Linus Torvalds c5fe5d8068 x86: Replace assembly access_ok() with a C variant ... It turns out that the assembly variant doesn't actually produce that good code, presumably partly because it creates a long dependency chain with no scheduling, and partly because we cannot get a flags result out of gcc (which could be fixed with asm goto, but it turns out not to be worth it.) The C code allows gcc to schedule and generate multiple (easily predictable) branches, and as a side benefit we can really optimize the case where the size is constant. Link: http://lkml.kernel.org/r/CA%2B55aFzPBdbfKovMT8Edr4SmE2_=%2BOKJFac9XW2awegogTkVTA@mail.gmail.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2013-12-27 16:58:17 -08:00
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asm	x86: Replace assembly access_ok() with a C variant	2013-12-27 16:58:17 -08:00
uapi/asm	Here are the 3.13 KVM changes. There was a lot of work on the PPC	2013-11-15 13:51:36 +09:00