diff options
| author | Janosch Frank <frankja@linux.ibm.com> | 2018-07-13 11:28:37 +0100 |
|---|---|---|
| committer | Janosch Frank <frankja@linux.ibm.com> | 2018-07-30 23:13:38 +0200 |
| commit | a9e00d8349c98e0973c8b0d671d69e838f7b5bcc (patch) | |
| tree | b6c9a4374f72c0f6ccea510dc8fc1f8c74d43d2d /arch/s390/mm/pgtable.c | |
| parent | 7d735b9ae82d073e23ff7d2648e0aa8056049d16 (diff) | |
s390/mm: Add huge page gmap linking support
Let's allow huge pmd linking when enabled through the
KVM_CAP_S390_HPAGE_1M capability. Also we can now restrict gmap
invalidation and notification to the cases where the capability has
been activated and save some cycles when that's not the case.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'arch/s390/mm/pgtable.c')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 37d68706f5aa..f2cc7da473e4 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -347,7 +347,7 @@ static inline void pmdp_idte_local(struct mm_struct *mm, mm->context.asce, IDTE_LOCAL); else __pmdp_idte(addr, pmdp, 0, 0, IDTE_LOCAL); - if (mm_has_pgste(mm)) + if (mm_has_pgste(mm) && mm->context.allow_gmap_hpage_1m) gmap_pmdp_idte_local(mm, addr); } @@ -357,15 +357,15 @@ static inline void pmdp_idte_global(struct mm_struct *mm, if (MACHINE_HAS_TLB_GUEST) { __pmdp_idte(addr, pmdp, IDTE_NODAT | IDTE_GUEST_ASCE, mm->context.asce, IDTE_GLOBAL); - if (mm_has_pgste(mm)) + if (mm_has_pgste(mm) && mm->context.allow_gmap_hpage_1m) gmap_pmdp_idte_global(mm, addr); } else if (MACHINE_HAS_IDTE) { __pmdp_idte(addr, pmdp, 0, 0, IDTE_GLOBAL); - if (mm_has_pgste(mm)) + if (mm_has_pgste(mm) && mm->context.allow_gmap_hpage_1m) gmap_pmdp_idte_global(mm, addr); } else { __pmdp_csp(pmdp); - if (mm_has_pgste(mm)) + if (mm_has_pgste(mm) && mm->context.allow_gmap_hpage_1m) gmap_pmdp_csp(mm, addr); } } |