Re: [Xen-devel] 32bit/PAE guest on 64bit hypervisor work

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

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



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