KVM: s390: Fix access to CR6 in TPI handler
authorThomas Huth <thuth@linux.vnet.ibm.com>
Wed, 9 Oct 2013 12:15:54 +0000 (14:15 +0200)
committerCornelia Huck <cornelia.huck@de.ibm.com>
Thu, 28 Nov 2013 10:08:12 +0000 (11:08 +0100)
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>
arch/s390/kvm/priv.c

index 2440602e6df1e19ab442b3eafd6f18b6342792ec..b18fe52c2c47d1e21a574ad3d72eac2d88d3f814 100644 (file)
@@ -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;