25 Apr
2022
25 Apr
'22
4:01 p.m.
Am 25.04.22 um 12:01 schrieb Janis Schoetterl-Glausch:
If user space uses a memop to emulate an instruction and that memop fails, the execution of the instruction ends. Instruction execution can end in different ways, one of which is suppression, which requires that the instruction execute like a no-op. A writing memop that spans multiple pages and fails due to key protection can modified guest memory, as a result, the likely correct ending is termination. Therefore do not indicate a suppressing instruction ending in this case.
Signed-off-by: Janis Schoetterl-Glausch scgl@linux.ibm.com
arch/s390/kvm/gaccess.c | 47 ++++++++++++++++++++++++----------------- 1 file changed, 28 insertions(+), 19 deletions(-)
Reviewed-by: Christian Borntraeger borntraeger@linux.ibm.com