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Commit 0f8d2b92 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

x86: clean up cpu capabilities accesses 



introduce test_cpu_cap() for raw access to the real CPU
capabilities as they are present in x86_capability.

(cpu_has() will shortcut certain tests during build-time)

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent d32de19c

include/asm-x86/cpufeature.h

+5 −1
Original line number Diff line number Diff line
@@ -120,6 +120,9 @@ 
extern const char * const x86_cap_flags[NCAPINTS*32];

extern const char * const x86_power_flags[32];



#define test_cpu_cap(c, bit)						\

	 test_bit(bit, (unsigned long *)((c)->x86_capability))



#define cpu_has(c, bit)							\

	(__builtin_constant_p(bit) &&					\

	 ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) ||	\
@@ -131,7 +134,8 @@ extern const char * const x86_power_flags[32]; 
	   (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) ||	\

	   (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) )	\

	  ? 1 :								\

	 test_bit(bit, (unsigned long *)((c)->x86_capability)))

	 test_cpu_cap(c, bit))



#define boot_cpu_has(bit)	cpu_has(&boot_cpu_data, bit)



#define set_cpu_cap(c, bit)	set_bit(bit, (unsigned long *)((c)->x86_capability))