From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: [Xen-devel] What's the different for
 "dom0_max_vcpus=4 dom0_vcpus_pin" and "dom0_max_vcpus=4" ?
Date: Fri, 21 May 2010 16:59:27 +0100
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To: lei yang <yanglei.fage@gmail.com>
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On 21/05/2010 16:39, "lei yang" <yanglei.fage@gmail.com> wrote:

>> The former restricts Xen to only run Dom0 VCPUs 0-3 on physical CPUs 0-3=
.
> =A0
> dom0_max_vcpus=3D4 dom0_vcpus_pin will just to core0-3? can it be 3 4 5 6?
> if remove "dom0_vcpus_pin" just use "=A0=A0dom0_max_vcpus=3D4 " can it be 3 4 5=
 6 ?

No, but you can set whatever affinity you like after dom0 has booted. For
example, to pin Dom0 VCPUs 0-3 to CPUs 3-6 respectively:
xl vcpu-pin 0 0 3
xl vcpu-pin 0 1 4
xl vcpu-pin 0 2 5
xl vcpu-pin 0 3 6
(or use xm vcpu-pin if you are not using the new xl command).

 -- Keir