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Mon, 22 Dec 2025 09:43:21 -0800 (PST) Received: from [172.16.1.8] ([2607:f2c0:b1e4:8e00:b6e2:5e18:4823:58ce]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-121724cfdd0sm47629542c88.4.2025.12.22.09.43.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Dec 2025 09:43:20 -0800 (PST) From: Peter Colberg Date: Mon, 22 Dec 2025 12:42:48 -0500 Subject: [PATCH] Revert duplicate "drm/amdgpu: disable peer-to-peer access for DCC-enabled GC12 VRAM surfaces" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251222-fix-duplicate-amdgpu-v1-1-18e928420d15@redhat.com> X-B4-Tracking: v=1; b=H4sIABeDSWkC/x2MWwqAIBAArxL73YJuSdBVog/LzRZ6iFYE0d2TP gdm5oHEUThBWzwQ+ZIk+5ZBlwWMs908o7jMQIqMJiKc5EZ3hkVGezDa1flwYl0r3QzaVIYHyGm InL1/2/Xv+wFZ1N7WZgAAAA== X-Change-ID: 20251222-fix-duplicate-amdgpu-44017b1535eb To: Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , David Airlie , Simona Vetter , Dave Airlie Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Peter Colberg X-Mailer: b4 0.14.2 This reverts commit 22a36e660d014925114feb09a2680bb3c2d1e279 once, which was merged twice due to an incorrect backmerge resolution. Fixes: ce0478b02ed2 ("Merge tag 'v6.18-rc6' into drm-next") Signed-off-by: Peter Colberg --- drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/= amd/amdgpu/amdgpu_dma_buf.c index e22cfa7c6d32f286de94c6e0947c20db41894b68..c1461317eb29877446e69562a58= e17a77203a79e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c @@ -83,18 +83,6 @@ static int amdgpu_dma_buf_attach(struct dma_buf *dmabuf, struct amdgpu_device *adev =3D amdgpu_ttm_adev(bo->tbo.bdev); int r; =20 - /* - * 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) >=3D IP_VERSION(12, 0, 0) && - bo->flags & AMDGPU_GEM_CREATE_GFX12_DCC) - attach->peer2peer =3D false; - /* * Disable peer-to-peer access for DCC-enabled VRAM surfaces on GFX12+. * Such buffers cannot be safely accessed over P2P due to device-local --- base-commit: 9448598b22c50c8a5bb77a9103e2d49f134c9578 change-id: 20251222-fix-duplicate-amdgpu-44017b1535eb Best regards, --=20 Peter Colberg