Re: [PATCH v6 5/9] KVM: MMU: introduce SPTE_MMU_WRITEABLE bit

[Marcelo Tosatti]

On Tue, May 29, 2012 at 02:49:14PM +0800, Xiao Guangrong wrote:
> This bit indicates whether the spte can be writable on MMU, that means
> the corresponding gpte is writable and the corresponding gfn is not
> protected by shadow page protection

Why is this still necessary, now that only sptes of direct shadow pages 
are updated locklessly? 

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