linux-kernel - Re: [PATCH 1/2] drm/msm: Fix address space size after refactor.

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Date:   Mon, 22 Jun 2020 10:25:54 -0600
From:   Jordan Crouse <jcrouse@...eaurora.org>
To:     Rob Clark <robdclark@...il.com>
Cc:     Eric Anholt <eric@...olt.net>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        Sean Paul <sean@...rly.run>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] drm/msm: Fix address space size after refactor.

On Wed, Jun 17, 2020 at 07:39:08PM -0700, Rob Clark wrote:
> On Wed, Jun 17, 2020 at 1:53 PM Eric Anholt <eric@...olt.net> wrote:
> >
> > Previously the address space went from 16M to ~0u, but with the
> > refactor one of the 'f's was dropped, limiting us to 256MB.
> > Additionally, the new interface takes a start and size, not start and
> > end, so we can't just copy and paste.
> >
> > Fixes regressions in dEQP-VK.memory.allocation.random.*
> >
> > Fixes: ccac7ce373c1 ("drm/msm: Refactor address space initialization")
> > Signed-off-by: Eric Anholt <eric@...olt.net>
> 
> 
> rebased on https://patchwork.freedesktop.org/series/78281/ (which
> fixed half of the problem) and pushed this and 2/2 to msm-next so it
> should show up in linux-next shortly..
> 
> planning to wait a short time more to see if we find any other issues
> and then send a -fixes PR

I'll fix up the rest of the flubbed addresses sizes.

Jordan

> BR,
> -R
> 
> 
> > ---
> >  drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> > index 89673c7ed473..5db06b590943 100644
> > --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> > +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> > @@ -194,7 +194,7 @@ adreno_iommu_create_address_space(struct msm_gpu *gpu,
> >         struct msm_gem_address_space *aspace;
> >
> >         aspace = msm_gem_address_space_create(mmu, "gpu", SZ_16M,
> > -               0xfffffff);
> > +               0xffffffff - SZ_16M);
> >
> >         if (IS_ERR(aspace) && !IS_ERR(mmu))
> >                 mmu->funcs->destroy(mmu);
> > --
> > 2.26.2
> >

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