Re: [PATCH] x86: make the dom0_max_vcpus option more flexible

[David Vrabel <david.vrabel@citrix.com>]

On 07/05/12 09:19, Jan Beulich wrote:
>> Subject: [PATCH] x86: make the dom0_max_vcpus option more flexible
>>
>> The dom0_max_vcpus command line option only allows the exact number of
>> VCPUs for dom0 to be set.  It is not possible to say "up to N VCPUs
>> but no more than the number physically present."
>>
>> Allow a range for the option to set a minimum number of VCPUs, and a
>> maximum which does not exceed the number of PCPUs.
>>
>> For example, with "dom0_max_vcpus=4-8":
>>
>>     PCPUs  Dom0 VCPUs
>>      2      4
>>      4      4
>>      6      6
>>      8      8
>>     10      8
>>
>> Existing command lines with "dom0_max_vcpus=N" still work as before.
>>
>> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
> 
> Acked-by: Jan Beulich <jbeulich@suse.com>
> 
> But I'm not sure whether this qualifies for going in for 4.2...

I don't think it's a 4.2 candidate.  I posted it now we need this
functionality in XenServer and I didn't want to change the command line
in a way that would be incompatible with upstream.

David