This is a note to let you know that I've just added the patch titled
x86, efi: Don't use (U)EFI time services on 32 bit
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-efi-don-t-use-u-efi-time-services-on-32-bit.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 04bf9ba720fcc4fa313fa122b799ae0989b6cd50 Mon Sep 17 00:00:00 2001
From: Matthew Garrett <matthew.garrett@xxxxxxxxxx>
Date: Fri, 29 Nov 2013 14:44:43 -0500
Subject: x86, efi: Don't use (U)EFI time services on 32 bit
From: Matthew Garrett <matthew.garrett@xxxxxxxxxx>
commit 04bf9ba720fcc4fa313fa122b799ae0989b6cd50 upstream.
UEFI time services are often broken once we're in virtual mode. We were
already refusing to use them on 64-bit systems, but it turns out that
they're also broken on some 32-bit firmware, including the Dell Venue.
Disable them for now, we can revisit once we have the 1:1 mappings code
incorporated.
Signed-off-by: Matthew Garrett <matthew.garrett@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1385754283-2464-1-git-send-email-matthew.garrett@xxxxxxxxxx
Cc: Matt Fleming <matt.fleming@xxxxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/platform/efi/efi.c | 7 -------
1 file changed, 7 deletions(-)
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -744,13 +744,6 @@ void __init efi_init(void)
set_bit(EFI_MEMMAP, &x86_efi_facility);
-#ifdef CONFIG_X86_32
- if (efi_is_native()) {
- x86_platform.get_wallclock = efi_get_time;
- x86_platform.set_wallclock = efi_set_rtc_mmss;
- }
-#endif
-
#if EFI_DEBUG
print_efi_memmap();
#endif
Patches currently in stable-queue which might be from matthew.garrett@xxxxxxxxxx are
queue-3.4/x86-efi-don-t-use-u-efi-time-services-on-32-bit.patch
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