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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-07-01 16:36:04 +0400 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-08-26 12:09:03 +0400 |
| commit | c6c956b80bdf151cf41d3e7e5c54755d930a212c (patch) | |
| tree | 2f105bb983034a098f6f26eb1564397273ba39b6 /arch/s390/include/asm/pgtable.h | |
| parent | 527e30b41d8b86e9ae7f5b740de416958c0e574e (diff) | |
| download | linux-c6c956b80bdf151cf41d3e7e5c54755d930a212c.tar.xz | |
KVM: s390/mm: support gmap page tables with less than 5 levels
Add an addressing limit to the gmap address spaces and only allocate
the page table levels that are needed for the given limit. The limit
is fixed and can not be changed after a gmap has been created.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pgtable.h')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 9bfdbca14f95..7705180e906d 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -808,6 +808,7 @@ struct gmap { spinlock_t guest_table_lock; unsigned long *table; unsigned long asce; + unsigned long asce_end; void *private; bool pfault_enabled; }; @@ -844,7 +845,7 @@ struct gmap_notifier { void (*notifier_call)(struct gmap *gmap, unsigned long gaddr); }; -struct gmap *gmap_alloc(struct mm_struct *mm); +struct gmap *gmap_alloc(struct mm_struct *mm, unsigned long limit); void gmap_free(struct gmap *gmap); void gmap_enable(struct gmap *gmap); void gmap_disable(struct gmap *gmap); |