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| author | Grant Likely <grant.likely@secretlab.ca> | 2011-07-15 20:11:34 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-07-15 20:11:34 -0600 |
| commit | 8c11642a50555e584774737f7c296f9aece310cf (patch) | |
| tree | 1ff8dfaf05479593ef2c50378a68dfc6aec495a5 /arch/x86/kernel/acpi/realmode/wakeup.S | |
| parent | 5d10302f46df1d9a85c34ea97f9b6c29e414482e (diff) | |
| parent | 620917de59eeb934b9f8cf35cc2d95c1ac8ed0fc (diff) | |
| download | blackbird-obmc-linux-8c11642a50555e584774737f7c296f9aece310cf.tar.gz blackbird-obmc-linux-8c11642a50555e584774737f7c296f9aece310cf.zip | |
Merge commit 'v3.0-rc7' into devicetree/next
Diffstat (limited to 'arch/x86/kernel/acpi/realmode/wakeup.S')
| -rw-r--r-- | arch/x86/kernel/acpi/realmode/wakeup.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/realmode/wakeup.S b/arch/x86/kernel/acpi/realmode/wakeup.S index ead21b663117..b4fd836e4053 100644 --- a/arch/x86/kernel/acpi/realmode/wakeup.S +++ b/arch/x86/kernel/acpi/realmode/wakeup.S @@ -28,6 +28,8 @@ pmode_cr3: .long 0 /* Saved %cr3 */ pmode_cr4: .long 0 /* Saved %cr4 */ pmode_efer: .quad 0 /* Saved EFER */ pmode_gdt: .quad 0 +pmode_misc_en: .quad 0 /* Saved MISC_ENABLE MSR */ +pmode_behavior: .long 0 /* Wakeup behavior flags */ realmode_flags: .long 0 real_magic: .long 0 trampoline_segment: .word 0 @@ -91,6 +93,18 @@ wakeup_code: /* Call the C code */ calll main + /* Restore MISC_ENABLE before entering protected mode, in case + BIOS decided to clear XD_DISABLE during S3. */ + movl pmode_behavior, %eax + btl $WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE, %eax + jnc 1f + + movl pmode_misc_en, %eax + movl pmode_misc_en + 4, %edx + movl $MSR_IA32_MISC_ENABLE, %ecx + wrmsr +1: + /* Do any other stuff... */ #ifndef CONFIG_64BIT |
