Commit 93e1750f authored Jun 20, 2013 by Thomas Huth Committed by Paolo Bonzini Jun 20, 2013

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>

parent 5087dfa6

arch/s390/kvm/diag.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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: