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Diffstat (limited to 'arch/x86/kernel/acpi/sleep.c')
-rw-r--r--arch/x86/kernel/acpi/sleep.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index afc25ee9964b..36af01f029ed 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -50,6 +50,20 @@ int acpi_save_state_mem(void)
50 50
51 header->video_mode = saved_video_mode; 51 header->video_mode = saved_video_mode;
52 52
53 header->wakeup_jmp_seg = acpi_wakeup_address >> 4;
54 /* GDT[0]: GDT self-pointer */
55 header->wakeup_gdt[0] =
56 (u64)(sizeof(header->wakeup_gdt) - 1) +
57 ((u64)(acpi_wakeup_address +
58 ((char *)&header->wakeup_gdt - (char *)acpi_realmode))
59 << 16);
60 /* GDT[1]: real-mode-like code segment */
61 header->wakeup_gdt[1] = (0x009bULL << 40) +
62 ((u64)acpi_wakeup_address << 16) + 0xffff;
63 /* GDT[2]: real-mode-like data segment */
64 header->wakeup_gdt[2] = (0x0093ULL << 40) +
65 ((u64)acpi_wakeup_address << 16) + 0xffff;
66
53#ifndef CONFIG_64BIT 67#ifndef CONFIG_64BIT
54 store_gdt((struct desc_ptr *)&header->pmode_gdt); 68 store_gdt((struct desc_ptr *)&header->pmode_gdt);
55 69
@@ -111,7 +125,7 @@ void __init acpi_reserve_bootmem(void)
111 return; 125 return;
112 } 126 }
113 127
114 acpi_wakeup_address = acpi_realmode; 128 acpi_wakeup_address = virt_to_phys((void *)acpi_realmode);
115} 129}
116 130
117 131