[Xen-devel] IA32 vcpu-pin broken?

["Apparao, Padmashree K" <padmashree.k.apparao@xxxxxxxxx>]

Hi,

 

I want dom0 and a guest to be on the same physical cpu. I have booted dom0 with 1 cpu and also modified /etc/xen/xend-config.sxp to say “dom0-cpus 1”.

I cannot pin the dom0 cpu however, I can pin the guest cpu to be the same as dom0 pcpu. However, the moment I start running an app in the guest, dom0 pcpu changes to something else.

 

I know it used to work before. I am using the xen-unstable from Aug 29^th. (there is a patch for IA64 on dom0 pinning, but nothing for IA32)

 

Before xm vcpu-list

Name                              ID  VCPU  CPU  State             Time(s)              CPU Affinity

Domain-0                           0     0    1                   r--       2254.4              any cpu

Domain-0                           0     1    -                 --p         0.0                   any cpu

Domain-0                           0     2    -                 --p       0.0                    any cpu

Domain-0                           0     3    -                 --p       0.0                    any cpu

Guest1                                2    0    1                  -b-        2244.2             2

 

After xm vcpu-list

Name                              ID  VCPU  CPU  State             Time(s)              CPU Affinity

Domain-0                           0     0      3                r--       2254.4              any cpu

Domain-0                           0     1    -                 --p         0.0                   any cpu

Domain-0                           0     2    -                 --p        0.0                   any cpu

Domain-0                           0     3    -                 --p        0.0                   any cpu

Guest1                                2    0      1                -b-        2244.2             2

 

 

Thanks

Padma

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