This is a note to let you know that I've just added the patch titled
x86, microcode: Fix accessing dis_ucode_ldr on 32-bit
to the 3.17-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-microcode-fix-accessing-dis_ucode_ldr-on-32-bit.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 85be07c32496dc264661308e4d9d4e9ccaff8072 Mon Sep 17 00:00:00 2001
From: Borislav Petkov <bp@xxxxxxx>
Date: Wed, 5 Nov 2014 17:28:06 +0100
Subject: x86, microcode: Fix accessing dis_ucode_ldr on 32-bit
From: Borislav Petkov <bp@xxxxxxx>
commit 85be07c32496dc264661308e4d9d4e9ccaff8072 upstream.
We should be accessing it through a pointer, like on the BSP.
Tested-by: Richard Hendershot <rshendershot@xxxxxxxxx>
Fixes: 65cef1311d5d ("x86, microcode: Add a disable chicken bit")
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/microcode/core_early.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/cpu/microcode/core_early.c
+++ b/arch/x86/kernel/cpu/microcode/core_early.c
@@ -124,7 +124,7 @@ void __init load_ucode_bsp(void)
static bool check_loader_disabled_ap(void)
{
#ifdef CONFIG_X86_32
- return __pa_nodebug(dis_ucode_ldr);
+ return *((bool *)__pa_nodebug(&dis_ucode_ldr));
#else
return dis_ucode_ldr;
#endif
Patches currently in stable-queue which might be from bp@xxxxxxx are
queue-3.17/x86-microcode-amd-fix-ucode-patch-stashing-on-32-bit.patch
queue-3.17/x86-microcode-fix-accessing-dis_ucode_ldr-on-32-bit.patch
queue-3.17/x86-microcode-amd-fix-early-ucode-loading-on-32-bit.patch
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