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Re: [Xen-devel][PATCH] libxc bitmap utils and vcpu-affinity
| To: | Jan Beulich <JBeulich@xxxxxxxxxx>, Dulloor <dulloor@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel][PATCH] libxc bitmap utils and vcpu-affinity |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 23 Mar 2010 11:05:27 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Tue, 23 Mar 2010 04:06:03 -0700 |
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| Thread-index: | AcrKcT0b3YdBxrPtRKGRbiet//Xr2AAB4Ehq |
| Thread-topic: | [Xen-devel][PATCH] libxc bitmap utils and vcpu-affinity |
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On 23/03/2010 10:10, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote: >>>> Dulloor <dulloor@xxxxxxxxx> 22.03.10 18:44 >>> >> Motivation for using xenctl_cpumask in Xen interfaces : >> - xenctl_cpumap is just 4 bytes smaller than static xenctl_cpumask for >> 128 cpus (128 would be good for quite some time). However, the new > > I don't buy this (we're already building for 256 CPUs, looking forward > to further bump this in the not too distant future), and I'm generally > opposed to introducing hard coded limits in a public interface. We should use xenctl_cpumask everywhere for specifying physical CPU bitmaps, even into guest NUMA interfaces if appropriate. I don't really care if it is a bit harder to use than a static bitmap. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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