lkml.org 
[lkml]   [2018]   [Jun]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Date
Subject[PATCH 3.16 003/410] x86, microcode: Fix accessing dis_ucode_ldr on 32-bit
3.16.57-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Borislav Petkov <bp@suse.de>

commit 85be07c32496dc264661308e4d9d4e9ccaff8072 upstream.

We should be accessing it through a pointer, like on the BSP.

Tested-by: Richard Hendershot <rshendershot@mchsi.com>
Fixes: 65cef1311d5d ("x86, microcode: Add a disable chicken bit")
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
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
\
 
 \ /
  Last update: 2018-06-07 18:15    [W:0.837 / U:1.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site