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authorThomas Huth <thuth@linux.vnet.ibm.com>2013-06-20 17:22:02 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2013-06-20 23:31:59 +0200
commit93e1750f5ee8417e015bcb0bf2c37bf07b5ff647 (patch)
treea2743482703df5d2a4e29b31bf74ae119328d8cf /arch/s390/kvm/diag.c
parent5087dfa6c8b9f7893819f315eb24201ff5c07142 (diff)
KVM: s390: Check for PSTATE when handling DIAGNOSE
DIAGNOSE is a privileged instruction and thus we must make sure that we are in supervisor mode before taking any other actions. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/s390/kvm/diag.c')
-rw-r--r--arch/s390/kvm/diag.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 1c01a9912989..3074475c8ae0 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -132,6 +132,9 @@ int kvm_s390_handle_diag(struct kvm_vcpu *vcpu)
{
int code = (vcpu->arch.sie_block->ipb & 0xfff0000) >> 16;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
trace_kvm_s390_handle_diag(vcpu, code);
switch (code) {
case 0x10: