From: Christian Borntraeger <borntrae...@de.ibm.com>
PV_ENABLE (and maybe others) might return -EINTR when a signal is
pending. See the Linux kernel patch "s390/gmap: return proper error code
on ksm unsharing" for details. Let us retry the ioctl in that case.
Fixes: c3347ed0d2ee ("s390x: protvirt: Support unpack facility")
Reported-by: Marc Hartmayer <mhart...@linux.ibm.com>
Acked-by: Janosch Frank <fran...@linux.vnet.ibm.com>
Tested-by: Marc Hartmayer <mhart...@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com>
Message-Id: <20200327124616.34866-1-borntrae...@de.ibm.com>
Signed-off-by: Cornelia Huck <coh...@redhat.com>
---
hw/s390x/pv.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/hw/s390x/pv.c b/hw/s390x/pv.c
index a40a8448060c..cb0dce4a4f06 100644
--- a/hw/s390x/pv.c
+++ b/hw/s390x/pv.c
@@ -23,7 +23,11 @@ static int __s390_pv_cmd(uint32_t cmd, const char *cmdname,
void *data)
.cmd = cmd,
.data = (uint64_t)data,
};
- int rc = kvm_vm_ioctl(kvm_state, KVM_S390_PV_COMMAND, &pv_cmd);
+ int rc;
+
+ do {
+ rc = kvm_vm_ioctl(kvm_state, KVM_S390_PV_COMMAND, &pv_cmd);
+ } while (rc == -EINTR);
if (rc) {
error_report("KVM PV command %d (%s) failed: header rc %x rrc %x "
--
2.21.1
