linux-kernel - Re: [Xen-devel] Testing preemptibility test in xen_setup_cpu

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Message-ID: <54984255.8030702@citrix.com>
Date:	Mon, 22 Dec 2014 16:09:57 +0000
From:	David Vrabel <david.vrabel@...rix.com>
To:	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	xen-devel <xen-devel@...ts.xenproject.org>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	David Vrabel <david.vrabel@...rix.com>
Subject: Re: [Xen-devel] Testing preemptibility test in xen_setup_cpu_clockevents()

On 22/12/14 15:53, Boris Ostrovsky wrote:
> With 250a1ac685f (x86, smpboot: Remove pointless preempt_disable() in
> native_smp_prepare_cpus()) HVM guests no longer boot since we are
> hitting BUG_ON(preemptible()) in xen_setup_cpu_clockevents().
> 
> I don't think we need this test (PV or HVM), do we?

It looks safe to remove the BUG_ON().

David
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