Commit d3714010 authored by Marcelo Tosatti's avatar Marcelo Tosatti Committed by Paolo Bonzini
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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: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: default avatarXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: default avatarPaolo 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;