Re: [PATCH 0/3] x86_64,entry: Rearrange the syscall exit optimizations

2014-12-03 Thread Andy Lutomirski
[adding potentially interested people] On Fri, Nov 7, 2014 at 3:58 PM, Andy Lutomirski wrote: > The syscall exit asm is a big mess. There's a really fast path, some > kind of fast path code (with a hard-coded optimization for audit), and > the really slow path. The result is that it's very hard

[PATCH 0/3] x86_64,entry: Rearrange the syscall exit optimizations

2014-11-07 Thread Andy Lutomirski
The syscall exit asm is a big mess. There's a really fast path, some kind of fast path code (with a hard-coded optimization for audit), and the really slow path. The result is that it's very hard to work with this code. There are some asm paths that are much slower than they should be (context t