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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-05-27 19:57:33 +0300 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-20 10:55:16 +0300 |
| commit | 5b6c963bcef5c3a857e3f8ba84aa9380069fc95f (patch) | |
| tree | ea98bc0e529c3e1b7c305e1710f9ae24d1657752 /arch/s390/include/asm/gmap.h | |
| parent | 4a49443924731823da2e9b3ae9311b74a34e7ed8 (diff) | |
| download | linux-5b6c963bcef5c3a857e3f8ba84aa9380069fc95f.tar.xz | |
s390/mm: allow to check if a gmap shadow is valid
It will be very helpful to have a mechanism to check without any locks
if a given gmap shadow is still valid and matches the given properties.
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/gmap.h')
| -rw-r--r-- | arch/s390/include/asm/gmap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/gmap.h b/arch/s390/include/asm/gmap.h index 752cf47a81ab..c67fb854705e 100644 --- a/arch/s390/include/asm/gmap.h +++ b/arch/s390/include/asm/gmap.h @@ -109,6 +109,7 @@ int gmap_read_table(struct gmap *gmap, unsigned long gaddr, unsigned long *val); struct gmap *gmap_shadow(struct gmap *parent, unsigned long asce, int edat_level); +int gmap_shadow_valid(struct gmap *sg, unsigned long asce, int edat_level); int gmap_shadow_r2t(struct gmap *sg, unsigned long saddr, unsigned long r2t, int fake); int gmap_shadow_r3t(struct gmap *sg, unsigned long saddr, unsigned long r3t, |