Hi,
this is patch to add maxvcpus support to xen xm command. It''s using
vcpu_avail bitmask and sets the number of vcpus to maxvcpus if present.
If it''s not present, old behavior is preserved.
In domain config file you can define it as follows:
maxvcpus = 4
vcpus = 2
this automatically sets vcpus to 4 and corresponding bitmask to present
2 vcpus in the guest with option to increase it up to 4 vcpus. If
maxvcpus is not present, the old behavior for vcpus is preserved, ie.
you can set vcpus to some number of vcpus to be used and the vcpu_avail
is set appropriately to use all of them. Only when you use maxvcpus and
vcpus new vcpu_avail value is calculated to show PV guest the desired
number of vcpus only.
It''s been tested using RHEL-5 32-bit PV guest with maxvcpus = 4 and
vcpus = 2 and also the previous setup of vcpus = 2 only... In both cases
I was able to use ''xm vcpu-set {domainId} {numberOfVCPUs}'' to
increase
move vcpu count from 0 to maxvcpus/vcpus so it was working as designed.
Michal
Signed-off-By: Michal Novotny<minovotn@redhat.com>
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Xen-devel@lists.xensource.com
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Hi,
this is patch to add maxvcpus support to xen xm command. It''s using
vcpu_avail bitmask and sets the number of vcpus to maxvcpus if present.
If it''s not present, old behavior is preserved.
In domain config file you can define it as follows:
maxvcpus = 4
vcpus = 2
this automatically sets vcpus to 4 and corresponding bitmask to present
2 vcpus in the guest with option to increase it up to 4 vcpus. If
maxvcpus is not present, the old behavior for vcpus is preserved, ie.
you can set vcpus to some number of vcpus to be used and the vcpu_avail
is set appropriately to use all of them. Only when you use maxvcpus and
vcpus new vcpu_avail value is calculated to show PV guest the desired
number of vcpus only.
It''s been tested using RHEL-5 32-bit PV guest with maxvcpus = 4 and
vcpus = 2 and also the previous setup of vcpus = 2 only... In both cases
I was able to use ''xm vcpu-set {domainId} {numberOfVCPUs}'' to
increase
move vcpu count from 0 to maxvcpus/vcpus so it was working as designed.
Michal
Signed-off-By: Michal Novotny<minovotn@redhat.com>
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel