Commit f092669e authored Oct 09, 2013 by Thomas Huth Committed by Cornelia Huck Nov 28, 2013

KVM: s390: Fix access to CR6 in TPI handler

The TPI handler currently uses vcpu->run->s.regs.crs[6] to get the current
value of CR6. I think this is wrong, because vcpu->run->s.regs.crs is
only updated when kvm_arch_vcpu_ioctl_run() drops back to userspace.
So let's change the TPI handler to use vcpu->arch.sie_block->gcr[6] instead.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

parent ac5b0342

arch/s390/kvm/priv.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -197,7 +197,7 @@ static int handle_tpi(struct kvm_vcpu *vcpu)
		if (addr & 3)
		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
		cc = 0;
		inti = kvm_s390_get_io_int(vcpu->kvm, vcpu->run->s.regs.crs[6], 0);
		inti = kvm_s390_get_io_int(vcpu->kvm, vcpu->arch.sie_block->gcr[6], 0);
		if (!inti)
		goto no_interrupt;
		cc = 1;