Re: [git pull] drm for 5.11-rc1

[Alex Deucher]

On Mon, Dec 14, 2020 at 5:21 PM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Thu, Dec 10, 2020 at 7:52 PM Dave Airlie <airlied@xxxxxxxxx> wrote:
> >
> > This is an early pull request for drm for 5.11 merge window. I'm going
> > to be out for most of the first week of the merge window so thought
> > I'd just preempt things and send this early.
>
> Ok, I've merged this, and Dave is likely gone already, but it _looks_
> like there's a problem with the drm tree on my Radeon workstation.
>
> It works fine on my i915 laptop.
>
> The symptoms are that the boot just hangs after
>
>    fb0: switching to amdgpudrmfb from EFI VGA
>
> when on a working kernel the next lines are
>
>   amdgpu 0000:49:00.0: vgaarb: deactivate vga console
>   [drm] initializing kernel modesetting (POLARIS10 0x1002:0x67DF
> 0x1DA2:0xE353 0xE7).
>   amdgpu 0000:49:00.0: amdgpu: Trusted Memory Zone (TMZ) feature not supported
>   [drm] register mmio base: 0xE1C00000
>   [drm] register mmio size: 262144
>
> I'm bisecting for more details, but it might take a while, and I
> thought I'd start the ball rolling with this initial report in case
> somebody goes "Aahh.., we know about that case already, the fix is
> XYZ"...
>

The relevant fixes are:
https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-next-fixes&id=aefec40938e4a0e1214f9121520aba4d51697cd9
https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-next-fixes&id=95e3d610d35c9c5b51e12c5c8ac18061ae08cf97

Alex



>               Linus
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