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8d85a7a4f2
Some SR-IOV PF drivers implement .sriov_configure(), which allows user-space to enable VFs by writing the desired number of VFs to the sysfs "sriov_numvfs" file (see sriov_numvfs_store()). The PCI core limits the number of VFs to the TotalVFs advertised by the device in its SR-IOV capability. The PF driver can limit the number of VFs to even fewer (it may have pre-allocated data structures or knowledge of device limitations) by calling pci_sriov_set_totalvfs(), but previously it could not limit the VFs to 0. Change pci_sriov_get_totalvfs() so it always respects the VF limit imposed by the PF driver, even if the limit is 0. This sequence: pci_sriov_set_totalvfs(dev, 0); x = pci_sriov_get_totalvfs(dev); previously set "x" to TotalVFs from the SR-IOV capability. Now it will set "x" to 0. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> [bhelgaas: split to separate patch] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.