From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Ingo Molnar <mingo@elte.hu>, Yinghai Lu <yhlu.kernel@gmail.com>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH] x86: do_boot_cpu - add check if we have ESR register
Date: Mon, 22 Sep 2008 13:36:03 +0400 [thread overview]
Message-ID: <20080922093603.GC7663@localhost> (raw)
We should touch ESR register if only we have one.
Check its presence first.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
CC: Yinghai Lu <yhlu.kernel@gmail.com>
---
Index: linux-2.6.git/arch/x86/kernel/smpboot.c
===================================================================
--- linux-2.6.git.orig/arch/x86/kernel/smpboot.c 2008-09-18 19:17:16.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/smpboot.c 2008-09-22 13:30:36.000000000 +0400
@@ -893,8 +893,10 @@ 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:[~2008-09-22 9:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-22 9:36 Cyrill Gorcunov [this message]
2008-09-22 9:51 ` [PATCH] x86: do_boot_cpu - add check if we have ESR register Cyrill Gorcunov
2008-09-22 9:57 ` Yinghai Lu
2008-09-22 10:00 ` Ingo Molnar
2008-09-22 10:04 ` Cyrill Gorcunov
2008-09-22 10:15 ` Cyrill Gorcunov
2008-09-22 18:37 ` Yinghai Lu
2008-09-22 19:21 ` Cyrill Gorcunov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080922093603.GC7663@localhost \
--to=gorcunov@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=macro@linux-mips.org \
--cc=mingo@elte.hu \
--cc=yhlu.kernel@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox