Messages in this thread | | | Date | Sun, 18 Dec 2011 10:59:51 +0200 | From | Avi Kivity <> | Subject | Re: [PATCH 4/8] KVM: MMU: drop unsync_child_bitmap |
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On 12/16/2011 12:16 PM, Xiao Guangrong wrote: > unsync_child_bitmap is used to record which spte has unsync page or unsync > children, we can set a free bit in the spte instead of it >
unsync_child_bitmap takes one cacheline; the shadow page table takes 64. This will make unsync/resync much more expensive.
I suggest to put unsync_child_bitmap at the end (together with unsync_children) and simply not allocate it when unneeded (have two kmem_caches for the two cases).
-- error compiling committee.c: too many arguments to function
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