xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86: Save registers in saved_context during suspend and hibernation

Browse Source 
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>
This commit is contained in:
Rafael J. Wysocki
2007-10-23 22:37:24 +02:00
committed by Thomas Gleixner
parent ef685298b4
commit 0de80bcc2b
5 changed files with 125 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

101
arch/x86/kernel/acpi/wakeup_64.S
View File

@@ -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