diff options
| author | Alexei Starovoitov <ast@kernel.org> | 2025-11-14 17:43:41 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-11-14 17:43:41 -0800 |
| commit | e47b68bda4de6a848a8b6c79316542326a8fb3ca (patch) | |
| tree | bb1300a3177f5c92e2698fab42178f160f41316e /drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | |
| parent | ef2c0b2e56ad710a2b5a85b678a6c685756e03a4 (diff) | |
| parent | 7a0892d2836e12cc61b6823f888629a3eb64e268 (diff) | |
| download | linux-next-e47b68bda4de6a848a8b6c79316542326a8fb3ca.tar.gz linux-next-e47b68bda4de6a848a8b6c79316542326a8fb3ca.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf after 6.18-rc5+
Cross-merge BPF and other fixes after downstream PR.
Minor conflict in kernel/bpf/helpers.c
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c index 8561ad7f6180..ed3bef1edfe4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c @@ -82,6 +82,18 @@ static int amdgpu_dma_buf_attach(struct dma_buf *dmabuf, struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); + /* + * Disable peer-to-peer access for DCC-enabled VRAM surfaces on GFX12+. + * Such buffers cannot be safely accessed over P2P due to device-local + * compression metadata. Fallback to system-memory path instead. + * Device supports GFX12 (GC 12.x or newer) + * BO was created with the AMDGPU_GEM_CREATE_GFX12_DCC flag + * + */ + if (amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(12, 0, 0) && + bo->flags & AMDGPU_GEM_CREATE_GFX12_DCC) + attach->peer2peer = false; + if (!amdgpu_dmabuf_is_xgmi_accessible(attach_adev, bo) && pci_p2pdma_distance(adev->pdev, attach->dev, false) < 0) attach->peer2peer = false; |