diff options
author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-10-24 00:37:24 +0400 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-24 00:37:24 +0400 |
commit | 0de80bcc2baed116a569c38cbc38c5dcb945d14d (patch) | |
tree | 5eef7beda7307be2e8949f1bf0e7f84799d8ae31 /arch | |
parent | ef685298b4b3dead1efa1d47cd27ced0f2673254 (diff) | |
download | linux-0de80bcc2baed116a569c38cbc38c5dcb945d14d.tar.xz |
x86: Save registers in saved_context during suspend and hibernation
During hibernation and suspend on x86_64 save CPU registers in the saved_context
structure rather than in a handful of separate variables.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/acpi/wakeup_64.S | 101 | ||||
-rw-r--r-- | arch/x86/kernel/asm-offsets_64.c | 28 | ||||
-rw-r--r-- | arch/x86/kernel/suspend_64.c | 6 | ||||
-rw-r--r-- | arch/x86/kernel/suspend_asm_64.S | 72 |
4 files changed, 118 insertions, 89 deletions
diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S index 55608ec2ed72..5ed3bc5c61d7 100644 --- a/arch/x86/kernel/acpi/wakeup_64.S +++ b/arch/x86/kernel/acpi/wakeup_64.S @@ -4,6 +4,7 @@ #include <asm/pgtable.h> #include <asm/page.h> #include <asm/msr.h> +#include <asm/asm-offsets.h> # Copyright 2003 Pavel Machek <pavel@suse.cz>, distribute under GPLv2 # @@ -342,31 +343,32 @@ do_suspend_lowlevel: xorl %eax, %eax call save_processor_state - movq %rsp, saved_context_esp(%rip) - movq %rax, saved_context_eax(%rip) - movq %rbx, saved_context_ebx(%rip) - movq %rcx, saved_context_ecx(%rip) - movq %rdx, saved_context_edx(%rip) - movq %rbp, saved_context_ebp(%rip) - movq %rsi, saved_context_esi(%rip) - movq %rdi, saved_context_edi(%rip) - movq %r8, saved_context_r08(%rip) - movq %r9, saved_context_r09(%rip) - movq %r10, saved_context_r10(%rip) - movq %r11, saved_context_r11(%rip) - movq %r12, saved_context_r12(%rip) - movq %r13, saved_context_r13(%rip) - movq %r14, saved_context_r14(%rip) - movq %r15, saved_context_r15(%rip) - pushfq ; popq saved_context_eflags(%rip) + movq $saved_context, %rax + movq %rsp, pt_regs_rsp(%rax) + movq %rbp, pt_regs_rbp(%rax) + movq %rsi, pt_regs_rsi(%rax) + movq %rdi, pt_regs_rdi(%rax) + movq %rbx, pt_regs_rbx(%rax) + movq %rcx, pt_regs_rcx(%rax) + movq %rdx, pt_regs_rdx(%rax) + movq %r8, pt_regs_r8(%rax) + movq %r9, pt_regs_r9(%rax) + movq %r10, pt_regs_r10(%rax) + movq %r11, pt_regs_r11(%rax) + movq %r12, pt_regs_r12(%rax) + movq %r13, pt_regs_r13(%rax) + movq %r14, pt_regs_r14(%rax) + movq %r15, pt_regs_r15(%rax) + pushfq + popq pt_regs_eflags(%rax) movq $.L97, saved_rip(%rip) - movq %rsp,saved_rsp - movq %rbp,saved_rbp - movq %rbx,saved_rbx - movq %rdi,saved_rdi - movq %rsi,saved_rsi + movq %rsp, saved_rsp + movq %rbp, saved_rbp + movq %rbx, saved_rbx + movq %rdi, saved_rdi + movq %rsi, saved_rsi addq $8, %rsp movl $3, %edi @@ -377,32 +379,35 @@ do_suspend_lowlevel: .L99: .align 4 movl $24, %eax - movw %ax, %ds - movq saved_context+58(%rip), %rax - movq %rax, %cr4 - movq saved_context+50(%rip), %rax - movq %rax, %cr3 - movq saved_context+42(%rip), %rax - movq %rax, %cr2 - movq saved_context+34(%rip), %rax - movq %rax, %cr0 - pushq saved_context_eflags(%rip) ; popfq - movq saved_context_esp(%rip), %rsp - movq saved_context_ebp(%rip), %rbp - movq saved_context_eax(%rip), %rax - movq saved_context_ebx(%rip), %rbx - movq saved_context_ecx(%rip), %rcx - movq saved_context_edx(%rip), %rdx - movq saved_context_esi(%rip), %rsi - movq saved_context_edi(%rip), %rdi - movq saved_context_r08(%rip), %r8 - movq saved_context_r09(%rip), %r9 - movq saved_context_r10(%rip), %r10 - movq saved_context_r11(%rip), %r11 - movq saved_context_r12(%rip), %r12 - movq saved_context_r13(%rip), %r13 - movq saved_context_r14(%rip), %r14 - movq saved_context_r15(%rip), %r15 + movw %ax, %ds + + /* We don't restore %rax, it must be 0 anyway */ + movq $saved_context, %rax + movq saved_context_cr4(%rax), %rbx + movq %rbx, %cr4 + movq saved_context_cr3(%rax), %rbx + movq %rbx, %cr3 + movq saved_context_cr2(%rax), %rbx + movq %rbx, %cr2 + movq saved_context_cr0(%rax), %rbx + movq %rbx, %cr0 + pushq pt_regs_eflags(%rax) + popfq + movq pt_regs_rsp(%rax), %rsp + movq pt_regs_rbp(%rax), %rbp + movq pt_regs_rsi(%rax), %rsi + movq pt_regs_rdi(%rax), %rdi + movq pt_regs_rbx(%rax), %rbx + movq pt_regs_rcx(%rax), %rcx + movq pt_regs_rdx(%rax), %rdx + movq pt_regs_r8(%rax), %r8 + movq pt_regs_r9(%rax), %r9 + movq pt_regs_r10(%rax), %r10 + movq pt_regs_r11(%rax), %r11 + movq pt_regs_r12(%rax), %r12 + movq pt_regs_r13(%rax), %r13 + movq pt_regs_r14(%rax), %r14 + movq pt_regs_r15(%rax), %r15 xorl %eax, %eax addq $8, %rsp diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c index 778953bc636c..7e50bda565b4 100644 --- a/arch/x86/kernel/asm-offsets_64.c +++ b/arch/x86/kernel/asm-offsets_64.c @@ -76,6 +76,34 @@ int main(void) DEFINE(pbe_orig_address, offsetof(struct pbe, orig_address)); DEFINE(pbe_next, offsetof(struct pbe, next)); BLANK(); +#define ENTRY(entry) DEFINE(pt_regs_ ## entry, offsetof(struct pt_regs, entry)) + ENTRY(rbx); + ENTRY(rbx); + ENTRY(rcx); + ENTRY(rdx); + ENTRY(rsp); + ENTRY(rbp); + ENTRY(rsi); + ENTRY(rdi); + ENTRY(r8); + ENTRY(r9); + ENTRY(r10); + ENTRY(r11); + ENTRY(r12); + ENTRY(r13); + ENTRY(r14); + ENTRY(r15); + ENTRY(eflags); + BLANK(); +#undef ENTRY +#define ENTRY(entry) DEFINE(saved_context_ ## entry, offsetof(struct saved_context, entry)) + ENTRY(cr0); + ENTRY(cr2); + ENTRY(cr3); + ENTRY(cr4); + ENTRY(cr8); + BLANK(); +#undef ENTRY DEFINE(TSS_ist, offsetof(struct tss_struct, ist)); BLANK(); DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx)); diff --git a/arch/x86/kernel/suspend_64.c b/arch/x86/kernel/suspend_64.c index bc9f59c246fd..db284ef44d53 100644 --- a/arch/x86/kernel/suspend_64.c +++ b/arch/x86/kernel/suspend_64.c @@ -19,12 +19,6 @@ extern const void __nosave_begin, __nosave_end; struct saved_context saved_context; -unsigned long saved_context_eax, saved_context_ebx, saved_context_ecx, saved_context_edx; -unsigned long saved_context_esp, saved_context_ebp, saved_context_esi, saved_context_edi; -unsigned long saved_context_r08, saved_context_r09, saved_context_r10, saved_context_r11; -unsigned long saved_context_r12, saved_context_r13, saved_context_r14, saved_context_r15; -unsigned long saved_context_eflags; - void __save_processor_state(struct saved_context *ctxt) { kernel_fpu_begin(); diff --git a/arch/x86/kernel/suspend_asm_64.S b/arch/x86/kernel/suspend_asm_64.S index 48344b666d2c..72f952103e50 100644 --- a/arch/x86/kernel/suspend_asm_64.S +++ b/arch/x86/kernel/suspend_asm_64.S @@ -17,24 +17,24 @@ #include <asm/asm-offsets.h> ENTRY(swsusp_arch_suspend) - - movq %rsp, saved_context_esp(%rip) - movq %rax, saved_context_eax(%rip) - movq %rbx, saved_context_ebx(%rip) - movq %rcx, saved_context_ecx(%rip) - movq %rdx, saved_context_edx(%rip) - movq %rbp, saved_context_ebp(%rip) - movq %rsi, saved_context_esi(%rip) - movq %rdi, saved_context_edi(%rip) - movq %r8, saved_context_r08(%rip) - movq %r9, saved_context_r09(%rip) - movq %r10, saved_context_r10(%rip) - movq %r11, saved_context_r11(%rip) - movq %r12, saved_context_r12(%rip) - movq %r13, saved_context_r13(%rip) - movq %r14, saved_context_r14(%rip) - movq %r15, saved_context_r15(%rip) - pushfq ; popq saved_context_eflags(%rip) + movq $saved_context, %rax + movq %rsp, pt_regs_rsp(%rax) + movq %rbp, pt_regs_rbp(%rax) + movq %rsi, pt_regs_rsi(%rax) + movq %rdi, pt_regs_rdi(%rax) + movq %rbx, pt_regs_rbx(%rax) + movq %rcx, pt_regs_rcx(%rax) + movq %rdx, pt_regs_rdx(%rax) + movq %r8, pt_regs_r8(%rax) + movq %r9, pt_regs_r9(%rax) + movq %r10, pt_regs_r10(%rax) + movq %r11, pt_regs_r11(%rax) + movq %r12, pt_regs_r12(%rax) + movq %r13, pt_regs_r13(%rax) + movq %r14, pt_regs_r14(%rax) + movq %r15, pt_regs_r15(%rax) + pushfq + popq pt_regs_eflags(%rax) /* save the address of restore_registers */ movq $restore_registers, %rax @@ -113,23 +113,25 @@ ENTRY(restore_registers) movq %rcx, %cr3 movq %rax, %cr4; # turn PGE back on - movq saved_context_esp(%rip), %rsp - movq saved_context_ebp(%rip), %rbp - /* restore GPRs (we don't restore %rax, it must be 0 anyway) */ - movq saved_context_ebx(%rip), %rbx - movq saved_context_ecx(%rip), %rcx - movq saved_context_edx(%rip), %rdx - movq saved_context_esi(%rip), %rsi - movq saved_context_edi(%rip), %rdi - movq saved_context_r08(%rip), %r8 - movq saved_context_r09(%rip), %r9 - movq saved_context_r10(%rip), %r10 - movq saved_context_r11(%rip), %r11 - movq saved_context_r12(%rip), %r12 - movq saved_context_r13(%rip), %r13 - movq saved_context_r14(%rip), %r14 - movq saved_context_r15(%rip), %r15 - pushq saved_context_eflags(%rip) ; popfq + /* We don't restore %rax, it must be 0 anyway */ + movq $saved_context, %rax + movq pt_regs_rsp(%rax), %rsp + movq pt_regs_rbp(%rax), %rbp + movq pt_regs_rsi(%rax), %rsi + movq pt_regs_rdi(%rax), %rdi + movq pt_regs_rbx(%rax), %rbx + movq pt_regs_rcx(%rax), %rcx + movq pt_regs_rdx(%rax), %rdx + movq pt_regs_r8(%rax), %r8 + movq pt_regs_r9(%rax), %r9 + movq pt_regs_r10(%rax), %r10 + movq pt_regs_r11(%rax), %r11 + movq pt_regs_r12(%rax), %r12 + movq pt_regs_r13(%rax), %r13 + movq pt_regs_r14(%rax), %r14 + movq pt_regs_r15(%rax), %r15 + pushq pt_regs_eflags(%rax) + popfq xorq %rax, %rax |