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Re: [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circ
| To: | Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circumstances |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 27 Oct 2009 00:22:06 +0000 |
| Cc: | |
| Delivery-date: | Mon, 26 Oct 2009 17:22:36 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH] pvcpuid: mask TSC invariant bit for various circumstances |
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On 26/10/2009 23:12, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote: > pvcpuid: mask TSC invariant bit for PV domains if migration > is not disabled and TSC is not emulated > > (Need similar patch for HVM domain) > > Signed-off-by: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx> This only affects PV domUs. I suggest patching pv_cpuid() to catch dom0, and then really all domUs should be handled by xc_cpuid_apply_policy(), which pushes CPUID info down to the hypervisor, as called from xend's image.py:setCpuid(). The advantage of this is that the hypervisor does not need to be informed of the 'disable_migrate' flag at all -- it can be assumed to be true for dom0 -- and it can be handled entirely in the tools. Hence I can get rid of the new domctl, which is nice. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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