Use kvm_vcpu_map in emulator_cmpxchg_emulated since using
kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has
a "struct page".
Signed-off-by: NKarimAllah Ahmed <karahmed@amazon.de>
Reviewed-by: NKonrad Rzeszutek Wilk <kjonrad.wilk@oracle.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>