KVM: MMU: Set the accessed bit on non-speculative shadow ptes

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If we populate a shadow pte due to a fault (and not speculatively due to a
pte write) then we can set the accessed bit on it, as we know it will be
set immediately on the next guest instruction.  This saves a read-modify-write
operation.

Signed-off-by: Avi Kivity <avi@qumranet.com>

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Avi Kivity 2008-03-18 11:05:52 +02:00

parent 97646202bc

commit 947da53830

2 changed files with 7 additions and 5 deletions

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8

arch/x86/kvm/mmu.c

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4

arch/x86/kvm/paging_tmpl.h

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