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authorIngo Molnar <mingo@elte.hu>2008-10-11 20:23:20 +0200
committerIngo Molnar <mingo@elte.hu>2008-10-11 20:23:20 +0200
commit0afe2db21394820d32646a695eccf3fbfe6ab5c7 (patch)
tree6d925383f444a242ebc77d167420efb7e6ad8d99 /arch/x86/power
parentd84705969f898f294bc3fc32eca33580f14105bd (diff)
parent43603c8df97f246e8be7b9cc92a8f968a85108bd (diff)
downloadlinux-0afe2db21394820d32646a695eccf3fbfe6ab5c7.tar.gz
Merge branch 'x86/unify-cpu-detect' into x86-v28-for-linus-phase4-D
Conflicts: arch/x86/kernel/cpu/common.c arch/x86/kernel/signal_64.c include/asm-x86/cpufeature.h
Diffstat (limited to 'arch/x86/power')
-rw-r--r--arch/x86/power/cpu_32.c7
-rw-r--r--arch/x86/power/cpu_64.c7
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/power/cpu_32.c b/arch/x86/power/cpu_32.c
index d3e083dea72..274d06082f4 100644
--- a/arch/x86/power/cpu_32.c
+++ b/arch/x86/power/cpu_32.c
@@ -11,6 +11,7 @@
#include <linux/suspend.h>
#include <asm/mtrr.h>
#include <asm/mce.h>
+#include <asm/xcr.h>
static struct saved_context saved_context;
@@ -126,6 +127,12 @@ static void __restore_processor_state(struct saved_context *ctxt)
if (boot_cpu_has(X86_FEATURE_SEP))
enable_sep_cpu();
+ /*
+ * restore XCR0 for xsave capable cpu's.
+ */
+ if (cpu_has_xsave)
+ xsetbv(XCR_XFEATURE_ENABLED_MASK, pcntxt_mask);
+
fix_processor_context();
do_fpu_end();
mtrr_ap_init();
diff --git a/arch/x86/power/cpu_64.c b/arch/x86/power/cpu_64.c
index 66bdfb591fd..e3b6cf70d62 100644
--- a/arch/x86/power/cpu_64.c
+++ b/arch/x86/power/cpu_64.c
@@ -14,6 +14,7 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/mtrr.h>
+#include <asm/xcr.h>
static void fix_processor_context(void);
@@ -122,6 +123,12 @@ static void __restore_processor_state(struct saved_context *ctxt)
wrmsrl(MSR_GS_BASE, ctxt->gs_base);
wrmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base);
+ /*
+ * restore XCR0 for xsave capable cpu's.
+ */
+ if (cpu_has_xsave)
+ xsetbv(XCR_XFEATURE_ENABLED_MASK, pcntxt_mask);
+
fix_processor_context();
do_fpu_end();