Message-ID: <5342DCF3.7080408@citrix.com>
Date: Mon, 7 Apr 2014 18:14:27 +0100
From: David Vrabel <david.vrabel@citrix.com>
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To: <konrad@kernel.org>
CC: <xen-devel@lists.xenproject.org>, <linux-kernel@vger.kernel.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Steven Rostedt <rostedt@goodmis.org>, <stable@vger.kernel.org>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH] xen/spinlock: Don't enable them unconditionally.
References: <1396637284-6312-1-git-send-email-konrad@kernel.org>
In-Reply-To: <1396637284-6312-1-git-send-email-konrad@kernel.org>
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On 04/04/14 19:48, konrad@kernel.org wrote:
> From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> 
> The git commit a945928ea2709bc0e8e8165d33aed855a0110279
> ('xen: Do not enable spinlocks before jump_label_init() has executed')
> was added to deal with the jump machinery. Earlier the code
> that turned on the jump label was only called by Xen specific
> functions. But now that it had been moved to the initcall machinery
> it gets called on Xen, KVM, and baremetal - ouch!. And the detection
> machinery to only call it on Xen wasn't remembered in the heat
> of merge window excitement.
> 
> This means that the slowpath is enabled on baremetal while it should
> not be.

Applied to devel/for-linus-3.15.

Thanks.

David
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