[AMD Official Use Only - AMD Internal Distribution Only] > -----Original Message----- > From: Kuehling, Felix <[email protected]> > Sent: Tuesday, June 4, 2024 2:25 PM > To: Armin Wolf <[email protected]>; Deucher, Alexander > <[email protected]>; Koenig, Christian > <[email protected]>; Pan, Xinhui <[email protected]>; > [email protected]; [email protected] > Cc: [email protected]; [email protected]; Zhang, Yifan > <[email protected]>; Liang, Prike <[email protected]>; dri- > [email protected]; [email protected] > Subject: Re: [PATCH] Revert "drm/amdgpu: init iommu after amdkfd device > init" > > > On 2024-06-03 18:19, Armin Wolf wrote: > > Am 23.05.24 um 19:30 schrieb Armin Wolf: > > > >> This reverts commit 56b522f4668167096a50c39446d6263c96219f5f. > >> > >> A user reported that this commit breaks the integrated gpu of his > >> notebook, causing a black screen. He was able to bisect the > >> problematic commit and verified that by reverting it the notebook works > again. > >> He also confirmed that kernel 6.8.1 also works on his device, so the > >> upstream commit itself seems to be ok. > >> > >> An amdgpu developer (Alex Deucher) confirmed that this patch should > >> have never been ported to 5.15 in the first place, so revert this > >> commit from the 5.15 stable series. > > > > Hi, > > > > what is the status of this? > > Which branch is this for? This patch won't apply to anything after Linux 6.5.
It's applicable to 5.15 stable only. The original patch caused a regression on 5.15 so probably should not have been applied there. Alex > Support for IOMMUv2 was removed from amdgpu in Linux 6.6 by: > > commit c99a2e7ae291e5b19b60443eb6397320ef9e8571 > Author: Alex Deucher <[email protected]> > Date: Fri Jul 28 12:20:12 2023 -0400 > > drm/amdkfd: drop IOMMUv2 support > > Now that we use the dGPU path for all APUs, drop the > IOMMUv2 support. > > v2: drop the now unused queue manager functions for gfx7/8 APUs > > Reviewed-by: Felix Kuehling <[email protected]> > Acked-by: Christian König <[email protected]> > Tested-by: Mike Lothian <[email protected]> > Signed-off-by: Alex Deucher <[email protected]> > > Regards, > Felix > > > > > > Armin Wolf > > > >> > >> Reported-by: Barry Kauler <[email protected]> > >> Signed-off-by: Armin Wolf <[email protected]> > >> --- > >> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 8 ++++---- > >> 1 file changed, 4 insertions(+), 4 deletions(-) > >> > >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > >> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > >> index 222a1d9ecf16..5f6c32ec674d 100644 > >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > >> @@ -2487,6 +2487,10 @@ static int amdgpu_device_ip_init(struct > >> amdgpu_device *adev) > >> if (r) > >> goto init_failed; > >> > >> + r = amdgpu_amdkfd_resume_iommu(adev); > >> + if (r) > >> + goto init_failed; > >> + > >> r = amdgpu_device_ip_hw_init_phase1(adev); > >> if (r) > >> goto init_failed; > >> @@ -2525,10 +2529,6 @@ static int amdgpu_device_ip_init(struct > >> amdgpu_device *adev) > >> if (!adev->gmc.xgmi.pending_reset) > >> amdgpu_amdkfd_device_init(adev); > >> > >> - r = amdgpu_amdkfd_resume_iommu(adev); > >> - if (r) > >> - goto init_failed; > >> - > >> amdgpu_fru_get_product_info(adev); > >> > >> init_failed: > >> -- > >> 2.39.2 > >> > >>
