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| author | Janosch Frank <frankja@linux.ibm.com> | 2020-10-20 13:12:07 +0300 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2020-11-11 11:31:48 +0300 |
| commit | 1ed576a20cd5c93295f57d6b7400357bd8d01b21 (patch) | |
| tree | f5c6a831d65dd0381f4a15b73cac56b22f347a9f /arch/s390/mm/gmap.c | |
| parent | 6d6a18fdde8b86b919b740ad629153de432d12a8 (diff) | |
| download | linux-1ed576a20cd5c93295f57d6b7400357bd8d01b21.tar.xz | |
KVM: s390: pv: Mark mm as protected after the set secure parameters and improve cleanup
We can only have protected guest pages after a successful set secure
parameters call as only then the UV allows imports and unpacks.
By moving the test we can now also check for it in s390_reset_acc()
and do an early return if it is 0.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Fixes: 29b40f105ec8 ("KVM: s390: protvirt: Add initial vm and cpu lifecycle handling")
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/gmap.c')
| -rw-r--r-- | arch/s390/mm/gmap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index cfb0017f33a7..64795d034926 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -2690,6 +2690,8 @@ static const struct mm_walk_ops reset_acc_walk_ops = { #include <linux/sched/mm.h> void s390_reset_acc(struct mm_struct *mm) { + if (!mm_is_protected(mm)) + return; /* * we might be called during * reset: we walk the pages and clear |