From: Peter Zijlstra <peterz@infradead.org>
To: Stefan Bader <stefan.bader@canonical.com>
Cc: Borislav Petkov <bp@alien8.de>,
Paolo Bonzini <pbonzini@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
kvm@vger.kernel.org, Marcelo Tosatti <mtosatti@redhat.com>,
MASAO TAKAHASHI <masao-takahashi@kanno.co.jp>,
Joerg Roedel <joro@8bytes.org>
Subject: Re: Another preempt folding issue?
Date: Wed, 12 Feb 2014 12:54:12 +0100 [thread overview]
Message-ID: <20140212115412.GW27965@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <52FB5669.7090506@canonical.com>
On Wed, Feb 12, 2014 at 12:09:29PM +0100, Stefan Bader wrote:
> Something else here I run a kernel with CONFIG_PREEMPT not set and NR_CPUS
> limited to 8 (for the 32bit kernel). So the default apic driver is used. Since
> default_send_IPI_mask_logical is only used from there, I assume the trace you
> got does the same. Maybe something there is wrong which would explain why we
> only see it on 32bit hosts.
Can you try with a different APIC driver to test this?
next prev parent reply other threads:[~2014-02-12 11:54 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-11 18:34 Another preempt folding issue? Stefan Bader
2014-02-11 19:45 ` Peter Zijlstra
2014-02-12 8:20 ` Stefan Bader
2014-02-12 10:37 ` Peter Zijlstra
2014-02-12 10:40 ` Borislav Petkov
2014-02-12 11:09 ` Stefan Bader
2014-02-12 11:54 ` Peter Zijlstra [this message]
2014-02-13 17:00 ` Stefan Bader
2014-02-13 17:38 ` Peter Zijlstra
2014-02-13 18:03 ` Stefan Bader
2014-02-13 18:26 ` Peter Zijlstra
2014-02-14 13:34 ` Borislav Petkov
2014-02-14 13:40 ` Stefan Bader
2014-02-14 14:24 ` Stefan Bader
2014-02-14 14:47 ` Borislav Petkov
2014-02-14 17:02 ` Stefan Bader
2014-02-14 17:21 ` Peter Zijlstra
2014-02-20 15:38 ` Stefan Bader
2014-02-20 15:50 ` Peter Zijlstra
2014-03-24 17:39 ` Paolo Bonzini
2014-03-25 8:23 ` Stefan Bader
2014-02-14 17:33 ` Borislav Petkov
2014-02-14 18:23 ` Stefan Bader
2014-02-14 19:03 ` Stefan Bader
2014-02-14 15:21 ` Another preempt folding issue? (maybe bisect) Borislav Petkov
2014-02-14 15:28 ` Stefan Bader
2014-02-14 15:44 ` Borislav Petkov
2014-02-14 16:21 ` Peter Zijlstra
2014-02-13 18:25 ` Another preempt folding issue? Peter Zijlstra
2014-02-14 10:55 ` Stefan Bader
2014-02-14 13:17 ` Peter Zijlstra
2014-02-14 11:24 ` Stefan Bader
2014-02-14 11:49 ` Peter Zijlstra
2014-02-12 11:12 ` Joerg Roedel
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