linux-kernel - Re: [PATCH v4] xen: avoid crash in disable_hotplug

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Message-ID: <20180910175825.683476d9.olaf@aepfle.de>
Date:   Mon, 10 Sep 2018 17:58:25 +0200
From:   Olaf Hering <olaf@...fle.de>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc:     xen-devel@...ts.xenproject.org, Juergen Gross <jgross@...e.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4] xen: avoid crash in disable_hotplug_cpu

Am Fri, 7 Sep 2018 12:56:37 -0400
schrieb Boris Ostrovsky <boris.ostrovsky@...cle.com>:

> I was hoping you'd respond to my question about warning.
> 
> root@...well> xl vcpu-set 3 0  
> and in the guest
> 
> [root@...0238 ~]# [   32.866955] ------------[ cut here ]------------
> [   32.866963] spinlock on CPU0 exists on IRQ1!
> [   32.866984] WARNING: CPU: 0 PID: 14 at arch/x86/xen/spinlock.c:90
> xen_init_lock_cpu+0xbf/0xd0

This happens to work for me, on X5550. Please send your .config.

Olaf

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