diff options
| author | Pavel Machek | 2005-06-25 14:55:14 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2005-06-25 16:24:33 -0700 |
| commit | 8d783b3e02002bce8cf9d4e4a82922ee7e59b1e5 (patch) | |
| tree | 75c95b03d715caa1f5971b5c2182635618bdba0c /arch/i386/power | |
| parent | c61978b30322c83a94d7e4857fa5b9996b7d7931 (diff) | |
[PATCH] swsusp: clean assembly parts
This patch fixes register saving so that each register is only saved once,
and adds missing saving of %cr8 on x86-64. Some reordering so that
save/restore is more logical/safer (segment registers should be restored
after gdt).
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/power')
| -rw-r--r-- | arch/i386/power/cpu.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/arch/i386/power/cpu.c b/arch/i386/power/cpu.c index d099d01461f4..0e6b45b61251 100644 --- a/arch/i386/power/cpu.c +++ b/arch/i386/power/cpu.c @@ -44,7 +44,6 @@ void __save_processor_state(struct saved_context *ctxt) */ asm volatile ("sgdt %0" : "=m" (ctxt->gdt_limit)); asm volatile ("sidt %0" : "=m" (ctxt->idt_limit)); - asm volatile ("sldt %0" : "=m" (ctxt->ldt)); asm volatile ("str %0" : "=m" (ctxt->tr)); /* @@ -107,7 +106,6 @@ static void fix_processor_context(void) void __restore_processor_state(struct saved_context *ctxt) { - /* * control registers */ @@ -117,6 +115,13 @@ void __restore_processor_state(struct saved_context *ctxt) asm volatile ("movl %0, %%cr0" :: "r" (ctxt->cr0)); /* + * now restore the descriptor tables to their proper values + * ltr is done i fix_processor_context(). + */ + asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); + asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); + + /* * segment registers */ asm volatile ("movw %0, %%es" :: "r" (ctxt->es)); @@ -125,14 +130,6 @@ void __restore_processor_state(struct saved_context *ctxt) asm volatile ("movw %0, %%ss" :: "r" (ctxt->ss)); /* - * now restore the descriptor tables to their proper values - * ltr is done i fix_processor_context(). - */ - asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); - asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); - asm volatile ("lldt %0" :: "m" (ctxt->ldt)); - - /* * sysenter MSRs */ if (boot_cpu_has(X86_FEATURE_SEP)) |