linux

iv/linux

History

Heiko Carstens 0c02cc576e KVM: s390: fix sthyi error handling

Commit 9fb6c9b3fea1 ("s390/sthyi: add cache to store hypervisor info")
added cache handling for store hypervisor info. This also changed the
possible return code for sthyi_fill().

Instead of only returning a condition code like the sthyi instruction would
do, it can now also return a negative error value (-ENOMEM). handle_styhi()
was not changed accordingly. In case of an error, the negative error value
would incorrectly injected into the guest PSW.

Add proper error handling to prevent this, and update the comment which
describes the possible return values of sthyi_fill().

Fixes: 9fb6c9b3fea1 ("s390/sthyi: add cache to store hypervisor info")
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Link: https://lore.kernel.org/r/20230727182939.2050744-1-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

2023-07-29 14:56:41 +02:00

diag.c

KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler

2023-06-16 11:08:09 +02:00

gaccess.c

s390: fix various typos

2023-07-03 11:19:42 +02:00

gaccess.h

KVM: s390: Extend MEM_OP ioctl by storage key checked cmpxchg

2023-02-07 18:06:00 +01:00

guestdbg.c

KVM: s390: Add memcg accounting to KVM allocations