Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1425326 > unrolled thread
| Started by | Catalin Marinas <catalin.marinas@arm.com> |
|---|---|
| First post | 2016-06-17 19:10 +0200 |
| Last post | 2016-06-17 19:10 +0200 |
| Articles | 1 — 1 participant |
Back to article view | Back to linux.kernel
This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by
below is the oldest one visible, not the original post.
Re: [PATCH] arm64: Implement optimised IP checksum helpers Catalin Marinas <catalin.marinas@arm.com> - 2016-06-17 19:10 +0200
| From | Catalin Marinas <catalin.marinas@arm.com> |
|---|---|
| Date | 2016-06-17 19:10 +0200 |
| Subject | Re: [PATCH] arm64: Implement optimised IP checksum helpers |
| Message-ID | <rL5rj-ST-1@gated-at.bofh.it> |
On Thu, May 12, 2016 at 03:26:48PM +0100, Robin Murphy wrote: > AArch64 is capable of 128-bit memory accesses without alignment > restrictions, which makes it both possible and highly practical to slurp > up a typical 20-byte IP header in just 2 loads. Implement our own > version of ip_fast_checksum() to take advantage of that, resulting in > considerably fewer instructions and memory accesses than the generic > version. We can also get more optimal code generation for csum_fold() by > defining it a slightly different way round from the generic version, so > throw that into the mix too. > > Suggested-by: Luke Starrett <luke.starrett@broadcom.com> > Signed-off-by: Robin Murphy <robin.murphy@arm.com> Queued for 4.8. Thanks. -- Catalin
Back to top | Article view | linux.kernel
csiph-web