s390x/kvm: fix cmma reset for KVM

We must reset the CMMA states for normal memory (when not on mem path),
but the current code does the opposite. This was unnoticed for some time
as the kernel since 4.6 also had a bug which mostly disabled the paging
optimizations.

Fixes: 07059effd14e ("s390x/kvm: let the CPU model control CMM(A)")
Cc: qemu-stable@nongnu.org # v2.8
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
(cherry picked from commit 0cf4d747cb8d053e6a6161aadfd3531fa1a62be1)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 97afe02599ba9a714e80bdca76a0b919263d0152..5fc4ed1bbdcbacc2a962ceff0c4e1625ff87c083 100644 (file)
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -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;
     }