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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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59e97e4d6f
This save a few bytes on x86-64 and means that future patches can apply alternatives to unrelocated code. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/ff64a6b9a1a3860ca4a7b8b6dc7b4754f9491cd7.1310563276.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
28 lines
388 B
C
28 lines
388 B
C
#ifdef __ASSEMBLY__
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#include <asm/asm.h>
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#ifdef CONFIG_SMP
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.macro LOCK_PREFIX
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1: lock
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.section .smp_locks,"a"
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.balign 4
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.long 1b - .
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.previous
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.endm
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#else
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.macro LOCK_PREFIX
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.endm
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#endif
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.macro altinstruction_entry orig alt feature orig_len alt_len
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.align 8
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.long \orig - .
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.long \alt - .
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.word \feature
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.byte \orig_len
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.byte \alt_len
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.endm
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#endif /* __ASSEMBLY__ */
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