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authorChristian Borntraeger <borntraeger@de.ibm.com>2008-07-29 23:48:42 +0200
committerAvi Kivity <avi@qumranet.com>2008-07-31 11:57:18 +0300
commit1f4170e12db06fdde5279d665a7e6e2976b2b623 (patch)
tree6e804c79330dc3b93d05c56e66c9d53c461cd0a9 /arch/s390/kvm
parented8486243379ef3e6c61363df915882945c0eaec (diff)
downloadop-kernel-dev-1f4170e12db06fdde5279d665a7e6e2976b2b623.zip
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KVM: s390: Fix kvm on IBM System z10
The z10 system supports large pages, kvm-s390 doesnt. Make sure that we dont advertise large pages to avoid the guest crashing as soon as the guest kernel activates DAT. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/priv.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 2e2d2ff..d1faf5c 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -158,6 +158,7 @@ static int handle_stfl(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stfl++;
facility_list &= ~(1UL<<24); /* no stfle */
+ facility_list &= ~(1UL<<23); /* no large pages */
rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
&facility_list, sizeof(facility_list));
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