On 06/19/2013 08:13 PM, Paolo Bonzini wrote: > Il 19/06/2013 11:09, Xiao Guangrong ha scritto: >> Document fast page fault to Documentation/virtual/kvm/mmu.txt >> >> Signed-off-by: Xiao Guangrong <xiaoguangr...@linux.vnet.ibm.com> >> --- >> Documentation/virtual/kvm/mmu.txt | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/Documentation/virtual/kvm/mmu.txt >> b/Documentation/virtual/kvm/mmu.txt >> index 4fb442b..b5ce7dd 100644 >> --- a/Documentation/virtual/kvm/mmu.txt >> +++ b/Documentation/virtual/kvm/mmu.txt >> @@ -275,6 +275,9 @@ Handling a page fault is performed as follows: >> information is stored and cache the information to vcpu->arch.mmio_gva, >> vcpu->arch.access and vcpu->arch.mmio_gfn then call the emulator to >> emulate >> the instruction who will get the benefit from the cached mmio info >> + - If both P bit and R/W bit of error code are set, there has a chance to >> + fast fix the page fault, please see the description of "Fast page fault" >> in >> + Documentation/virtual/kvm/locking.txt
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