Messages in this thread | | | Date | Mon, 25 Apr 2022 18:01:00 +0200 | Subject | Re: [PATCH v2 1/2] KVM: s390: Don't indicate suppression on dirtying, failing memop | From | Christian Borntraeger <> |
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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>
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