Re: [Xen-devel] [PATCH][VT] No DISALLOW pte bit check for VMX domain

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 12 Sep 2005, at 14:55, Li, Chengyuan wrote:

> You are right. For VMX guest, we need care PAT bit, though we needn't 
> care GLOBAL bit.
Not sure what you mean -- maybe that the GLOBAL bit is ignored in guest 
VMCS, or that global entries are automatically flushed when 
transitioning?
Well, for now I would just apply the DISALLOW_MASK before calling 
get_page_from_l1e. Missing the global bit cannot harm performance since 
we need to transition into Xen (and hence flush global entries) when 
the guest switches its %cr3 anyway.
 -- Keir


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