From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Robert Richter <robert.richter@amd.com>,
ying.huang@intel.com, Andi Kleen <andi@firstfloor.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 6/9] x86: only call smp_processor_id in non-preempt cases
Date: Wed, 1 Dec 2010 21:07:24 +0300 [thread overview]
Message-ID: <20101201180724.GA6478@lenovo> (raw)
In-Reply-To: <1291156050-4482-7-git-send-email-dzickus@redhat.com>
On Tue, Nov 30, 2010 at 05:27:27PM -0500, Don Zickus wrote:
> There are some paths that walk the die_chain with preemption on.
> Make sure we are in an NMI call before we start doing anything.
>
> This was triggered by do_general_protection calling notify_die with
> DIE_GPF.
>
> Reported-by: Jan Kiszka <jan.kiszka@web.de>
> Signed-off-by: Don Zickus <dzickus@redhat.com>
> ---
> arch/x86/kernel/apic/hw_nmi.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
yup, thanks Don!
Cyrill
next prev parent reply other threads:[~2010-12-01 18:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-30 22:27 [V3 PATCH 0/9] x86, NMI: give NMI handler a face-lift Don Zickus
2010-11-30 22:27 ` [PATCH 1/9] x86, NMI: Add NMI symbol constants and rename memory parity to PCI SERR Don Zickus
2010-11-30 22:27 ` [PATCH 2/9] x86, NMI: Add touch_nmi_watchdog to io_check_error delay Don Zickus
2010-11-30 22:27 ` [PATCH 3/9] x86, NMI: Rewrite NMI handler Don Zickus
2010-11-30 22:27 ` [PATCH 4/9] x86, NMI: Remove DIE_NMI_IPI and add priorties to handlers Don Zickus
2010-12-01 18:41 ` Cyrill Gorcunov
2010-12-01 18:53 ` Peter Zijlstra
2010-12-01 19:01 ` Cyrill Gorcunov
2010-12-01 21:30 ` Andi Kleen
2010-12-01 21:35 ` Cyrill Gorcunov
2010-11-30 22:27 ` [PATCH 5/9] x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU Don Zickus
2010-11-30 22:27 ` [PATCH 6/9] x86: only call smp_processor_id in non-preempt cases Don Zickus
2010-12-01 18:07 ` Cyrill Gorcunov [this message]
2010-11-30 22:27 ` [PATCH 7/9] x86: Avoid calling arch_trigger_all_cpu_backtrace() at the same time Don Zickus
2010-11-30 22:27 ` [PATCH 8/9] panic: ratelimit panic messages Don Zickus
2010-11-30 22:27 ` [PATCH 9/9] watchdog: touch_nmi_watchdog should only touch local cpu not every one Don Zickus
2010-12-22 3:16 ` [V3 PATCH 0/9] x86, NMI: give NMI handler a face-lift Huang Ying
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