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| author | Jason Gunthorpe <jgg@mellanox.com> | 2018-12-11 14:24:57 -0700 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-12-11 14:24:57 -0700 |
| commit | 28ab1bb0e8f031dd7dd3462ff8f6b2e93fc77e7f (patch) | |
| tree | 3c0d2177d9bfc513c2d06c1efb5ab62c74fd1953 /arch/arm64/include/asm/processor.h | |
| parent | b874155a5fa450bf5e4b5303cbfff05958805bf8 (diff) | |
| parent | 40e020c129cfc991e8ab4736d2665351ffd1468d (diff) | |
Merge tag 'v4.20-rc6' into rdma.git for-next
For dependencies in following patches.
Diffstat (limited to 'arch/arm64/include/asm/processor.h')
| -rw-r--r-- | arch/arm64/include/asm/processor.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 3e2091708b8e..6b0d4dff5012 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -24,6 +24,14 @@ #define KERNEL_DS UL(-1) #define USER_DS (TASK_SIZE_64 - 1) +/* + * On arm64 systems, unaligned accesses by the CPU are cheap, and so there is + * no point in shifting all network buffers by 2 bytes just to make some IP + * header fields appear aligned in memory, potentially sacrificing some DMA + * performance on some platforms. + */ +#define NET_IP_ALIGN 0 + #ifndef __ASSEMBLY__ #ifdef __KERNEL__ |