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Re: [Xen-devel] poweroff in 3.2 and 3.3
| To: | Jan Beulich <jbeulich@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] poweroff in 3.2 and 3.3 |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Wed, 19 Nov 2008 13:21:50 +0000 |
| Cc: | "Tian, Kevin" <kevin.tian@xxxxxxxxx> |
| Delivery-date: | Wed, 19 Nov 2008 05:22:15 -0800 |
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| Thread-topic: | [Xen-devel] poweroff in 3.2 and 3.3 |
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On 19/11/08 13:18, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: > The hypervisor appears to make the assumption that all but the vCPU > XENPF_enter_acpi_sleep is being called on are down (in 3.2 because the > sender of the event check IPI assumes the remote CPU is idle, in 3.3 by > and explicit check in __cpu_disable() - here we also have an incorrect > comment stating that this path can only be used when entering S3). > > I can't, however, see how this would be guaranteed on the kernel side > (and apart from that I don't think the hypervisor should be dependent on > kernel behavior here, even if it's dom0). Shouldn't therefore > freeze_domains() not only freeze all DomU-s, but also all non-current > vCPU-s of Dom0? Kevin Tian is probably best placed to answer this. I'm happy to see this added if he agrees. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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