RE: [Xen-ia64-devel][Patch]Add two PAL callswhichfixSMPwindowsinstallation crashing bug

["Xu, Anthony" <anthony.xu@xxxxxxxxx>]

Alex Williamson write on 2007年4月3日 5:52:
> On Mon, 2007-04-02 at 15:08 -0600, Alex Williamson wrote:
>> This suggests to me that maybe it's not the
>> dual-core vs single-core that's really causing problems, but
>> something windows does with "extra" CPUs that we aren't emulating. 
>> Thanks, 

One question, can windows be installed on  SC Montecito with more than two 
processors?

>> 
> 
>    After further consideration, you observed the "extra" CPUs idling
> in SAL. 

Sorry, I described this incorretly, the "extra" CPUs are deaplooping at the very
beginning of windows boot.


> I observed during install that PAL calls were made on the
> 3rd CPU just prior to the panic.  The only way I know CPUs could get
> back into idling in SAL is through the b0 return path.  Do we get the
> same panic with a Linux guest if a CPU hotplug operation is
> attempted?  I tried to test this, but I can't seem to get a 2.6.20
> kernel to boot (the same kernel boots fine with Tristan's GFW).  Is
> this simply a matter that the GFW needs to support vCPU hotplug? 
> Thanks, 

Hi Alex,

        I don't think this issue is related with vCPU hotplug.
We can install windows on Montecito with 4 Logical processors, and these
4 logical processors are running inside windows, means they are up.
And after applying this patch, we can install windows on XEN/VTI domain with 4 
vcpu
Running.


thanks,
anthony
> 
>       Alex

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