfio-mdev/mbochs: expand minor range when registering chrdev region Actually, total amount of available minor number for a single major is MINORMARK + 1. So expand minor range when registering chrdev region. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2019-02-12 13:59:30 +08:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mdev: embedd struct mdev_parent in the parent data structure Simplify mdev_{un}register_device by requiring the caller to pass in a structure allocate as part of the parent device structure. This removes the need for a list of parents and the separate mdev_parent refcount as we can simplify rely on the reference to the parent device. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20220923092652.100656-5-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2022-09-23 11:26:42 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
vfio/mbochs: Convert to use vfio_register_group_dev() This is straightforward conversion, the mdev_state is actually serving as the vfio_device and we can replace all the mdev_get_drvdata()'s and the wonky dead code with a simple container_of(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20210617142218.1877096-11-hch@lst.de Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-06-17 16:22:18 +02:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
samples/vfio-mdev/mbochs: expand minor range when registering chrdev region Actually, total amount of available minor number for a single major is MINORMARK + 1. So expand minor range when registering chrdev region. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2019-02-12 13:59:30 +08:00
vfio/mbochs: make mbochs_class constant Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the mbochs_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Link: https://lore.kernel.org/r/20240301-class_cleanup-vfio-v1-2-9236d69083f5@marliere.net Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-03-01 14:51:48 -03:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00
module: Convert symbol namespace to string literal Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-12-02 15:59:47 +01:00
sample: vfio bochs vbe display (host device for bochs-drm) Display device, demo-ing the vfio dmabuf display interface (VFIO_GFX_PLANE_TYPE_DMABUF). Compatible enough to qemu stdvga that bochs-drm.ko can be used as guest driver. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-05-11 09:05:04 -06:00