kernel.git/arch/x86/kernel/cpu/cmpxchg.c, branch linux-2.6.28.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-2.6.28.y2008-08-18T14:05:47Zx86: move cmpxchg fallbacks to a generic place2008-08-18T14:05:47ZThomas Petazzoni2008-08-18T10:33:21Zurn:sha1:774400a3ba23b63f4de39e67ce6c4e48935809dc
arch/x86/kernel/cpu/intel.c defines a few fallback functions
(cmpxchg_*()) that are used when the CPU doesn't support cmpxchg
and/or cmpxchg64 natively. However, while defined in an Intel-specific
file, these functions are also used for CPUs from other vendors when
they don't support cmpxchg and/or cmpxchg64. This breaks the
compilation when support for Intel CPUs is disabled.
This patch moves these functions to a new
arch/x86/kernel/cpu/cmpxchg.c file, unconditionally compiled when
X86_32 is enabled.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: michael@free-electrons.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>