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| author |   Janosch Frank <frankja@linux.ibm.com> | 2019-06-06 10:09:15 +0200 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2020-02-27 19:47:11 +0100 |
| commit | e663df91dd8580d23234f723a3d0c419572bc32e (patch) | |
| tree | b4bb5a52355948e65313339989e1caf8a2ad92ed /arch/s390/kvm | |
| parent | KVM: s390: protvirt: Add SCLP interrupt handling (diff) | |
| download | linux-dev-e663df91dd8580d23234f723a3d0c419572bc32e.tar.xz linux-dev-e663df91dd8580d23234f723a3d0c419572bc32e.zip | |
KVM: s390: protvirt: Handle spec exception loops
SIE intercept code 8 is used only on exception loops for protected
guests. That means we need to stop the guest when we see it. This is
done by userspace.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/intercept.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c index 00a79442a428..331e620dcfdf 100644 --- a/arch/s390/kvm/intercept.c +++ b/arch/s390/kvm/intercept.c @@ -231,6 +231,13 @@ static int handle_prog(struct kvm_vcpu *vcpu) vcpu->stat.exit_program_interruption++; + /* + * Intercept 8 indicates a loop of specification exceptions + * for protected guests. + */ + if (kvm_s390_pv_cpu_is_protected(vcpu)) + return -EOPNOTSUPP; + if (guestdbg_enabled(vcpu) && per_event(vcpu)) { rc = kvm_s390_handle_per_event(vcpu); if (rc) |