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| author | Janosch Frank <frankja@linux.ibm.com> | 2018-07-13 11:28:18 +0100 |
|---|---|---|
| committer | Janosch Frank <frankja@linux.ibm.com> | 2018-07-30 11:20:17 +0100 |
| commit | 2c46e974dd8b5316e65637af0ff6d4bc78554b2e (patch) | |
| tree | 2f15ffca17af4db7af79579892e155d6a5fc4342 /arch/s390/include/asm/gmap.h | |
| parent | 5a045bb9c44caebcf4e88bf78343166596c0014b (diff) | |
| download | linux-2c46e974dd8b5316e65637af0ff6d4bc78554b2e.tar.bz2 | |
s390/mm: Abstract gmap notify bit setting
Currently we use the software PGSTE bits PGSTE_IN_BIT and
PGSTE_VSIE_BIT to notify before an invalidation occurs on a prefix
page or a VSIE page respectively. Both bits are pgste specific, but
are used when protecting a memory range.
Let's introduce abstract GMAP_NOTIFY_* bits that will be realized into
the respective bits when gmap DAT table entries are protected.
Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'arch/s390/include/asm/gmap.h')
| -rw-r--r-- | arch/s390/include/asm/gmap.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/include/asm/gmap.h b/arch/s390/include/asm/gmap.h index e07cce88dfb0..c1bc5633fc6e 100644 --- a/arch/s390/include/asm/gmap.h +++ b/arch/s390/include/asm/gmap.h @@ -9,6 +9,10 @@ #ifndef _ASM_S390_GMAP_H #define _ASM_S390_GMAP_H +/* Generic bits for GMAP notification on DAT table entry changes. */ +#define GMAP_NOTIFY_SHADOW 0x2 +#define GMAP_NOTIFY_MPROT 0x1 + /** * struct gmap_struct - guest address space * @list: list head for the mm->context gmap list |