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Diffstat (limited to 'arch/x86/power')
-rw-r--r--arch/x86/power/cpu_32.c7
-rw-r--r--arch/x86/power/cpu_64.c7
-rw-r--r--arch/x86/power/hibernate_asm_32.S14
3 files changed, 21 insertions, 7 deletions
diff --git a/arch/x86/power/cpu_32.c b/arch/x86/power/cpu_32.c
index d3e083dea720..274d06082f48 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 66bdfb591fd8..e3b6cf70d62c 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();
diff --git a/arch/x86/power/hibernate_asm_32.S b/arch/x86/power/hibernate_asm_32.S
index 4fc7e872c85e..d1e9b53f9d33 100644
--- a/arch/x86/power/hibernate_asm_32.S
+++ b/arch/x86/power/hibernate_asm_32.S
@@ -1,5 +1,3 @@
-.text
-
/*
* This may not use any stack, nor any variable that is not "NoSave":
*
@@ -12,17 +10,18 @@
#include <asm/segment.h>
#include <asm/page.h>
#include <asm/asm-offsets.h>
+#include <asm/processor-flags.h>
- .text
+.text
ENTRY(swsusp_arch_suspend)
-
movl %esp, saved_context_esp
movl %ebx, saved_context_ebx
movl %ebp, saved_context_ebp
movl %esi, saved_context_esi
movl %edi, saved_context_edi
- pushfl ; popl saved_context_eflags
+ pushfl
+ popl saved_context_eflags
call swsusp_save
ret
@@ -59,7 +58,7 @@ done:
movl mmu_cr4_features, %ecx
jecxz 1f # cr4 Pentium and higher, skip if zero
movl %ecx, %edx
- andl $~(1<<7), %edx; # PGE
+ andl $~(X86_CR4_PGE), %edx
movl %edx, %cr4; # turn off PGE
1:
movl %cr3, %eax; # flush TLB
@@ -74,7 +73,8 @@ done:
movl saved_context_esi, %esi
movl saved_context_edi, %edi
- pushl saved_context_eflags ; popfl
+ pushl saved_context_eflags
+ popfl
xorl %eax, %eax