diff options
| author | Dominik Dingel <dingel@linux.vnet.ibm.com> | 2015-08-11 11:12:12 +0200 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2015-11-11 17:21:39 +0100 |
| commit | 4c292a009700755a1e6b234063ef3f2db235aaae (patch) | |
| tree | 923a0f286415fc21b9359a2b0a65d04c69bef069 /target-s390x/kvm.c | |
| parent | ae23a33591056d6349753766047ebc511158da9c (diff) | |
s390x/kvm: don't enable CMMA when hugetlbfs will be used
On hugetlbfs CMMA will not be useful as every ESSA instruction will trap.
So don't offer CMMA to guests with a hugepages backing.
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'target-s390x/kvm.c')
| -rw-r--r-- | target-s390x/kvm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index c3be180de2..75a0e5d1c3 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -258,7 +258,9 @@ int kvm_arch_init(MachineState *ms, KVMState *s) cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP); cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ); - kvm_s390_enable_cmma(s); + if (!mem_path) { + kvm_s390_enable_cmma(s); + } if (!kvm_check_extension(s, KVM_CAP_S390_GMAP) || !kvm_check_extension(s, KVM_CAP_S390_COW)) { |