Thank you, Jerry. You can find more detailed discussion in previous thread. â?? Sincerely Yours, Pixel On 07/02/2017, 3:03 PM, "Zhang, Jerry" <Jerry.Zhang at amd.com> wrote: >If that info is enough for vf. >Reviewed-by: Junwei Zhang <Jerry.Zhang at amd.com> > >Regards, >Jerry (Junwei Zhang) > >Linux Base Graphics >SRDC Software Development >_____________________________________ > > >> -----Original Message----- >> From: Pixel Ding [mailto:Pixel.Ding at amd.com] >> Sent: Tuesday, February 07, 2017 14:07 >> To: Zhou, David(ChunMing); Koenig, Christian; Zhang, Jerry >> Cc: amd-gfx at lists.freedesktop.org; Ding, Pixel >> Subject: [PATCH] drm/amdgpu/virt: skip VM fault handler for VF (v2) >> >> VF uses KIQ to access registers. When VM fault occurs, the driver can't get back >> the fence of KIQ submission and runs into CPU soft lockup. >> >> v2: print IV entry info >> >> Signed-off-by: Pixel Ding <Pixel.Ding at amd.com> >> --- >> drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 7 +++++++ >> 1 file changed, 7 insertions(+) >> >> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c >> b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c >> index 7669b32..6502508 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c >> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c >> @@ -1237,6 +1237,13 @@ static int gmc_v8_0_process_interrupt(struct >> amdgpu_device *adev, { >> u32 addr, status, mc_client; >> >> + if (amdgpu_sriov_vf(adev)) { >> + dev_err(adev->dev, "GPU fault detected: %d 0x%08x\n", >> + entry->src_id, entry->src_data); >> + dev_err(adev->dev, " Can't decode VM fault info here on SRIOV >> VF\n"); >> + return 0; >> + } >> + >> addr = RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_ADDR); >> status = RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_STATUS); >> mc_client = >> RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_MCCLIENT); >> -- >> 2.7.4 >
