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authorIngo Molnar <mingo@elte.hu>2008-09-24 12:31:34 +0400
committerIngo Molnar <mingo@elte.hu>2008-09-24 12:31:34 +0400
commite6aa0f07cb5e81a7cbeaf3be6e2101234c2f0d30 (patch)
tree77926550ac0c31b1423bcf193a4ed0ecb7fda2c1 /arch/x86/power/hibernate_asm_32.S
parentd4738792fb86600b6cb7220459d9c47e819b3580 (diff)
parent72d31053f62c4bc464c2783974926969614a8649 (diff)
downloadlinux-e6aa0f07cb5e81a7cbeaf3be6e2101234c2f0d30.tar.xz
Merge commit 'v2.6.27-rc7' into x86/microcode
Diffstat (limited to 'arch/x86/power/hibernate_asm_32.S')
-rw-r--r--arch/x86/power/hibernate_asm_32.S26
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/x86/power/hibernate_asm_32.S b/arch/x86/power/hibernate_asm_32.S
index b95aa6cfe3cb..4fc7e872c85e 100644
--- a/arch/x86/power/hibernate_asm_32.S
+++ b/arch/x86/power/hibernate_asm_32.S
@@ -28,9 +28,9 @@ ENTRY(swsusp_arch_suspend)
ret
ENTRY(restore_image)
- movl resume_pg_dir, %ecx
- subl $__PAGE_OFFSET, %ecx
- movl %ecx, %cr3
+ movl resume_pg_dir, %eax
+ subl $__PAGE_OFFSET, %eax
+ movl %eax, %cr3
movl restore_pblist, %edx
.p2align 4,,7
@@ -52,17 +52,21 @@ copy_loop:
done:
/* go back to the original page tables */
- movl $swapper_pg_dir, %ecx
- subl $__PAGE_OFFSET, %ecx
- movl %ecx, %cr3
+ movl $swapper_pg_dir, %eax
+ subl $__PAGE_OFFSET, %eax
+ movl %eax, %cr3
/* Flush TLB, including "global" things (vmalloc) */
- movl mmu_cr4_features, %eax
- movl %eax, %edx
+ movl mmu_cr4_features, %ecx
+ jecxz 1f # cr4 Pentium and higher, skip if zero
+ movl %ecx, %edx
andl $~(1<<7), %edx; # PGE
movl %edx, %cr4; # turn off PGE
- movl %cr3, %ecx; # flush TLB
- movl %ecx, %cr3
- movl %eax, %cr4; # turn PGE back on
+1:
+ movl %cr3, %eax; # flush TLB
+ movl %eax, %cr3
+ jecxz 1f # cr4 Pentium and higher, skip if zero
+ movl %ecx, %cr4; # turn PGE back on
+1:
movl saved_context_esp, %esp
movl saved_context_ebp, %ebp