| Message ID | 20220610151228.4562-1-will@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | arm64: mm: Fix cache maintenance for non-coherent streaming DMA | expand |
On Fri, 10 Jun 2022 at 17:12, Will Deacon <will@kernel.org> wrote: > > Hi all, > > This pair of patches follows-up on the discussion we had on linux-arch > earlier this week and addresses the reported problem for arm64 only. > > Other architectures should be able to do something similar if they wish, > but this all came out of discussion and code inspection rather than a > concrete failure. > > Cheers, > > Will > > Cc: Ard Biesheuvel <ardb@kernel.org> > Cc: Christoph Hellwig <hch@lst.de> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Robin Murphy <robin.murphy@arm.com> > Cc: Russell King <linux@armlinux.org.uk> > > --->8 > > Will Deacon (2): > arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA > transfer > arm64: mm: Remove assembly DMA cache maintenance wrappers > Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
On Fri, 10 Jun 2022 16:12:26 +0100, Will Deacon wrote: > This pair of patches follows-up on the discussion we had on linux-arch > earlier this week and addresses the reported problem for arm64 only. > > Other architectures should be able to do something similar if they wish, > but this all came out of discussion and code inspection rather than a > concrete failure. > > [...] Applied to arm64 (for-next/fixes), thanks! [1/2] arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer https://git.kernel.org/arm64/c/c50f11c6196f
Hi all, This pair of patches follows-up on the discussion we had on linux-arch earlier this week and addresses the reported problem for arm64 only. Other architectures should be able to do something similar if they wish, but this all came out of discussion and code inspection rather than a concrete failure. Cheers, Will Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> --->8 Will Deacon (2): arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer arm64: mm: Remove assembly DMA cache maintenance wrappers arch/arm64/include/asm/cacheflush.h | 7 ----- arch/arm64/mm/cache.S | 43 ----------------------------- arch/arm64/mm/dma-mapping.c | 19 +++++++++---- 3 files changed, 14 insertions(+), 55 deletions(-)