linux-kernel - Patch "efi: fix 32bit kernel boot failed problem using efi" has been added to the 3.10-stable tree

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Date:	Sat, 08 Aug 2015 15:05:18 -0700
From:	<gregkh@...uxfoundation.org>
To:	fupan.li@...driver.com, ben@...adent.org.uk, fupanli@...il.com,
	gregkh@...uxfoundation.org, jslaby@...e.cz,
	linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
	matt.fleming@...el.com, matt@...eblueprint.co.uk,
	stable@...r.kernel.org
Cc:	<stable@...r.kernel.org>, <stable-commits@...r.kernel.org>
Subject: Patch "efi: fix 32bit kernel boot failed problem using efi" has been added to the 3.10-stable tree


This is a note to let you know that I've just added the patch titled

    efi: fix 32bit kernel boot failed problem using efi

to the 3.10-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:
     efi-fix-32bit-kernel-boot-failed-problem-using-efi.patch
and it can be found in the queue-3.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@...r.kernel.org> know about it.


>From fupan.li@...driver.com  Sat Aug  8 15:03:02 2015
From: <fupan.li@...driver.com>
Date: Tue, 4 Aug 2015 09:51:21 +0800
Subject: efi: fix 32bit kernel boot failed problem using efi
To: <gregkh@...uxfoundation.org>, <matt@...eblueprint.co.uk>
Cc: <jslaby@...e.cz>, <linux-efi@...r.kernel.org>, <stable@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <fupanli@...il.com>, <ben@...adent.org.uk>
Message-ID: <1438653081-25746-1-git-send-email-fupan.li@...driver.com>

From: Fupan Li <fupan.li@...driver.com>

Commit 35d5134b7d5a
("x86/efi: Correct EFI boot stub use of code32_start")
imported a bug, which will cause 32bit kernel boot failed
using efi method. It should use the label's address instead
of the value stored in the label to caculate the address of
code32_start.

Signed-off-by: Fupan Li <fupan.li@...driver.com>
Reviewed-by: Matt Fleming <matt.fleming@...el.com>
---
 arch/x86/boot/compressed/head_32.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -54,7 +54,7 @@ ENTRY(efi_pe_entry)
 	call	reloc
 reloc:
 	popl	%ecx
-	subl	reloc, %ecx
+	subl	$reloc, %ecx
 	movl	%ecx, BP_code32_start(%eax)
 
 	sub	$0x4, %esp


Patches currently in stable-queue which might be from fupan.li@...driver.com are

queue-3.10/efi-fix-32bit-kernel-boot-failed-problem-using-efi.patch
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