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-rw-r--r--arch/x86/kernel/xsave.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index 550bf45236f4..2322f586c051 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -360,15 +360,10 @@ unsigned int sig_xstate_size = sizeof(struct _fpstate);
360/* 360/*
361 * Enable the extended processor state save/restore feature 361 * Enable the extended processor state save/restore feature
362 */ 362 */
363static void __cpuinit __xsave_init(void) 363static inline void xstate_enable(u64 mask)
364{ 364{
365 set_in_cr4(X86_CR4_OSXSAVE); 365 set_in_cr4(X86_CR4_OSXSAVE);
366 366 xsetbv(XCR_XFEATURE_ENABLED_MASK, mask);
367 /*
368 * Enable all the features that the HW is capable of
369 * and the Linux kernel is aware of.
370 */
371 xsetbv(XCR_XFEATURE_ENABLED_MASK, pcntxt_mask);
372} 367}
373 368
374/* 369/*
@@ -426,7 +421,7 @@ static void __init setup_xstate_init(void)
426/* 421/*
427 * Enable and initialize the xsave feature. 422 * Enable and initialize the xsave feature.
428 */ 423 */
429static void __cpuinit xsave_cntxt_init(void) 424static void __cpuinit xstate_enable_boot_cpu(void)
430{ 425{
431 unsigned int eax, ebx, ecx, edx; 426 unsigned int eax, ebx, ecx, edx;
432 427
@@ -443,7 +438,8 @@ static void __cpuinit xsave_cntxt_init(void)
443 * Support only the state known to OS. 438 * Support only the state known to OS.
444 */ 439 */
445 pcntxt_mask = pcntxt_mask & XCNTXT_MASK; 440 pcntxt_mask = pcntxt_mask & XCNTXT_MASK;
446 __xsave_init(); 441
442 xstate_enable(pcntxt_mask);
447 443
448 /* 444 /*
449 * Recompute the context size for enabled features 445 * Recompute the context size for enabled features
@@ -470,6 +466,7 @@ void __cpuinit xsave_init(void)
470 * Boot processor to setup the FP and extended state context info. 466 * Boot processor to setup the FP and extended state context info.
471 */ 467 */
472 if (!smp_processor_id()) 468 if (!smp_processor_id())
473 xsave_cntxt_init(); 469 xstate_enable_boot_cpu();
474 __xsave_init(); 470 else
471 xstate_enable(pcntxt_mask);
475} 472}