If a 2nd fault comes in before the 1st is handled, the 1st fault will clear out the FAULT STATUS registers before the 2nd fault is handled. Thus we get a lot of zeroes. If status=0, just skip the L2 fault status information, to avoid confusion of why some VM fault status prints in dmesg are all zeroes. Signed-off-by: Kent Russell <kent.russell@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 5 ++++- drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 5 ++++- drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c | 5 ++++- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 6 ++++++ 4 files changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c index 5cf2002fcba8..5fe7a1c74ff1 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c @@ -175,7 +175,10 @@ static int gmc_v10_0_process_interrupt(struct amdgpu_device *adev, addr, entry->client_id, soc15_ih_clientid_name[entry->client_id]); - if (!amdgpu_sriov_vf(adev)) + /* Only print L2 fault status if the status register could be read and + * contains useful information + */ + if (status != 0) hub->vmhub_funcs->print_l2_protection_fault_status(adev, status); diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c index 4df4d73038f8..25a3dee27d81 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c @@ -144,7 +144,10 @@ static int gmc_v11_0_process_interrupt(struct amdgpu_device *adev, dev_err(adev->dev, " in page starting at address 0x%016llx from client %d\n", addr, entry->client_id); - if (!amdgpu_sriov_vf(adev)) + /* Only print L2 fault status if the status register could be read and + * contains useful information + */ + if (status != 0) hub->vmhub_funcs->print_l2_protection_fault_status(adev, status); } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c index e33f9e9058cc..3dee7474c06d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c @@ -137,7 +137,10 @@ static int gmc_v12_0_process_interrupt(struct amdgpu_device *adev, dev_err(adev->dev, " in page starting at address 0x%016llx from client %d\n", addr, entry->client_id); - if (!amdgpu_sriov_vf(adev)) + /* Only print L2 fault status if the status register could be read and + * contains useful information + */ + if (status != 0) hub->vmhub_funcs->print_l2_protection_fault_status(adev, status); } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 010db0e58650..f43ded8a0aab 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -672,6 +672,12 @@ 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; + /* Only print L2 fault status if the status register could be read and + * contains useful information + */ + if (!status) + return 0; + if (!amdgpu_sriov_vf(adev)) WREG32_P(hub->vm_l2_pro_fault_cntl, 1, ~1); -- 2.43.0
