Il 26/02/2014 02:44, Marcelo Tosatti ha scritto:
emulator_cmpxchg_emulated writes to guest memory, therefore it should
updated the dirty bitmap accordingly.
Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 39c28f09..29db96d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4394,6 +4394,7 @@ static int emulator_cmpxchg_emulated(struct
x86_emulate_ctxt *ctxt,
if (!exchanged)
return X86EMUL_CMPXCHG_FAILED;
+ mark_page_dirty(vcpu->kvm, gpa >> PAGE_SHIFT);
kvm_mmu_pte_write(vcpu, gpa, new, bytes);
return X86EMUL_CONTINUE;
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Applied to kvm/queue, thanks.
Paolo
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