From: Junjie Wei <junjie.wei@oracle.com>
To: Keir Fraser <keir@xen.org>
Cc: Jan Beulich <JBeulich@suse.com>, xen-devel@lists.xen.org
Subject: Re: VM save/restore
Date: Mon, 20 Aug 2012 17:05:38 -0400 [thread overview]
Message-ID: <5032A6A2.7070802@oracle.com> (raw)
In-Reply-To: <CC55042A.4992C%keir@xen.org>
On 08/18/2012 03:34 AM, Keir Fraser wrote:
>>>
>>> 1) 32-bit guests can be configured with VCPUs > 32 and started,
>>> but the guest can only make use of 32 of them.
>
> HVM guest? I don't know why this is. You will have to investigate some more
> what has happened to the rest of your VCPUs! I think it should definitely
> work. Cc Jan in case he has any thoughts.
>
It looks like that for 32-bit guests, the VCPU -> CPU mapping only works
for the first 32 VCPUs. It can be reliably reproduced.
Thanks,
Junjie
[root@ovs087 HVM_X86]# rpm -qa | grep xen
xenpvboot-0.1-8.el5
xen-tools-4.1.2-39
xen-devel-4.1.2-39
xen-4.1.2-39
[root@ovs087 HVM_X86]# uname -a
Linux ovs087 2.6.39-200.30.1.el5uek #1 SMP Thu Jul 12 21:47:09 EDT 2012
x86_64 x86_64 x86_64 GNU/Linux
[root@ovs087 HVM_X86]# cat vm.cfg | grep vcpus
vcpus = 36
[root@ovs087 HVM_X86]# xm list 65
Name ID Mem VCPUs State
Time(s)
OVM_OL5U7_X86_PVHVM_10GB 65 2048 32 r-----
33.3
[root@ovs087 HVM_X86]# xm vcpu-list 65
Name ID VCPU CPU State Time(s) CPU
Affinity
OVM_OL5U7_X86_PVHVM_10GB 65 0 4 -b- 10.7 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 1 0 -b- 1.8 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 2 4 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 3 2 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 4 7 -b- 1.1 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 5 5 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 6 0 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 7 3 r-- 10.6 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 8 4 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 9 7 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 10 7 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 11 2 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 12 6 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 13 4 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 14 7 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 15 5 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 16 0 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 17 6 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 18 4 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 19 5 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 20 7 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 21 0 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 22 5 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 23 4 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 24 4 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 25 0 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 26 2 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 27 6 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 28 4 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 29 7 -b- 0.9 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 30 2 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 31 0 -b- 1.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 32 - --p 0.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 33 - --p 0.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 34 - --p 0.0 any cpu
OVM_OL5U7_X86_PVHVM_10GB 65 35 - --p 0.0 any cpu
next prev parent reply other threads:[~2012-08-20 21:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-17 21:28 VM save/restore Junjie Wei
2012-08-18 6:38 ` Keir Fraser
2012-08-18 7:34 ` Keir Fraser
2012-08-20 20:54 ` Junjie Wei
2012-08-20 21:05 ` Junjie Wei [this message]
2012-08-20 20:58 ` Junjie Wei
2012-08-22 21:17 ` Keir Fraser
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