Messages in this thread | | | Date | Fri, 15 May 2015 12:48:57 +0200 | From | Thierry Reding <> | Subject | Re: [PATCH] drm/ttm: dma: Don't crash on memory in the vmalloc range |
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On Fri, May 15, 2015 at 04:09:54PM +0900, Alexandre Courbot wrote: > dma_alloc_coherent() can return memory in the vmalloc range. > virt_to_page() cannot handle such addresses and crashes. This > patch detects such cases and obtains the struct page * using > vmalloc_to_page() instead. > > Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> > --- > This patch is a follow-up of the following discussion: > > https://www.marc.info/?l=dri-devel&m=141579595431254&w=3 > > It works for me on both 32-bit and 64-bit Tegra, so I am not convinced > that Thierry's initial change from virt_to_page() to phys_to_page() is > still required - Thierry, can you confirm whether your patch is still > relevant after this one?
If this works for you on both 32-bit and 64-bit Tegra I don't think the earlier patch is still relevant and this looks indeed like a much more appropriate solution.
Thierry [unhandled content-type:application/pgp-signature] | |