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yaml
---
r: 29006
b: refs/heads/master
c: 55b2355
h: refs/heads/master
v: v3
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Shaohua Li authored and Linus Torvalds committed Jun 23, 2006
1 parent a95f625 commit 8772490
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Showing 5 changed files with 11 additions and 22 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 968808b8956e332e556b1eae9b4f7df77518f53b
refs/heads/master: 55b2355eefc2f160246226d4d69fed431173a4d5
19 changes: 2 additions & 17 deletions trunk/arch/i386/kernel/acpi/sleep.c
Original file line number Diff line number Diff line change
Expand Up @@ -8,30 +8,17 @@
#include <linux/acpi.h>
#include <linux/bootmem.h>
#include <linux/dmi.h>
#include <linux/cpumask.h>

#include <asm/smp.h>
#include <asm/tlbflush.h>

/* address in low memory of the wakeup routine. */
unsigned long acpi_wakeup_address = 0;
unsigned long acpi_video_flags;
extern char wakeup_start, wakeup_end;

extern void zap_low_mappings(void);

extern unsigned long FASTCALL(acpi_copy_wakeup_routine(unsigned long));

static void init_low_mapping(pgd_t * pgd, int pgd_limit)
{
int pgd_ofs = 0;

while ((pgd_ofs < pgd_limit)
&& (pgd_ofs + USER_PTRS_PER_PGD < PTRS_PER_PGD)) {
set_pgd(pgd, *(pgd + USER_PTRS_PER_PGD));
pgd_ofs++, pgd++;
}
flush_tlb_all();
}

/**
* acpi_save_state_mem - save kernel state
*
Expand All @@ -42,7 +29,6 @@ int acpi_save_state_mem(void)
{
if (!acpi_wakeup_address)
return 1;
init_low_mapping(swapper_pg_dir, USER_PTRS_PER_PGD);
memcpy((void *)acpi_wakeup_address, &wakeup_start,
&wakeup_end - &wakeup_start);
acpi_copy_wakeup_routine(acpi_wakeup_address);
Expand All @@ -55,7 +41,6 @@ int acpi_save_state_mem(void)
*/
void acpi_restore_state_mem(void)
{
zap_low_mappings();
}

/**
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2 changes: 1 addition & 1 deletion trunk/arch/i386/kernel/acpi/wakeup.S
Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,7 @@ wakeup_code:
1:

# set up page table
movl $swapper_pg_dir-__PAGE_OFFSET, %eax
movl $swsusp_pg_dir-__PAGE_OFFSET, %eax
movl %eax, %cr3

testl $1, real_efer_save_restore - wakeup_code
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3 changes: 2 additions & 1 deletion trunk/arch/i386/mm/init.c
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
#include <linux/efi.h>
#include <linux/memory_hotplug.h>
#include <linux/initrd.h>
#include <linux/cpumask.h>

#include <asm/processor.h>
#include <asm/system.h>
Expand Down Expand Up @@ -384,7 +385,7 @@ static void __init pagetable_init (void)
#endif
}

#ifdef CONFIG_SOFTWARE_SUSPEND
#if defined(CONFIG_SOFTWARE_SUSPEND) || defined(CONFIG_ACPI_SLEEP)
/*
* Swap suspend & friends need this for resume because things like the intel-agp
* driver might have split up a kernel 4MB mapping.
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7 changes: 5 additions & 2 deletions trunk/arch/x86_64/kernel/acpi/sleep.c
Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,8 @@
#include <linux/pci.h>
#include <linux/bootmem.h>
#include <linux/acpi.h>
#include <linux/cpumask.h>

#include <asm/mpspec.h>
#include <asm/io.h>
#include <asm/apic.h>
Expand Down Expand Up @@ -66,7 +68,8 @@ static void init_low_mapping(void)
pgd_t *slot0 = pgd_offset(current->mm, 0UL);
low_ptr = *slot0;
set_pgd(slot0, *pgd_offset(current->mm, PAGE_OFFSET));
flush_tlb_all();
WARN_ON(num_online_cpus() != 1);
local_flush_tlb();
}

/**
Expand All @@ -92,7 +95,7 @@ int acpi_save_state_mem(void)
void acpi_restore_state_mem(void)
{
set_pgd(pgd_offset(current->mm, 0UL), low_ptr);
flush_tlb_all();
local_flush_tlb();
}

/**
Expand Down

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