Maybe we can check if iommu is enabled in the driver and do the appropriate thing with respect to gfxoff, assuming this is not platform specific.
Alex ________________________________ From: Huang, Ray <[email protected]> Sent: Thursday, August 8, 2019 4:14 AM To: Michel Dänzer <[email protected]>; Kai-Heng Feng <[email protected]>; Olsak, Marek <[email protected]> Cc: Zhou, David(ChunMing) <[email protected]>; LKML <[email protected]>; [email protected] <[email protected]>; Anthony Wong <[email protected]>; amd-gfx list <[email protected]>; Deucher, Alexander <[email protected]>; Koenig, Christian <[email protected]> Subject: RE: [Regression] "drm/amdgpu: enable gfxoff again on raven series (v2)" > -----Original Message----- > From: Michel Dänzer <[email protected]> > Sent: Thursday, August 08, 2019 4:10 PM > To: Huang, Ray <[email protected]>; Kai-Heng Feng > <[email protected]> > Cc: Zhou, David(ChunMing) <[email protected]>; LKML <linux- > [email protected]>; [email protected]; Anthony Wong > <[email protected]>; amd-gfx list <amd- > [email protected]>; Deucher, Alexander > <[email protected]>; Koenig, Christian > <[email protected]> > Subject: Re: [Regression] "drm/amdgpu: enable gfxoff again on raven series > (v2)" > > On 2019-08-08 8:29 a.m., Huang, Ray wrote: > >> From: Kai-Heng Feng <[email protected]> at 00:03, Huang, > >> Ray <[email protected]> wrote: > >> > >>> May I know the all firmware version in your system? > > > > Seems to the issue we encountered with IOMMU enabled. Could you > please disable iommu in SBIOS or GRUB? > > The driver needs to work with the IOMMU enabled. If nothing else, ROCm > only works with IOMMU I think. > Yes. ROCm in APU required IOMMU v2. So far, I am asking Kai-Heng to do some tests to make sure the issue that was encountered by us before. (+ Marek) Thanks, Ray > > -- > Earthling Michel Dänzer | https://www.amd.com > Libre software enthusiast | Mesa and X developer
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