On Thu, Jul 28, 2011 at 11:36:17AM +0300, Avi Kivity wrote:
> Architecturally, PDPTEs are cached in the PDPTRs when CR3 is reloaded.
> On SVM, it is not possible to implement this, but on VMX this is possible
> and was indeed implemented until nested SVM changed this to unconditionally
> read PDPTEs dynamically.  This has noticable impact when running PAE guests.
> 
> Fix by changing the MMU to read PDPTRs from the cache, falling back to
> reading from memory for the nested MMU.
> 
> Signed-off-by: Avi Kivity <[email protected]>

Applied, thanks.

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