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Re: [Xen-devel] Xen not running the pmtimer's timer on VCPUs different f
| To: | Paolo Bonzini <pbonzini@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Xen not running the pmtimer's timer on VCPUs different from VCPU#0 |
| From: | Keir Fraser <keir.xen@xxxxxxxxx> |
| Date: | Thu, 03 Mar 2011 13:17:05 +0000 |
| Cc: | kouya@xxxxxxxxxxxxxx |
| Delivery-date: | Thu, 03 Mar 2011 05:18:04 -0800 |
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| Thread-topic: | [Xen-devel] Xen not running the pmtimer's timer on VCPUs different from VCPU#0 |
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On 03/03/2011 11:45, "Paolo Bonzini" <pbonzini@xxxxxxxxxx> wrote: > Hi, > > in order to support kdump/kexec on multiprocessor HVM guests, the patch at > http://xenbits.xensource.com/xen-unstable.hg/rev/19907 was committed. > The patch migrates all timers (via the pt infrastructure) to a VCPU whose > LAPIC is configured to receive the legacy 8259 interrupts. > > In doing this, however, the pmtimer is left out. Its timer won't ever > move away from VCPU#0. Is there a reason for this, or is it just an > oversight? The pmtimer emulation isn't hooked into the vpt infrastructure, hence I don't think its essential for it to be using pt_global_vcpu_target(). That said it might still be a good for consistency. Something to consider after 4.1.0 is released, however. -- Keir > Thanks in advance, > > Paolo > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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