lkml.org 
[lkml]   [2008]   [Oct]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH -tip] x86: do_boot_cpu - check if we have ESR register
We should touch ESR register if only we have it.
The patch fixes the problem mentoined here

http://lkml.org/lkml/2008/10/17/147

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
CC: Glauber Costa <glommer@gmail.com>
---

arch/x86/kernel/smpboot.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

Index: linux-2.6.git/arch/x86/kernel/smpboot.c
===================================================================
--- linux-2.6.git.orig/arch/x86/kernel/smpboot.c 2008-10-21 20:35:27.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/smpboot.c 2008-10-22 17:45:28.000000000 +0400
@@ -894,8 +894,10 @@ do_rest:
/*
* Be paranoid about clearing APIC errors.
*/
- apic_write(APIC_ESR, 0);
- apic_read(APIC_ESR);
+ if (APIC_INTEGRATED(apic_version[phys_apicid])) {
+ apic_write(APIC_ESR, 0);
+ apic_read(APIC_ESR);
+ }
}

/*

\
 
 \ /
  Last update: 2008-10-22 16:03    [W:0.075 / U:11.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site