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authorChristian Ehrhardt <ehrhardt@linux.vnet.ibm.com>2009-05-20 15:34:56 +0200
committerAvi Kivity <avi@redhat.com>2009-09-10 08:32:42 +0300
commitb1d16c495d9e6fe48e7df2e1d18cafc6555a116a (patch)
tree759aa4b488f4c0874b2561e932b04f018b514463 /arch/s390/kvm
parent9ace903d171db7dc2fed96e44ac62b6f4c3ccb3d (diff)
downloadlinux-linaro-android-b1d16c495d9e6fe48e7df2e1d18cafc6555a116a.tar.gz
KVM: s390: fix signal handling
If signal pending is true we exit without updating kvm_run, userspace currently just does nothing and jumps to kvm_run again. Since we did not set an exit_reason we might end up with a random one (whatever was the last exit). Therefore it was possible to e.g. jump to the psw position the last real interruption set. Setting the INTR exit reason ensures that no old psw data is swapped in on reentry. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/kvm-s390.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 1d65f627716..5c1c3025900 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -527,8 +527,10 @@ rerun_vcpu:
if (rc == SIE_INTERCEPT_RERUNVCPU)
goto rerun_vcpu;
- if (signal_pending(current) && !rc)
+ if (signal_pending(current) && !rc) {
+ kvm_run->exit_reason = KVM_EXIT_INTR;
rc = -EINTR;
+ }
if (rc == -ENOTSUPP) {
/* intercept cannot be handled in-kernel, prepare kvm-run */