From 9da0f7736763aa0fbf63bb15060c6827135f3f67 Mon Sep 17 00:00:00 2001 From: Hawking Zhang Date: Fri, 21 Jun 2024 11:25:30 +0800 Subject: 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 --- drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c') diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c index 7a1ff298417a..8d7267a013d2 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; } -- cgit