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Date:   Mon, 10 Sep 2018 17:58:25 +0200
From:   Olaf Hering <olaf@aepfle.de>
To:     Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc:     xen-devel@lists.xenproject.org, Juergen Gross <jgross@suse.com>,
        open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v4] xen: avoid crash in disable_hotplug_cpu
Message-ID: <20180910175825.683476d9.olaf@aepfle.de>
In-Reply-To: <4f623671-e1aa-1804-449c-a26b0c4b9ce9@oracle.com>
References: <20180907143135.29608-1-olaf@aepfle.de>
        <4f623671-e1aa-1804-449c-a26b0c4b9ce9@oracle.com>
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Am Fri, 7 Sep 2018 12:56:37 -0400
schrieb Boris Ostrovsky <boris.ostrovsky@oracle.com>:

> I was hoping you'd respond to my question about warning.
>=20
> root@haswell> xl vcpu-set 3 0 =20
> and in the guest
>=20
> [root@vm-0238 ~]# [=C2=A0=C2=A0 32.866955] ------------[ cut here ]------=
------
> [=C2=A0=C2=A0 32.866963] spinlock on CPU0 exists on IRQ1!
> [=C2=A0=C2=A0 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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