Commit graph

10 commits

Author SHA1 Message Date
Linus Torvalds
4b99990cdf drm-next for 7.2-rc1
core:
 - add docbook for DRM_IOCTL_SYNCOBJ_EVENTFD
 - change signature of drm_connector_attach_hdr_output_metadata_property
 - dedup counter and timestamp retrieval in vblank code
 - parse AMD VSDB v3 in CTA extension blocks
 - add P230, Y7, XYYY2101010, T430, XVUY210101010 formats
 - don't call drop master on file close if not master
 - use drm_printf_indent in atomic / bridge
 - fix 32b format descriptions
 - docs: fix toctree
 - hdmi: add common TMDS character rates
 - fix drm_syncobj_find_fence leak
 
 rust:
 - introduce Higher-Ranked lifetime types
 - replace drvdata with scoped registration data
 - add GPUVM immediate mode abstraction for rust GPU drivers
 - introduce DeviceContext type state for drm::Device
 
 bridge:
 - clarify drm_bridge_get/put
 - create drm_get_bridge_by_endpoint and use it
 - analogix_dp: add panel probing
 - ite-it6211 - use drm audio hdmi helpers
 
 buddy:
 - add lockdep annotations
 
 dp:
 - add PR and VRR updates
 - mst: fix buffer overflows
 - add Adaptive Sync SDP decoding support
 - fix OOB reads in dp-mst
 
 ttm:
 - bump fpfn/lpfn to 64-bit
 
 scheduler:
 - change default to fair scheduler
 - map runqueue 1:1 with scheduler
 
 dma-buf:
 - port selftests to kunit
 - convert dma-buf system/heap allocators to module
 - add separate DMABUF_HEAPS_SYSTEM_CC_SHARED Kconfig
 
 udmabuf:
 - revert hugetlb support
 - fix error with CONFIG_DMA_API_DEBUG
 
 dma-fence:
 - fix tracepoints lifetime
 - remove unused signal on any support
 
 ras:
 - add clear error counter netlink command to drm ras
 
 gpusvm:
 - reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges
 - use IOVA allocations
 
 pagemap:
 - use IOVA allocations
 
 panels:
 - update to use ref counts
 - add support for CSW PNB601LS1-2, LGD LP116WHA-SPB1
 - add support for waveshare panels
 - CMN N116BCN-EA1, CMN N140HCA-EEK, IVO M140NWFQ R5,
 - IVO, R140NWFW R0, BOE NT140*, BOE NV133FHM-N4F,
 - AUO B140*, AUO B133HAN06.6 and AUO B116XTN02.3 eDP panels
 - Surface Pro 12 Panel
 
 xe:
 - add CRI PCI-IDs
 - debugfs add multi-lrc info
 - engine init cleanup
 - PF fair scheduling auto provisioning
 - system controller support for CRI/Xe3p
 - PXP state machine fixes
 - Reset/wedge/unload corner case fixes
 - Wedge path memory allocation fixes
 - PAT type cleanups
 - Reject unsafe PAT for CPU cached memory
 - OA improvements for CRI device memory
 - kernel doc syntax in xe headers
 - xe_drm.h documentation fixes
 - include guard cleanups
 - VF CCS memory pool
 - i915/xe step unification
 - Xe3p GT tuning fixes
 - forcewake cleanup in GT and GuC
 - admin-only PF mode
 - enable hwmon energy attributes for CRI
 - enable GT_MI_USER_INTERRUPT
 - refactor emit functions
 - oa workarounds
 - multi_queue: allow QUEUE_TIMESTAMP register
 - convert stolen memory to ttm range manager
 - use xe2 style blitter as a feature flag
 - make drm_driver const
 - add/use IRQ page to HW engine definition
 - fix oops when display disabled
 
 i915:
 - enable PIPEDMC_ERROR interrupt
 - more common display code refactoring
 - restructure DP/HDMI sink format handling
 - eliminate FB usage from lowlevel pinning code
 - panel replay bw optimization
 - integrate sharpness filter into the scaler
 - new fb_pin abstraction for xe/i915 fb transparent handling
 - skip inactive MST connectors on HDCP
 - start switching to display specific registers
 - use polling when irq unavailable
 - Adaptive-sync SDP prep
 
 amdgpu:
 - use drm_display_info for AMD VSDB data
 - Initial HDMI 2.1 FRL support
 - Initial DCN 4.2.1 support
 - GART fixes for non-4k pages
 - GC 11.5.6/SDMA 6.4.0/and other new IPs
 - GFX9/DCE6/Hawaii/SDMA4/GART/Userq fixes
 - Finish support for using multiple SDMA queues for TTM operations
 - SWSMU updates
 - GC 12.1 updates
 - SMU 15.0.8 updates
 - DCN 4.2 updates
 - DC type conversion fixes
 - Enable DC power module
 - Replay/PSR updates
 - SMU 13.x updates
 - Compute queue quantum MQD updates
 - ASPM fix
 - Align VKMS with common implementation
 - DC analog support fixes
 - UVD 3 fixes
 - TCC harvesting fixes for SI
 - GC 11 APU module reload fix
 - NBIO 6.3.2 support
 - IH 7.1 updates
 - DC cursor fixes
 - VCN/JPEG user fence fixes
 - DC support for connectors without DDC
 - Prefer ROM BAR for default VGA device
 - DC bandwidth fixes
 - Add PTL support for profiler
 - Introduce dc_plane_cm and migrate surface update color path
 - Add FRL registers for HDMI 2.1
 - Restructure VM state machine
 - Auxless ALPM support
 - GEM_OP locking/warning fixes
 - switch to system_dfl_wq
 
 amdkfd:
 - GPUVM TLB flush fix
 - Hotplug fix
 - Boundary check fixes
 - SVM fixes
 - CRIU fixes
 - add profiler API
 - MES 12.1 updates
 
 msm:
 - core:
   - fix shrinker documentation
   - IFPC enabled for gen8
   - PERFCNTR_CONFIG ioctl support
 - GPU:
   - reworked UBWC handling
   - a810 support
 - MDSS:
   - add support for Milos platform
   - reworked UBWC handling
 - DisplayPort:
   - reworked HPD handling as prep for MST
 - DPU:
   - Milos platform support
   - reworked UBWC handling
 - DSI:
   - Milos platform support
 
 nova:
 - Hopper/Blackwell enablement (GH100/GB100/GB202)
   - FSP support
   - 32-bit firmware support
   - HAL functions
 - refactor GSP boot/unload
 - GA100 support
 - VBIOS hardening/refactoring
 - Adopt higher order lifetime types
 
 tyr:
 - define register blocks
 - add shmem backed GEM objects
 - adopt higher order lifetime types
 - move clock cleanup into Drop
 
 radeon:
 - Hawaii SMU fixes
 - CS parser fix
 - use struct drm_edid instead of edid
 
 amdxdna:
 - export per-client BO memory via fdinfo
 - AIE4 device support
 - support medium/lower power modes
 - expandable device heap support
 - revert read-only user-pointer BO mappings
 
 ivpu:
 - support frequency limiting
 
 panthor:
 - enable GEM shrinker support
 - add eviction and reclaim info to fdinfo
 
 v3d:
 - enable runtime PM
 
 mgag200:
 - support XRGB1555 + C8
 
 ast:
 - support XRGB1555 + C8
 - use constants for lots of registers
 - fix register handling
 
 imagination:
 - fence handling refactoring
 
 nouveau:
 - fix sched double call
 - expose VBIOS on GSP-RM systems
 - add GA100 support
 
 virtio:
 - add VIRTIO_GPU_F_BLOB_ALIGNMENT flag
 - add deferred mapping support
 
 gud:
 - add RCade Display Adapter
 
 hibmc:
 - fix no connectors usage
 
 mediatek:
 - hdmi: convert error handling
 - simplify mtk_crtc allocation
 
 exynos:
 - move fbdev emulation to drm client buffers
 - use drm format helpers for geometry/size
 - adopt core DMA tracking
 - fix framebuffer offset handling
 
 renesas:
 - add RZ/T2H SOC support
 
 versilicon:
 - add cursor plane support
 
 tegra:
 - use drm client for framebuffer
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Merge tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "Highlights:
   - xe: add initial CRI platform support
   - amdgpu: initial HDMI 2.1 FRL support
   - rust: add some new type concepts for device lifetimes
   - scheduler: moves to a fair algorithm and lots of cleanups

  But it's mostly the usual mountain of changes across the board.

  core:
   - add docbook for DRM_IOCTL_SYNCOBJ_EVENTFD
   - change signature of drm_connector_attach_hdr_output_metadata_property
   - dedup counter and timestamp retrieval in vblank code
   - parse AMD VSDB v3 in CTA extension blocks
   - add P230, Y7, XYYY2101010, T430, XVUY210101010 formats
   - don't call drop master on file close if not master
   - use drm_printf_indent in atomic / bridge
   - fix 32b format descriptions
   - docs: fix toctree
   - hdmi: add common TMDS character rates
   - fix drm_syncobj_find_fence leak

  rust:
   - introduce Higher-Ranked lifetime types
   - replace drvdata with scoped registration data
   - add GPUVM immediate mode abstraction for rust GPU drivers
   - introduce DeviceContext type state for drm::Device

  bridge:
   - clarify drm_bridge_get/put
   - create drm_get_bridge_by_endpoint and use it
   - analogix_dp: add panel probing
   - ite-it6211 - use drm audio hdmi helpers

  buddy:
   - add lockdep annotations

  dp:
   - add PR and VRR updates
   - mst: fix buffer overflows
   - add Adaptive Sync SDP decoding support
   - fix OOB reads in dp-mst

  ttm:
   - bump fpfn/lpfn to 64-bit

  scheduler:
   - change default to fair scheduler
   - map runqueue 1:1 with scheduler

  dma-buf:
   - port selftests to kunit
   - convert dma-buf system/heap allocators to module
   - add separate DMABUF_HEAPS_SYSTEM_CC_SHARED Kconfig

  udmabuf:
   - revert hugetlb support
   - fix error with CONFIG_DMA_API_DEBUG

  dma-fence:
   - fix tracepoints lifetime
   - remove unused signal on any support

  ras:
   - add clear error counter netlink command to drm ras

  gpusvm:
   - reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges
   - use IOVA allocations

  pagemap:
   - use IOVA allocations

  panels:
   - update to use ref counts
   - add support for CSW PNB601LS1-2, LGD LP116WHA-SPB1
   - add support for waveshare panels
   - CMN N116BCN-EA1, CMN N140HCA-EEK, IVO M140NWFQ R5,
   - IVO, R140NWFW R0, BOE NT140*, BOE NV133FHM-N4F,
   - AUO B140*, AUO B133HAN06.6 and AUO B116XTN02.3 eDP panels
   - Surface Pro 12 Panel

  xe:
   - add CRI PCI-IDs
   - debugfs add multi-lrc info
   - engine init cleanup
   - PF fair scheduling auto provisioning
   - system controller support for CRI/Xe3p
   - PXP state machine fixes
   - Reset/wedge/unload corner case fixes
   - Wedge path memory allocation fixes
   - PAT type cleanups
   - Reject unsafe PAT for CPU cached memory
   - OA improvements for CRI device memory
   - kernel doc syntax in xe headers
   - xe_drm.h documentation fixes
   - include guard cleanups
   - VF CCS memory pool
   - i915/xe step unification
   - Xe3p GT tuning fixes
   - forcewake cleanup in GT and GuC
   - admin-only PF mode
   - enable hwmon energy attributes for CRI
   - enable GT_MI_USER_INTERRUPT
   - refactor emit functions
   - oa workarounds
   - multi_queue: allow QUEUE_TIMESTAMP register
   - convert stolen memory to ttm range manager
   - use xe2 style blitter as a feature flag
   - make drm_driver const
   - add/use IRQ page to HW engine definition
   - fix oops when display disabled

  i915:
   - enable PIPEDMC_ERROR interrupt
   - more common display code refactoring
   - restructure DP/HDMI sink format handling
   - eliminate FB usage from lowlevel pinning code
   - panel replay bw optimization
   - integrate sharpness filter into the scaler
   - new fb_pin abstraction for xe/i915 fb transparent handling
   - skip inactive MST connectors on HDCP
   - start switching to display specific registers
   - use polling when irq unavailable
   - Adaptive-sync SDP prep

  amdgpu:
   - use drm_display_info for AMD VSDB data
   - Initial HDMI 2.1 FRL support
   - Initial DCN 4.2.1 support
   - GART fixes for non-4k pages
   - GC 11.5.6/SDMA 6.4.0/and other new IPs
   - GFX9/DCE6/Hawaii/SDMA4/GART/Userq fixes
   - Finish support for using multiple SDMA queues for TTM operations
   - SWSMU updates
   - GC 12.1 updates
   - SMU 15.0.8 updates
   - DCN 4.2 updates
   - DC type conversion fixes
   - Enable DC power module
   - Replay/PSR updates
   - SMU 13.x updates
   - Compute queue quantum MQD updates
   - ASPM fix
   - Align VKMS with common implementation
   - DC analog support fixes
   - UVD 3 fixes
   - TCC harvesting fixes for SI
   - GC 11 APU module reload fix
   - NBIO 6.3.2 support
   - IH 7.1 updates
   - DC cursor fixes
   - VCN/JPEG user fence fixes
   - DC support for connectors without DDC
   - Prefer ROM BAR for default VGA device
   - DC bandwidth fixes
   - Add PTL support for profiler
   - Introduce dc_plane_cm and migrate surface update color path
   - Add FRL registers for HDMI 2.1
   - Restructure VM state machine
   - Auxless ALPM support
   - GEM_OP locking/warning fixes
   - switch to system_dfl_wq

  amdkfd:
   - GPUVM TLB flush fix
   - Hotplug fix
   - Boundary check fixes
   - SVM fixes
   - CRIU fixes
   - add profiler API
   - MES 12.1 updates

  msm:
   - core:
     - fix shrinker documentation
     - IFPC enabled for gen8
     - PERFCNTR_CONFIG ioctl support
   - GPU:
     - reworked UBWC handling
     - a810 support
   - MDSS:
     - add support for Milos platform
     - reworked UBWC handling
   - DisplayPort:
     - reworked HPD handling as prep for MST
   - DPU:
     - Milos platform support
     - reworked UBWC handling
   - DSI:
     - Milos platform support

  nova:
   - Hopper/Blackwell enablement (GH100/GB100/GB202)
     - FSP support
     - 32-bit firmware support
     - HAL functions
   - refactor GSP boot/unload
   - GA100 support
   - VBIOS hardening/refactoring
   - Adopt higher order lifetime types

  tyr:
   - define register blocks
   - add shmem backed GEM objects
   - adopt higher order lifetime types
   - move clock cleanup into Drop

  radeon:
   - Hawaii SMU fixes
   - CS parser fix
   - use struct drm_edid instead of edid

  amdxdna:
   - export per-client BO memory via fdinfo
   - AIE4 device support
   - support medium/lower power modes
   - expandable device heap support
   - revert read-only user-pointer BO mappings

  ivpu:
   - support frequency limiting

  panthor:
   - enable GEM shrinker support
   - add eviction and reclaim info to fdinfo

  v3d:
   - enable runtime PM

  mgag200:
   - support XRGB1555 + C8

  ast:
   - support XRGB1555 + C8
   - use constants for lots of registers
   - fix register handling

  imagination:
   - fence handling refactoring

  nouveau:
   - fix sched double call
   - expose VBIOS on GSP-RM systems
   - add GA100 support

  virtio:
   - add VIRTIO_GPU_F_BLOB_ALIGNMENT flag
   - add deferred mapping support

  gud:
   - add RCade Display Adapter

  hibmc:
   - fix no connectors usage

  mediatek:
   - hdmi: convert error handling
   - simplify mtk_crtc allocation

  exynos:
   - move fbdev emulation to drm client buffers
   - use drm format helpers for geometry/size
   - adopt core DMA tracking
   - fix framebuffer offset handling

  renesas:
   - add RZ/T2H SOC support

  versilicon:
   - add cursor plane support

  tegra:
   - use drm client for framebuffer"

* tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel: (1731 commits)
  dma-buf: move system_cc_shared heap under separate Kconfig
  accel/amdxdna: Clear sva pointer after unbind
  agp/amd64: Fix broken error propagation in agp_amd64_probe()
  accel/amdxdna: Require carveout when PASID and force_iova are disabled
  drm/amdkfd: always resume_all after suspend_all
  drm/amdgpu/gfx: move fault and EOP IRQ get/put to hw_init/hw_fini
  drm/amd/display: Consult MCCS FreeSync cap only if requested & supported
  drm/amd/pm: Use strscpy in profile mode parsing
  drm/amdkfd: Fix infinite loop parsing CRAT with zero subtype length
  drm/amdkfd: fix sysfs topology prop length on buffer truncation
  drm/amdgpu: drop retry loop in amdgpu_hmm_range_get_pages
  drm/amd/pm: bound OD parameter parsing to stack array size
  drm/amd/pm: Stop pp_od_clk_voltage emit at PAGE_SIZE
  drm/amdkfd: Unwind debug trap enable on copy_to_user failure
  drm/amdgpu: validate the mes firmware version for gfx12.1
  drm/amdgpu: validate the mes firmware version for gfx12
  drm/amdgpu: compare MES firmware version ucode for gfx11
  drm/amdkfd: Add bounds check for AMDKFD_IOC_WAIT_EVENTS
  drm/amdgpu: restart the CS if some parts of the VM are still invalidated
  drm/amd/display: use unsigned types for local pipe and REG_GET counters
  ...
2026-06-17 10:21:00 +01:00
Berkant Koc
7f87763f47
drm/hyperv: validate VMBus packet size in receive callback
hyperv_receive_sub() reads msg->vid_hdr.type and dispatches into one
of four message-type branches without knowing how many bytes the host
wrote into hv->recv_buf. The completion path then runs
memcpy(hv->init_buf, msg, VMBUS_MAX_PACKET_SIZE), so the consumer that
wakes on wait_for_completion_timeout() can read up to 16 KiB of
residue from a prior message as if it were the response payload.

Pass bytes_recvd into hyperv_receive_sub() and reject any packet that
does not cover the pipe + synthvid header. A single switch on
msg->vid_hdr.type then computes the type-specific payload size: the
three completion-driving types (SYNTHVID_VERSION_RESPONSE,
SYNTHVID_RESOLUTION_RESPONSE, SYNTHVID_VRAM_LOCATION_ACK) fall through
to a shared exit that requires that size before memcpy/complete, while
SYNTHVID_FEATURE_CHANGE validates its own payload and returns before
reading is_dirt_needed. Unknown types are dropped.

SYNTHVID_RESOLUTION_RESPONSE is variable length: the host fills
resolution_count entries, not the full SYNTHVID_MAX_RESOLUTION_COUNT
array. Validate the fixed prefix first so resolution_count can be
read, bound it against the array, then require only the count-sized
array, so the shorter responses the host actually sends are accepted.

Only run the sub-handler when vmbus_recvpacket() returned success. The
memcpy length is bytes_recvd, which is bounded by VMBUS_MAX_PACKET_SIZE
only on a successful receive; on -ENOBUFS vmbus_recvpacket() instead
reports the required length, which can exceed hv->recv_buf, so copying
bytes_recvd would read and write past the 16 KiB buffers. Gating on the
success return keeps the copy bounded. The nonzero-return path is itself
a malformed-message case and is now logged rather than silently skipped;
channel recovery is not attempted.

Rejected packets are reported via drm_err_ratelimited() rather than
silently dropped, matching the CoCo-hardened pattern in
hv_kvp_onchannelcallback().

Fixes: 76c56a5aff ("drm/hyperv: Add DRM driver for hyperv synthetic video device")
Cc: stable@vger.kernel.org # 5.14+
Signed-off-by: Berkant Koc <me@berkoc.com>
Assisted-by: Claude:claude-opus-4-7 berkoc-pipeline
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Hamza Mahfooz <hamzamahfooz@linux.microsoft.com>
Link: https://patch.msgid.link/8200dbc199c7a9b75ac7e8af6c748d2189b5ebd5.1779542874.git.me@berkoc.com
2026-05-25 07:31:53 -04:00
Berkant Koc
13d33b9ef6
drm/hyperv: validate resolution_count and fix WIN8 fallback
A SYNTHVID_RESOLUTION_RESPONSE with resolution_count > 64 walks past
the supported_resolution[SYNTHVID_MAX_RESOLUTION_COUNT] array in the
parse loop. Bound resolution_count against the array size, folded
into the existing zero-check.

When the WIN10 resolution probe fails, the caller in
hyperv_connect_vsp() left hv->screen_*_max / preferred_* unpopulated,
which sets mode_config.max_width / max_height to 0 and makes
drm_internal_framebuffer_create() reject every userspace framebuffer
with -EINVAL. The pre-WIN10 branch had the same gap for
preferred_width / preferred_height. Use a single post-probe fallback
guarded by screen_width_max == 0 so both paths converge on the WIN8
defaults.

Signed-off-by: Berkant Koc <me@berkoc.com>
Assisted-by: Claude:claude-opus-4-7 berkoc-pipeline
Fixes: 76c56a5aff ("drm/hyperv: Add DRM driver for hyperv synthetic video device")
Cc: stable@vger.kernel.org # 5.14+
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Hamza Mahfooz <hamzamahfooz@linux.microsoft.com>
Link: https://patch.msgid.link/6945b22419c7d404b4954a113de2ac9c900dba93.1779542874.git.me@berkoc.com
2026-05-25 07:31:36 -04:00
Hamza Mahfooz
241061119a
drm/hyperv: use VMBUS_RING_SIZE()
VMBUS ring buffers must be page aligned. So, use VMBUS_RING_SIZE() to
ensure they are always aligned and large enough to hold all of the
relevant data.

Cc: stable@kernel.vger.org
Fixes: 76c56a5aff ("drm/hyperv: Add DRM driver for hyperv synthetic video device")
Signed-off-by: Hamza Mahfooz <hamzamahfooz@linux.microsoft.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://patch.msgid.link/20260425181719.1538483-2-hamzamahfooz@linux.microsoft.com
2026-04-26 07:48:56 -04:00
Prasanna Kumar T S M
8f582bcd13 drm/hyperv: Remove reference to hyperv_fb driver
Remove hyperv_fb reference as the driver is removed.

Signed-off-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2026-02-14 11:09:38 +01:00
Saurabh Sengar
4c3386f64a drm/hyperv: Add ratelimit on error message
Due to a full ring buffer, the driver may be unable to send updates to
the Hyper-V host.  But outputing the error message can make the problem
worse because console output is also typically written to the frame
buffer.
Rate limiting the error message, also output the error code for additional
diagnosability.

Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1662736193-31379-1-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
2022-09-29 16:28:28 +00:00
Michael Kelley
ac6811a9b3 drm/hyperv: Remove support for Hyper-V 2008 and 2008R2/Win7
The DRM Hyper-V driver has special case code for running on the first
released versions of Hyper-V: 2008 and 2008 R2/Windows 7.  These versions
are now out of support (except for extended security updates) and lack
support for performance features that are needed for effective production
usage of Linux guests.

The negotiation of the VMbus protocol versions required by these old
Hyper-V versions has been removed from the VMbus driver.  So now remove
the handling of these VMbus protocol versions from the DRM Hyper-V
driver.

Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Deepak Rawat <drawat.floss@gmail.com>
Reviewed-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/1651509391-2058-5-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
2022-05-11 17:49:49 +00:00
Dexuan Cui
b253c3026c drm/hyperv: Fix double mouse pointers
Hyper-V supports a hardware cursor feature. It is not used by Linux VM,
but the Hyper-V host still draws a point as an extra mouse pointer,
which is unwanted, especially when Xorg is running.

The hyperv_fb driver uses synthvid_send_ptr() to hide the unwanted pointer.
When the hyperv_drm driver was developed, the function synthvid_send_ptr()
was not copied from the hyperv_fb driver. Fix the issue by adding the
function into hyperv_drm.

Fixes: 76c56a5aff ("drm/hyperv: Add DRM driver for hyperv synthetic video device")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Deepak Rawat <drawat.floss@gmail.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916193644.45650-1-decui@microsoft.com
Signed-off-by: Dave Airlie <airlied@redhat.com>
2021-10-15 15:04:44 +10:00
Deepak Rawat
25bfa95656 drm/hyperv: Handle feature change message from device
Virtual device inform if screen update is needed or not with
SYNTHVID_FEATURE_CHANGE message. Handle this message to set dirt_needed
flag.

Suggested-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Deepak Rawat <drawat.floss@gmail.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527112230.1274-2-drawat.floss@gmail.com
2021-06-07 08:04:10 -07:00
Deepak Rawat
76c56a5aff drm/hyperv: Add DRM driver for hyperv synthetic video device
DRM driver for hyperv synthetic video device, based on hyperv_fb
framebuffer driver. Also added config option "DRM_HYPERV" to enabled
this driver.

v2:
- Add support for gen2 VM
- Fixed review comments

v3:
- Split into multiple files as suggested by Thomas Zimmermann
- Fixed hibernation issue as suggested by Dexuan Cui
- Use ioremap_cache as suggested by Dexuan Cui
- Incorporated other review comments

v4:
- Fix bitrotted code
- Review comments
- Updated the copyright and license to match hyperv_fb

v5:
- Address review comments and rebased with drm-misc-next

v6:
- Minor code/comment improvement as suggested by Dexuan Cui

Signed-off-by: Deepak Rawat <drawat.floss@gmail.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527112230.1274-1-drawat.floss@gmail.com
2021-06-07 08:04:10 -07:00