diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-04-04 09:41:32 +0200 |
|---|---|---|
| committer | Jérôme Glisse <jglisse@redhat.com> | 2016-04-07 13:23:15 -0400 |
| commit | 7fc7c49d408fcc6e69ddd45d97ee5fc94d1e4c14 (patch) | |
| tree | 32ad1ec46777807e811c3837efc461c6bdf95e48 /arch | |
| parent | 63bd450ed552c80d466ec83b292d64cd0c610e18 (diff) | |
s390/mm/kvm: fix mis-merge in gmap handling
commit 1e133ab296f3 ("s390/mm: split arch/s390/mm/pgtable.c") dropped
some changes from commit a3a92c31bf0b ("KVM: s390: fix mismatch
between user and in-kernel guest limit") - this breaks KVM for some
memory sizes (kvm-s390: failed to commit memory region) like
exactly 2GB.
Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/mm/gmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index 69247b4dcc43..cace818d86eb 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -23,7 +23,7 @@ /** * gmap_alloc - allocate a guest address space * @mm: pointer to the parent mm_struct - * @limit: maximum size of the gmap address space + * @limit: maximum address of the gmap address space * * Returns a guest address space structure. */ @@ -292,7 +292,7 @@ int gmap_map_segment(struct gmap *gmap, unsigned long from, if ((from | to | len) & (PMD_SIZE - 1)) return -EINVAL; if (len == 0 || from + len < from || to + len < to || - from + len > TASK_MAX_SIZE || to + len > gmap->asce_end) + from + len - 1 > TASK_MAX_SIZE || to + len - 1 > gmap->asce_end) return -EINVAL; flush = 0; |