diff options
Diffstat (limited to 'arch/x86/power/hibernate_asm_32.S')
| -rw-r--r-- | arch/x86/power/hibernate_asm_32.S | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/arch/x86/power/hibernate_asm_32.S b/arch/x86/power/hibernate_asm_32.S index 4fc7e872c85..1d0fa0e2407 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": * @@ -10,28 +8,36 @@ #include <linux/linkage.h> #include <asm/segment.h> -#include <asm/page.h> +#include <asm/page_types.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 ENTRY(restore_image) + movl mmu_cr4_features, %ecx movl resume_pg_dir, %eax subl $__PAGE_OFFSET, %eax movl %eax, %cr3 + jecxz 1f # cr4 Pentium and higher, skip if zero + andl $~(X86_CR4_PGE), %ecx + movl %ecx, %cr4; # turn off PGE + movl %cr3, %eax; # flush TLB + movl %eax, %cr3 +1: movl restore_pblist, %edx .p2align 4,,7 @@ -55,16 +61,8 @@ done: movl $swapper_pg_dir, %eax subl $__PAGE_OFFSET, %eax movl %eax, %cr3 - /* Flush TLB, including "global" things (vmalloc) */ 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 -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: @@ -74,7 +72,12 @@ done: movl saved_context_esi, %esi movl saved_context_edi, %edi - pushl saved_context_eflags ; popfl + pushl saved_context_eflags + popfl + + /* Saved in save_processor_state. */ + movl $saved_context, %eax + lgdt saved_context_gdt_desc(%eax) xorl %eax, %eax |