schedule(): use XSAVE/XRSTOR and swap floating point registers in context switch

2015-08-07 08:41:00 +09:00
parent d5c243571f
commit aa191b87d3
3 changed files with 61 additions and 14 deletions
--- a/arch/x86/kernel/include/registers.h
+++ b/arch/x86/kernel/include/registers.h
@ -58,6 +58,7 @@
 #define MSR_IA32_ENERGY_PERF_BIAS	0x000001b0
 #define MSR_NHM_TURBO_RATIO_LIMIT	0x000001ad
 #define MSR_IA32_CR_PAT			0x00000277
+#define MSR_IA32_XSS			0xda0


 #define CVAL(event, mask) \