Messages in this thread | | | From | Rob Clark <> | Date | Thu, 15 Feb 2024 07:28:53 -0800 | Subject | Re: [PATCH] drm/msm: Wire up tlb ops |
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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
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