lkml.org 
[lkml]   [2024]   [Feb]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] drm/msm: Wire up tlb ops
On Wed, Feb 14, 2024 at 11:34 PM Johan Hovold <johan@kernel.org> wrote:
>
> On Tue, Feb 13, 2024 at 09:23:40AM -0800, Rob Clark wrote:
> > From: Rob Clark <robdclark@chromium.org>
> >
> > The brute force iommu_flush_iotlb_all() was good enough for unmap, but
> > in some cases a map operation could require removing a table pte entry
> > to replace with a block entry. This also requires tlb invalidation.
> > Missing this was resulting an obscure iova fault on what should be a
> > valid buffer address.
> >
> > Thanks to Robin Murphy for helping me understand the cause of the fault.
> >
> > Cc: Robin Murphy <robin.murphy@arm.com>
> > Fixes: b145c6e65eb0 ("drm/msm: Add support to create a local pagetable")
>
> Sounds like you're missing a
>
> Cc: stable@vger.kernel.org
>
> here? Or is there some reason not to backport this fix (to 5.9 and later
> kernels)?

No reason, I just expected the Fixes tag was sufficient

BR,
-R

> > Signed-off-by: Rob Clark <robdclark@chromium.org>
>
> Johan

\
 
 \ /
  Last update: 2024-05-27 15:05    [W:1.989 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site