From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: "Ouyang Zhaowei (Charles)" <ouyangzhaowei@huawei.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>,
Dingweiping <weiping.ding@huawei.com>,
yanqiangjun@huawei.com, huanglinglong@huawei.com
Subject: Re: Redhat 6 VM crash on Xen when cpu number reaches 64
Date: Thu, 26 Mar 2015 14:14:39 +0100 [thread overview]
Message-ID: <87vbhnq4sg.fsf@vitty.brq.redhat.com> (raw)
In-Reply-To: <5513AD6E.1010606@huawei.com> (Ouyang Zhaowei's message of "Thu, 26 Mar 2015 14:55:42 +0800")
"Ouyang Zhaowei (Charles)" <ouyangzhaowei@huawei.com> writes:
> Hi all:
>
> Now a days, we tested Redhat 6.2(6.4) on Xen(version 4.1.2).
> If we config the cpu number more than 32, it'll show 32 in
> the VM, and if we config it 64 cpus, the VM will crash and
> the log is list below.
>
> Can someone tell us why is this happening?
Old RHEL6 kernels don't have support for VCPU info placement for PVHVM
(VCPUOP_register_vcpu_info call) so only 32 VCPUs are supported. This is
fixed in current 6.6.z kernel.
>
> thanks
>
> ===============================crash log=================================
> CPU: CPU feature rdtscp disabled on xen guest
> CPU: CPU feature constant_tsc disabled on xen guest
> mce: CPU supports 0 MCE banks
> #32
> CPU32: Stuck ??
> #33
> CPU33: Stuck ??
...
--
Vitaly
next prev parent reply other threads:[~2015-03-26 13:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-26 6:55 Redhat 6 VM crash on Xen when cpu number reaches 64 Ouyang Zhaowei (Charles)
2015-03-26 13:14 ` Vitaly Kuznetsov [this message]
-- strict thread matches above, loose matches on Subject: below --
2015-08-14 9:13 Ouyangzhaowei (Charles)
2015-08-14 12:17 ` Vitaly Kuznetsov
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