> -----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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