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x86/fpu: Simplify print_xstate_features() 

We do a boot time printout of xfeatures in print_xstate_features(),
simplify this code to make use of the recently introduced cpu_has_xfeature()
method.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-04-28 09:17:26 +02:00
parent 5b07343034
commit 33588b5222
1 changed files with 12 additions and 13 deletions
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25
arch/x86/kernel/fpu/xstate.c
View File

@ -545,13 +545,12 @@ static void __init setup_xstate_features(void)
} while (1);
}
static void print_xstate_feature(u64 xstate_mask, const char *desc)
static void print_xstate_feature(u64 xstate_mask)
{
if (xfeatures_mask & xstate_mask) {
int xstate_feature = fls64(xstate_mask)-1;
const char *feature_name;
pr_info("x86/fpu: Supporting XSAVE feature %2d: '%s'\n", xstate_feature, desc);
}
if (cpu_has_xfeatures(xstate_mask, &feature_name))
pr_info("x86/fpu: Supporting XSAVE feature 0x%02Lx: '%s'\n", xstate_mask, feature_name);
}
/*
@ -559,14 +558,14 @@ static void print_xstate_feature(u64 xstate_mask, const char *desc)
*/
static void print_xstate_features(void)
{
print_xstate_feature(XSTATE_FP, "x87 floating point registers");
print_xstate_feature(XSTATE_SSE, "SSE registers");
print_xstate_feature(XSTATE_YMM, "AVX registers");
print_xstate_feature(XSTATE_BNDREGS, "MPX bounds registers");
print_xstate_feature(XSTATE_BNDCSR, "MPX CSR");
print_xstate_feature(XSTATE_OPMASK, "AVX-512 opmask");
print_xstate_feature(XSTATE_ZMM_Hi256, "AVX-512 Hi256");
print_xstate_feature(XSTATE_Hi16_ZMM, "AVX-512 ZMM_Hi256");
print_xstate_feature(XSTATE_FP);
print_xstate_feature(XSTATE_SSE);
print_xstate_feature(XSTATE_YMM);
print_xstate_feature(XSTATE_BNDREGS);
print_xstate_feature(XSTATE_BNDCSR);
print_xstate_feature(XSTATE_OPMASK);
print_xstate_feature(XSTATE_ZMM_Hi256);
print_xstate_feature(XSTATE_Hi16_ZMM);
}
/*