Messages in this thread | | | Date | Tue, 23 Jun 2020 13:40:53 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH] dma-remap: Align the size in dma_common_*_remap() |
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On Mon, Jun 22, 2020 at 10:23:20PM +0200, Eric Auger wrote: > Running a guest with a virtio-iommu protecting virtio devices > is broken since commit 515e5b6d90d4 ("dma-mapping: use vmap insted > of reimplementing it"). Before the conversion, the size was > page aligned in __get_vm_area_node(). Doing so fixes the > regression. > > Fixes: 515e5b6d90d4 ("dma-mapping: use vmap insted of reimplementing it") > Signed-off-by: Eric Auger <eric.auger@redhat.com> > --- > kernel/dma/remap.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/kernel/dma/remap.c b/kernel/dma/remap.c > index e739a6eea6e7..a3151a9b0c08 100644 > --- a/kernel/dma/remap.c > +++ b/kernel/dma/remap.c > @@ -24,7 +24,7 @@ void *dma_common_pages_remap(struct page **pages, size_t size, > { > void *vaddr; > > - vaddr = vmap(pages, size >> PAGE_SHIFT, VM_DMA_COHERENT, prot); > + vaddr = vmap(pages, PAGE_ALIGN(size) >> PAGE_SHIFT, VM_DMA_COHERENT, prot);
Please respin without going over 80 characters.
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