[AMD Official Use Only - AMD Internal Distribution Only]
+ @Skvortsov, Victor<mailto:victor.skvort...@amd.com>/@Gande, Shravan kumar<mailto:shravankumar.ga...@amd.com> Hi Victor/Shravan, Could you please help review the code at your convenience? Regards, Hawking -----Original Message----- From: Liu, Xiang(Dean) <xiang....@amd.com> Sent: Tuesday, August 19, 2025 13:26 To: amd-gfx@lists.freedesktop.org Cc: Zhang, Hawking <hawking.zh...@amd.com>; Zhou1, Tao <tao.zh...@amd.com>; Yang, Stanley <stanley.y...@amd.com>; Chai, Thomas <yipeng.c...@amd.com>; Liu, Xiang(Dean) <xiang....@amd.com> Subject: [PATCH 2/2] drm/amdgpu: Check VF critical region before RAS poison injection Check VF critical region before RAS poison injection to ensure that the poison injection will not hit the VF critical region. Signed-off-by: Xiang Liu <xiang....@amd.com<mailto:xiang....@amd.com>> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index b00cbb927ca8..6730de574fdc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -219,10 +219,17 @@ static int amdgpu_check_address_validity(struct amdgpu_device *adev, struct amdgpu_vram_block_info blk_info; uint64_t page_pfns[32] = {0}; int i, ret, count; + bool hit = false; if (amdgpu_ip_version(adev, UMC_HWIP, 0) < IP_VERSION(12, 0, 0)) return 0; + if (amdgpu_sriov_vf(adev)) { + if (amdgpu_virt_check_vf_critical_region(adev, address, &hit)) + return -EPERM; + return hit ? -EACCES : 0; + } + if ((address >= adev->gmc.mc_vram_size) || (address >= RAS_UMC_INJECT_ADDR_LIMIT)) return -EFAULT; -- 2.34.1
