linux-kernel - Re: [PATCH 0/2] ensure alignment on CPU page for bo mapping

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Date:   Tue, 30 Mar 2021 18:21:11 +0200
From:   Christian König <christian.koenig@....com>
To:     Xℹ Ruoyao <xry111@...gyan1223.wang>,
        amd-gfx@...ts.freedesktop.org
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Huacai Chen <chenhuacai@...nel.org>,
        Dan Horák <dan@...ny.cz>,
        Alex Deucher <alexander.deucher@....com>,
        David Airlie <airlied@...ux.ie>
Subject: Re: [PATCH 0/2] ensure alignment on CPU page for bo mapping

Reviewed-by: Christian König <christian.koenig@....com> for the entire 
series.

Alex will probably pick them up for the next feature pull request.

Regards,
Christian.

Am 30.03.21 um 17:33 schrieb Xℹ Ruoyao:
> In AMDGPU driver, the bo mapping should always align to CPU page or
> the page table is corrupted.
>
> The first patch is cherry-picked from Loongson community, which sets a
> suitable dev_info.gart_page_size so Mesa will handle the alignment
> correctly.
>
> The second patch is added to ensure an ioctl with unaligned parameter to
> be rejected -EINVAL, instead of causing page table corruption.
>
> The patches should be applied for drm-next.
>
> Huacai Chen (1):
>    drm/amdgpu: Set a suitable dev_info.gart_page_size
>
> Xℹ Ruoyao (1):
>    drm/amdgpu: check alignment on CPU page for bo map
>
>   drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 4 ++--
>   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c  | 8 ++++----
>   2 files changed, 6 insertions(+), 6 deletions(-)
>
>
> base-commit: a0c8b193bfe81cc8e9c7c162bb8d777ba12596f0