From: Avi Kivity <avi@redhat.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
jeremy@goop.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Subject: Re: [PATCH 0/4] Remove interrupt stack table usage from x86_64 kernel (v2)
Date: Sat, 27 Dec 2008 23:42:26 +0200 [thread overview]
Message-ID: <4956A142.6010207@redhat.com> (raw)
In-Reply-To: <20081226143836.GA3610@elte.hu>
Ingo Molnar wrote:
> * Ingo Molnar <mingo@elte.hu> wrote:
>
>
>> They have the following commit IDs, and they are also in tip/master:
>>
>> 921e521: x86: move NMI back to interrupt stack
>> 36ef6c9: x86: make interrupt stack switching atomic
>> dd64891: x86: consolidate irq stack switching to a single macro
>> 955a368: x86: drop the use of the tss interrupt stack table (IST)
>>
>> I also started testing them in tip-qa.
>>
>
> testing failed quickly, the attached config crashes. I've pushed out the
> bad kernel to the tip/tmp.master.bad branch:
>
> fe3aac9: Merge branch 'x86/irq'
>
> (no crashlog available - all i know that the box crashed and rebooted,
> when booted with the bzImage built out of the attached config.)
>
I managed to reproduce this (after several hundred million interrupts
and several dozen million NMIs - do you run anything special on your tests?)
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
prev parent reply other threads:[~2008-12-27 21:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-26 14:22 [PATCH 0/4] Remove interrupt stack table usage from x86_64 kernel (v2) Avi Kivity
2008-12-26 14:22 ` [PATCH 1/4] x86: drop the use of the tss interrupt stack table (IST) Avi Kivity
2008-12-26 14:22 ` [PATCH 2/4] x86: Consolidate irq stack switching to a single macro Avi Kivity
2008-12-26 14:22 ` [PATCH 3/4] x86: Make interrupt stack switching atomic Avi Kivity
2008-12-26 14:22 ` [PATCH 4/4] x86: Move NMI back to interrupt stack Avi Kivity
2008-12-26 14:35 ` [PATCH 0/4] Remove interrupt stack table usage from x86_64 kernel (v2) Ingo Molnar
2008-12-26 14:38 ` Ingo Molnar
2008-12-27 21:42 ` Avi Kivity [this message]
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