From: Hawking Zhang Date: Fri, 21 Jun 2024 03:25:30 +0000 (+0800) Subject: drm/amdgpu: Fix register access violation X-Git-Tag: v6.11-rc1~141^2~8^2~71 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9da0f7736763aa0fbf63bb15060c6827135f3f67;p=thirdparty%2Fkernel%2Flinux.git drm/amdgpu: Fix register access violation fault_status is read only register. fault_cntl is not accessible from guest environment. Signed-off-by: Hawking Zhang Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_2.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_2.c index e14acab5cceb1..72109abe7c86c 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_2.c +++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_2.c @@ -629,9 +629,11 @@ static bool gfxhub_v1_2_query_utcl2_poison_status(struct amdgpu_device *adev, status = RREG32_SOC15(GC, GET_INST(GC, xcc_id), regVM_L2_PROTECTION_FAULT_STATUS); fed = REG_GET_FIELD(status, VM_L2_PROTECTION_FAULT_STATUS, FED); - /* reset page fault status */ - WREG32_P(SOC15_REG_OFFSET(GC, GET_INST(GC, xcc_id), - regVM_L2_PROTECTION_FAULT_STATUS), 1, ~1); + if (!amdgpu_sriov_vf(adev)) { + /* clear page fault status and address */ + WREG32_P(SOC15_REG_OFFSET(GC, GET_INST(GC, xcc_id), + regVM_L2_PROTECTION_FAULT_CNTL), 1, ~1); + } return fed; } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 88b4644f8e960..b73136d390cc0 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -672,7 +672,8 @@ static int gmc_v9_0_process_interrupt(struct amdgpu_device *adev, (amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(9, 4, 2))) return 0; - WREG32_P(hub->vm_l2_pro_fault_cntl, 1, ~1); + if (!amdgpu_sriov_vf(adev)) + WREG32_P(hub->vm_l2_pro_fault_cntl, 1, ~1); amdgpu_vm_update_fault_cache(adev, entry->pasid, addr, status, vmhub); diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c index 7a1ff298417ab..8d7267a013d24 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c @@ -566,9 +566,11 @@ static bool mmhub_v1_8_query_utcl2_poison_status(struct amdgpu_device *adev, status = RREG32_SOC15(MMHUB, hub_inst, regVM_L2_PROTECTION_FAULT_STATUS); fed = REG_GET_FIELD(status, VM_L2_PROTECTION_FAULT_STATUS, FED); - /* reset page fault status */ - WREG32_P(SOC15_REG_OFFSET(MMHUB, hub_inst, - regVM_L2_PROTECTION_FAULT_STATUS), 1, ~1); + if (!amdgpu_sriov_vf(adev)) { + /* clear page fault status and address */ + WREG32_P(SOC15_REG_OFFSET(MMHUB, hub_inst, + regVM_L2_PROTECTION_FAULT_STATUS), 1, ~1); + } return fed; }