[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[PATCH 1/1] s390x/protvirt: allow to IPL secure execution guests with -n

From: Christian Borntraeger
Subject: [PATCH 1/1] s390x/protvirt: allow to IPL secure execution guests with -no-reboot
Date: Tue, 21 Jul 2020 06:32:02 -0400

Right now -no-reboot does prevent secure execution guests from running.
This is right from an implementation aspect, 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 secure 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. To call it a 2nd 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>
 hw/s390x/ipl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index ce21494c08..e312a35133 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -633,7 +633,8 @@ void s390_ipl_reset_request(CPUState *cs, enum s390_reset 
     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  */
     } else {

reply via email to

[Prev in Thread] Current Thread [Next in Thread]