From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Sander Eikelenboom <linux@eikelenboom.it>
Cc: xen-devel@lists.xenproject.org, Wei Liu <wl@xen.org>,
Jan Beulich <jbeulich@suse.com>,
Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: [Xen-devel] [PATCH 0/3] x86: fixes/improvements for scratch cpumask
Date: Wed, 12 Feb 2020 18:01:50 +0100 [thread overview]
Message-ID: <20200212170150.GS4679@Air-de-Roger> (raw)
In-Reply-To: <1d26308a-cbe9-8a6c-a4a9-9211c0b165c5@eikelenboom.it>
On Wed, Feb 12, 2020 at 05:53:39PM +0100, Sander Eikelenboom wrote:
> On 12/02/2020 17:49, Roger Pau Monne wrote:
> > Hello,
> >
> > Commit:
> >
> > 5500d265a2a8fa63d60c08beb549de8ec82ff7a5
> > x86/smp: use APIC ALLBUT destination shorthand when possible
> >
> > Introduced a bogus usage of the scratch cpumask: it was used in a
> > function that could be called from interrupt context, and hence using
> > the scratch cpumask there is not safe. Patch #2 is a fix for that usage.
> >
> > Patch #3 adds some debug infrastructure to make sure the scratch cpumask
> > is used in the right context, and hence should prevent further missuses.
> >
> > Thanks, Roger.
>
> Hi Roger,
>
> Do you still want me to test the "panic" patch ?
> Or test this series instead ?
I've been able to trigger this myself, so if you can give a try to the
series in order to assert it fixes your issue that would be great.
Thanks.
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next prev parent reply other threads:[~2020-02-12 17:02 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 16:49 [Xen-devel] [PATCH 0/3] x86: fixes/improvements for scratch cpumask Roger Pau Monne
2020-02-12 16:49 ` [Xen-devel] [PATCH 1/3] x86/smp: unify header includes in smp.h Roger Pau Monne
2020-02-12 23:05 ` Wei Liu
2020-02-13 9:54 ` Jan Beulich
2020-02-12 16:49 ` [Xen-devel] [PATCH 2/3] x86/smp: use a dedicated scratch cpumask in send_IPI_mask Roger Pau Monne
2020-02-13 9:59 ` Jan Beulich
2020-02-13 10:03 ` Roger Pau Monné
2020-02-13 10:19 ` Jan Beulich
2020-02-13 11:41 ` Roger Pau Monné
2020-02-13 13:35 ` Jan Beulich
2020-02-12 16:49 ` [Xen-devel] [PATCH 3/3] x86: add accessors for scratch cpu mask Roger Pau Monne
2020-02-13 10:12 ` Jan Beulich
2020-02-13 15:15 ` Roger Pau Monné
2020-02-13 15:43 ` Jan Beulich
2020-02-12 16:53 ` [Xen-devel] [PATCH 0/3] x86: fixes/improvements for scratch cpumask Sander Eikelenboom
2020-02-12 17:01 ` Roger Pau Monné [this message]
2020-02-12 17:13 ` Sander Eikelenboom
2020-02-13 9:31 ` Sander Eikelenboom
2020-02-12 21:05 ` Julien Grall
2020-02-13 9:53 ` Jan Beulich
2020-02-13 10:05 ` Roger Pau Monné
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