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authorJanosch Frank <frankja@linux.ibm.com>2018-07-13 12:28:37 +0200
committerJanosch Frank <frankja@linux.ibm.com>2018-07-30 23:13:38 +0200
commita9e00d8349c98e0973c8b0d671d69e838f7b5bcc (patch)
treeb6c9a4374f72c0f6ccea510dc8fc1f8c74d43d2d /arch/s390/include/asm/mmu_context.h
parents390/mm: hugetlb pages within a gmap can not be freed (diff)
downloadlinux-a9e00d8349c98e0973c8b0d671d69e838f7b5bcc.tar.xz
linux-a9e00d8349c98e0973c8b0d671d69e838f7b5bcc.zip
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/include/asm/mmu_context.h')
-rw-r--r--arch/s390/include/asm/mmu_context.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index d16bc79c30bb..0717ee76885d 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -32,6 +32,7 @@ static inline int init_new_context(struct task_struct *tsk,
mm->context.has_pgste = 0;
mm->context.uses_skeys = 0;
mm->context.uses_cmm = 0;
+ mm->context.allow_gmap_hpage_1m = 0;
#endif
switch (mm->context.asce_limit) {
case _REGION2_SIZE: