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Re: [Xen-devel] 32bit/PAE guest on 64bit hypervisor work
| To: | Jan Beulich <jbeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] 32bit/PAE guest on 64bit hypervisor work |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Mon, 21 Aug 2006 13:28:34 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Mon, 21 Aug 2006 05:28:49 -0700 |
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| Thread-topic: | [Xen-devel] 32bit/PAE guest on 64bit hypervisor work |
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On 21/8/06 1:11 pm, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: >> Per-CPU GDTs would be perfectly acceptable (it's only an extra page per >> CPU). But I suppose since we switch pagetables anyway on the ctxt switch >> path we may as well just have the appropriate ones mapped in each pagetable, >> and remove use of the global bit for that mapping. > > Hmm, why flush the entry on systems where compatibility mode isn't used. I'd > rather keep the global flag and make the flush explicit, but conditional upon > old and new vcpu's domain having different compatibility mode settings. I suppose we can invlpg that entry. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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