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x86: Don't use the EFI reboot method by default 

Testing suggests that at least some Lenovos and some Intels will
fail to reboot via EFI, attempting to jump to an unmapped
physical address. In the long run we could handle this by
providing a page table with a 1:1 mapping of physical addresses,
but for now it's probably just easier to assume that ACPI or
legacy methods will be present and reboot via those.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Cox <alan@linux.intel.com>
Link: http://lkml.kernel.org/r/1309985557-15350-1-git-send-email-mjg@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Matthew Garrett 2011-07-06 16:52:37 -04:00 committed by Ingo Molnar
parent 7a3136666b
commit f70e957cda
1 changed files with 0 additions and 3 deletions
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3
arch/x86/platform/efi/efi.c
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@ -504,9 +504,6 @@ void __init efi_init(void)
x86_platform.set_wallclock = efi_set_rtc_mmss;
#endif
/* Setup for EFI runtime service */
reboot_type = BOOT_EFI;
#if EFI_DEBUG
print_efi_memmap();
#endif