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| author | Dominik Dingel <dingel@linux.vnet.ibm.com> | 2014-01-29 16:02:32 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-04-22 09:36:24 +0200 |
| commit | d4cb11340be6a1613d40d2b546cb111ea2547066 (patch) | |
| tree | a9f8509c2a9ca3ae530e848995a59961d3fed995 /arch/s390/include/asm | |
| parent | 65eef33550f68e9a7f7d2dc64da94fb6cb85be2c (diff) | |
| download | linux-stable-d4cb11340be6a1613d40d2b546cb111ea2547066.tar.gz linux-stable-d4cb11340be6a1613d40d2b546cb111ea2547066.tar.bz2 linux-stable-d4cb11340be6a1613d40d2b546cb111ea2547066.zip | |
KVM: s390: Clear storage keys
page_table_reset_pgste() already does a complete page table walk to
reset the pgste. Enhance it to initialize the storage keys to
PAGE_DEFAULT_KEY if requested by the caller. This will be used
for lazy storage key handling. Also provide an empty stub for
!CONFIG_PGSTE
Lets adopt the current code (diag 308) to not clear the keys.
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/pgalloc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h index 884017cbfa9f..9e18a61d3df3 100644 --- a/arch/s390/include/asm/pgalloc.h +++ b/arch/s390/include/asm/pgalloc.h @@ -22,7 +22,8 @@ unsigned long *page_table_alloc(struct mm_struct *, unsigned long); void page_table_free(struct mm_struct *, unsigned long *); void page_table_free_rcu(struct mmu_gather *, unsigned long *); -void page_table_reset_pgste(struct mm_struct *, unsigned long, unsigned long); +void page_table_reset_pgste(struct mm_struct *, unsigned long, unsigned long, + bool init_skey); int set_guest_storage_key(struct mm_struct *mm, unsigned long addr, unsigned long key, bool nq); |