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From: David Woodhouse <dwmw2@infradead.org>
To: Juergen Gross <jgross@suse.com>,
	linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org,
	x86@kernel.org
Cc: boris.ostrovsky@oracle.com, hpa@zytor.com, tglx@linutronix.de,
	mingo@redhat.com, bp@alien8.de, Waiman.Long@hp.com,
	peterz@infradead.org
Subject: Re: [PATCH 0/2] xen: fix two issues in Xen pv qspinlock handling
Date: Tue, 09 Oct 2018 15:40:16 +0100	[thread overview]
Message-ID: <762802a4b8ff21e43e59e222e472ab9b23fc43cd.camel@infradead.org> (raw)
In-Reply-To: <20181001071641.19282-1-jgross@suse.com>

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On Mon, 2018-10-01 at 09:16 +0200, Juergen Gross wrote:
> The Xen specific queue spinlock wait function has two issues which
> could result in a hanging system.
> 
> They have a similar root cause of clearing a pending wakeup of a
> waiting vcpu and later going to sleep waiting for the just cleared
> wakeup event, which of course won't ever happen.
> 
> Juergen Gross (2):
>   xen: fix race in xen_qlock_wait()
>   xen: make xen_qlock_wait() nestable
> 
>  arch/x86/xen/spinlock.c | 33 ++++++++++++---------------------
>  1 file changed, 12 insertions(+), 21 deletions(-)
> 
> Cc: Waiman.Long@hp.com
> Cc: peterz@infradead.org

LGTM. Both these should be Cc:stable@vger.kernel.org, yes?

Thanks.

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  parent reply	other threads:[~2018-10-09 14:40 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-01  7:16 Juergen Gross
2018-10-01  7:16 ` [PATCH 1/2] xen: fix race in xen_qlock_wait() Juergen Gross
2018-10-01  7:37   ` Juergen Gross
2018-10-01  8:54   ` [Xen-devel] " Jan Beulich
2018-10-01  7:16 ` [PATCH 2/2] xen: make xen_qlock_wait() nestable Juergen Gross
2018-10-01  7:38   ` Juergen Gross
2018-10-01  8:57   ` [Xen-devel] " Jan Beulich
     [not found]   ` <5BB1E18802000078001ED127@suse.com>
2018-10-01  9:03     ` Juergen Gross
2018-10-01  9:18       ` Jan Beulich
2018-10-10 11:53   ` David Woodhouse
2018-10-10 12:30     ` Thomas Gleixner
2018-10-10 12:44       ` David Woodhouse
2018-10-10 12:47         ` Thomas Gleixner
2018-10-10 13:38           ` Juergen Gross
2018-10-10 13:53             ` David Woodhouse
2018-10-01  7:37 ` [PATCH 0/2] xen: fix two issues in Xen pv qspinlock handling Juergen Gross
2018-10-09 14:40 ` David Woodhouse [this message]
2018-10-09 14:52   ` Juergen Gross

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