Commit d3714010 authored Feb 25, 2014 by Marcelo Tosatti Committed by Paolo Bonzini Feb 26, 2014

KVM: x86: emulator_cmpxchg_emulated should mark_page_dirty



emulator_cmpxchg_emulated writes to guest memory, therefore it should
update the dirty bitmap accordingly.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 390bd528

arch/x86/kvm/x86.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -4399,6 +4399,7 @@ 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;