This is a note to let you know that I've just added the patch titled
drm/amdgpu: skip amdgpu_device_cache_pci_state under sriov
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-skip-amdgpu_device_cache_pci_state-under-.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7df9b3b1299c26cc67872f4ef1e5bc7451cb44c8
Author: Victor Zhao <Victor.Zhao@xxxxxxx>
Date: Thu Oct 24 13:40:39 2024 +0800
drm/amdgpu: skip amdgpu_device_cache_pci_state under sriov
[ Upstream commit afe260df55ac280cd56306248cb6d8a6b0db095c ]
Under sriov, host driver will save and restore vf pci cfg space during
reset. And during device init, under sriov, pci_restore_state happens after
fullaccess released, and it can have race condition with mmio protection
enable from host side leading to missing interrupts.
So skip amdgpu_device_cache_pci_state for sriov.
Signed-off-by: Victor Zhao <Victor.Zhao@xxxxxxx>
Acked-by: Lijo Lazar <lijo.lazar@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index e833c02fabff3..2f42471e578ad 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -5088,6 +5088,9 @@ bool amdgpu_device_cache_pci_state(struct pci_dev *pdev)
struct amdgpu_device *adev = drm_to_adev(dev);
int r;
+ if (amdgpu_sriov_vf(adev))
+ return false;
+
r = pci_save_state(pdev);
if (!r) {
kfree(adev->pci_state);
