From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Glauber Costa <glommer@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
"Maciej W. Rozycki" <macro@linux-mips.org>
Subject: [PATCH -tip] x86: do_boot_cpu - check if we have ESR register
Date: Wed, 22 Oct 2008 18:00:09 +0400 [thread overview]
Message-ID: <20081022140009.GA9639@localhost> (raw)
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);
+ }
}
/*
next reply other threads:[~2008-10-22 14:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-22 14:00 Cyrill Gorcunov [this message]
2008-10-22 14:13 ` [PATCH -tip] x86: do_boot_cpu - check if we have ESR register Ingo Molnar
2008-10-22 14:17 ` Glauber Costa
2008-10-22 15:42 ` Maciej W. Rozycki
2008-10-22 14:17 ` Cyrill Gorcunov
2008-10-22 14:23 ` Ingo Molnar
2008-10-22 14:52 ` Cyrill Gorcunov
2008-10-22 14:59 ` Ingo Molnar
2008-10-22 15:02 ` Cyrill Gorcunov
2008-10-22 15:04 ` Ingo Molnar
2008-10-22 15:06 ` Cyrill Gorcunov
2008-10-22 15:18 ` Max Kellermann
2008-10-22 15:52 ` Maciej W. Rozycki
2008-10-22 15:41 ` Maciej W. Rozycki
2008-10-22 15:29 ` Maciej W. Rozycki
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