kernel/git/stable/linux.git/arch/x86/lib/cmpxchg.c, branch master Linux kernel stable tree https://git.rulkc.org/pub/scm/linux/kernel/git/stable/linux.git/atom?h=master 2012-11-29T21:23:01+00:00 x86, 386 removal: Remove CONFIG_CMPXCHG 2012-11-29T21:23:01+00:00 H. Peter Anvin hpa@linux.intel.com 2012-11-28T19:50:24+00:00 urn:sha1:d55c5a93db2d5fa95f233ab153f594365d95b777 All 486+ CPUs support CMPXCHG, so remove the fallback 386 support code. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1354132230-21854-3-git-send-email-hpa@linux.intel.com x86, asm: Merge cmpxchg_486_u64() and cmpxchg8b_emu() 2010-07-29T00:05:11+00:00 H. Peter Anvin hpa@linux.intel.com 2010-07-29T00:05:11+00:00 urn:sha1:a378d9338e8dde78314b3a6ae003de351936c729 We have two functions for doing exactly the same thing -- emulating cmpxchg8b on 486 and older hardware -- with different calling conventions, and yet doing the same thing. Drop the C version and use the assembly version, via alternatives, for both the local and non-local versions of cmpxchg8b. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> LKML-Reference: <AANLkTikAmaDPji-TVDarmG1yD=fwbffcsmEU=YEuP+8r@mail.gmail.com> x86, asm: Move cmpxchg emulation code to arch/x86/lib 2010-07-28T23:53:49+00:00 H. Peter Anvin hpa@linux.intel.com 2010-07-28T23:53:49+00:00 urn:sha1:90c8f92f5c807807ca74d5f2f313794925174e6b Move cmpxchg emulation code from arch/x86/kernel/cpu (which is otherwise CPU identification) to arch/x86/lib, where other emulation code lives already. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> LKML-Reference: <AANLkTikAmaDPji-TVDarmG1yD=fwbffcsmEU=YEuP+8r@mail.gmail.com>