Re: [PATCH] Expose resource control capabilites on cache bank

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On Thu, Apr 06, 2017 at 07:31:00PM +0800, Eli Qiao wrote:
> 
> 
> On Thursday, 6 April 2017 at 5:51 PM, Daniel P. Berrange wrote:
> 
> > On Thu, Apr 06, 2017 at 11:49:14AM +0200, Martin Kletzander wrote:
> > > On Thu, Apr 06, 2017 at 04:20:06PM +0800, Eli Qiao wrote:
> > > > This patch is based on Martin's cache branch.
> > > > 
> > > > This patch amends the cache bank capability as follow:
> > > > 
> > > > <bank id='0' level='3' type='unified' size='15360' unit='KiB' cpus='0-5'/>
> > > > <control min='768' unit='KiB' type='unified' nclos='4'/>
> > > > <bank id='1' level='3' type='unified' size='15360' unit='KiB' cpus='6-11'/>
> > > > <control min='768' unit='KiB' type='unified' nclos='4'/>
> > > > 
> > > 
> > > 
> > 
> > 
> > Either the XML is malformed, or the indentation is wrong. The indentation
> > suggests you want nested XML elements, but the parent element is an empty
> > tag, so you've actually got a flat namespace here.
> > 
> 
> <cache>
>   <bank id='0' level='3' type='unified' size='15360' unit='KiB' cpus='0-5'/>
>     <control min='768' unit='KiB' type='unified' nallocations='4'/>
>   <bank id='1' level='3' type='unified' size='15360' unit='KiB' cpus='6-11'/>
>     <control min='768' unit='KiB' type='unified' nallocations='4'/>
> </cache>
> 
> 
> I validate it online, no errors, the result is:

You've checked the XML syntax, but *not* the semantics.

You've implemented this:

 <cache>
   <bank id='0' level='3' type='unified' size='15360' unit='KiB' cpus='0-5'/>
   <control min='768' unit='KiB' type='unified' nallocations='4'/>
   <bank id='1' level='3' type='unified' size='15360' unit='KiB' cpus='6-11'/>
   <control min='768' unit='KiB' type='unified' nallocations='4'/>
 </cache>

but indentation suggests you meant to do

 <cache>
   <bank id='0' level='3' type='unified' size='15360' unit='KiB' cpus='0-5'>
     <control min='768' unit='KiB' type='unified' nallocations='4'/>
   </bank>
   <bank id='1' level='3' type='unified' size='15360' unit='KiB' cpus='6-11'>
     <control min='768' unit='KiB' type='unified' nallocations='4'/>
   </bank>
 </cache>

both are valid XML, but they have completely different semantics

Regards,
Daniel
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