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: Ingo Molnar <mingo@elte.hu>

diff --git a/include/asm-x86/cpufeature.h b/include/asm-x86/cpufeature.h
index 065e929..1e3102e 100644 (file)
--- a/include/asm-x86/cpufeature.h
+++ b/include/asm-x86/cpufeature.h
@@ -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))