From 5818eae501c57e003de9e4f52a6001827e123a88 Mon Sep 17 00:00:00 2001 From: Yifan Zha Date: Mon, 1 Aug 2022 11:11:20 +0800 Subject: [PATCH] drm/amdgpu: skip "Issue additional private vm invalidation to MMHUB" on SRIOV MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit [Why] vm_l2_bank_select_reserved_cid2 is a PF_only register that cannot be programmed by VF. This feature is only support HDP using GPUVM page tables to access FB memory which should be disabled on SRIOV. [How] Disable the feature on VF. Acked-by: Christian König Signed-off-by: Yifan Zha Signed-off-by: Horace Chen Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c index 497f52283a30..592729cb0f48 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c @@ -234,7 +234,8 @@ static void gmc_v11_0_flush_vm_hub(struct amdgpu_device *adev, uint32_t vmid, /* Issue additional private vm invalidation to MMHUB */ if ((vmhub != AMDGPU_GFXHUB_0) && - (hub->vm_l2_bank_select_reserved_cid2)) { + (hub->vm_l2_bank_select_reserved_cid2) && + !amdgpu_sriov_vf(adev)) { inv_req = RREG32_NO_KIQ(hub->vm_l2_bank_select_reserved_cid2); /* bit 25: RSERVED_CACHE_PRIVATE_INVALIDATION */ inv_req |= (1 << 25); -- 2.11.0