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Re: [Xen-devel] [PATCH 0/4] XSAVE/XRSTOR fixes and enhancements
| To: | Weidong Han <weidong.han@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 0/4] XSAVE/XRSTOR fixes and enhancements |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 31 Aug 2010 08:41:30 +0100 |
| Cc: | Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Tue, 31 Aug 2010 00:42:38 -0700 |
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| Thread-index: | ActI3wpuLDrNBwjsRxyO6Kg2/XJWJQAAOJ+e |
| Thread-topic: | [Xen-devel] [PATCH 0/4] XSAVE/XRSTOR fixes and enhancements |
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On 31/08/2010 08:35, "Weidong Han" <weidong.han@xxxxxxxxx> wrote: >> Breaks backward compatibility by changing size of vcpu_guest_context (part >> of the PV guest ABI). Totally unacceptable -- is this a nasty attempt to get >> > yes, it cannot restore guest saved by old Xen. do you mean we should not > change size of vcpu_guest_context in future? Yes, and it's not just a save/restore issue. The PV guest itself handles vcpu_guest_context when booting secondary vcpus (via VCPUOP_initialise). The structure layout/size is set in stone. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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