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-rw-r--r--arch/s390/kvm/guestdbg.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c
index 100e99d1030d..757ccef62fd5 100644
--- a/arch/s390/kvm/guestdbg.c
+++ b/arch/s390/kvm/guestdbg.c
@@ -155,6 +155,8 @@ void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu)
*/
if (guestdbg_sstep_enabled(vcpu)) {
+ /* disable timer (clock-comparator) interrupts */
+ vcpu->arch.sie_block->gcr[0] &= ~0x800ul;
vcpu->arch.sie_block->gcr[9] |= PER_EVENT_IFETCH;
vcpu->arch.sie_block->gcr[10] = 0;
vcpu->arch.sie_block->gcr[11] = PSW_ADDR_INSN;