diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2020-07-21 06:32:02 -0400 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2020-07-24 08:35:22 +0200 |
| commit | d1bb69db4ceb6897ef6a17bf263146b53a123632 (patch) | |
| tree | cd27c2fa370a30a8bfb122e620fcc56eff72e62e /hw/s390x | |
| parent | 8ffa52c20d5693d454f65f2024a1494edfea65d4 (diff) | |
s390x/protvirt: allow to IPL secure guests with -no-reboot
Right now, -no-reboot prevents secure guests from running. This is
correct from an implementation point of view, as we have modeled the
transition from non-secure to secure as a program directed IPL. From
a user perspective, this is not the behavior of least surprise.
We should implement the IPL into protected mode similar to the
functions that we use for kdump/kexec. In other words, we do not stop
here when -no-reboot is specified on the command line. Like function 0
or function 1, function 10 is not a classic reboot. For example, it
can only be called once. Before calling it a second time, a real
reboot/reset must happen in-between. So function code 10 is more or
less a state transition reset, but not a "standard" reset or reboot.
Fixes: 4d226deafc44 ("s390x: protvirt: Support unpack facility")
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Message-Id: <20200721103202.30610-1-borntraeger@de.ibm.com>
[CH: tweaked description]
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'hw/s390x')
| -rw-r--r-- | hw/s390x/ipl.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c index d46b1f094f..3d2652d75a 100644 --- a/hw/s390x/ipl.c +++ b/hw/s390x/ipl.c @@ -630,7 +630,8 @@ void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) } } if (reset_type == S390_RESET_MODIFIED_CLEAR || - reset_type == S390_RESET_LOAD_NORMAL) { + reset_type == S390_RESET_LOAD_NORMAL || + reset_type == S390_RESET_PV) { /* ignore -no-reboot, send no event */ qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); } else { |