Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20170124' into staging

Two s390x fixes: One for the kvm.c build failure, and one for a bug
that might cause random guest crashes with zeroed out pages on host
kernels with working cmma (< 4.6 and likely >= 4.10).

# gpg: Signature made Tue 24 Jan 2017 15:00:50 GMT
# gpg:                using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20170124:
  s390x/kvm: fix cmma reset for KVM
  s390x/kvm: include hw_accel.h instead of kvm.h
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target/s390x/kvm.c

@@ -32,7 +32,7 @@
 #include "qemu/error-report.h"
 #include "qemu/timer.h"
 #include "sysemu/sysemu.h"
-#include "sysemu/kvm.h"
+#include "sysemu/hw_accel.h"
 #include "hw/hw.h"
 #include "sysemu/device_tree.h"
 #include "qapi/qmp/qjson.h"
@@ -197,7 +197,7 @@ void kvm_s390_cmma_reset(void)
         .attr = KVM_S390_VM_MEM_CLR_CMMA,
     };
 
-    if (!mem_path || !kvm_s390_cmma_available()) {
+    if (mem_path || !kvm_s390_cmma_available()) {
         return;
     }