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SubjectRe: [PATCH] x86_64: ia32_signal.c: use macro instead of immediate
H. Peter Anvin wrote:
> Hiroshi Shimamoto wrote:
>> From: Hiroshi Shimamoto <>
>> Make and use macro FIX_EFLAGS, instead of immediate value 0x40DD5 in
>> ia32_restore_sigcontext().
>> +
>> +#ifdef CONFIG_X86_32
>> +# define FIX_EFLAGS (__FIX_EFLAGS | X86_EFLAGS_RF)
>> +#else
>> +# define FIX_EFLAGS __FIX_EFLAGS
>> +#endif
>> +
> Where did this come from? First of all, this is in a 64-bit-only file,
> so CONFIG_X86_32 will never be set; second of all, it seems a bit fishy
> that these should be different.

It came from arch/x86/kernel/signal_64.c. (And signal_32.c has the same one.)
And yes, CONFIG_X86_32 is not set, I compiled and compare the results,
the macro was replaced by 0x40dd5, no RF.
I guess, someone made it same on signal_32.c and signal_64.c.

Hiroshi Shimamoto

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