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| author | Dave Airlie <airlied@redhat.com> | 2016-03-14 00:42:34 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2016-03-14 00:46:02 +0100 |
| commit | 9b61c0fcdf0cfd20a85d9856d46142e7f297de0a (patch) | |
| tree | d4abe6aa3f4e1e088f9da1d0597e078b1fe58912 /arch/s390/include/asm/pgalloc.h | |
| parent | Merge branch 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux into... (diff) | |
| parent | Merge tag 'drm-intel-fixes-2016-03-11' of git://anongit.freedesktop.org/drm-i... (diff) | |
| download | linux-9b61c0fcdf0cfd20a85d9856d46142e7f297de0a.tar.xz linux-9b61c0fcdf0cfd20a85d9856d46142e7f297de0a.zip | |
Merge drm-fixes into drm-next.
Nouveau wanted this to avoid some worse conflicts when I merge that.
Diffstat (limited to 'arch/s390/include/asm/pgalloc.h')
| -rw-r--r-- | arch/s390/include/asm/pgalloc.h | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h index 7b7858f158b4..d7cc79fb6191 100644 --- a/arch/s390/include/asm/pgalloc.h +++ b/arch/s390/include/asm/pgalloc.h @@ -100,12 +100,26 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) static inline pgd_t *pgd_alloc(struct mm_struct *mm) { - spin_lock_init(&mm->context.list_lock); - INIT_LIST_HEAD(&mm->context.pgtable_list); - INIT_LIST_HEAD(&mm->context.gmap_list); - return (pgd_t *) crst_table_alloc(mm); + unsigned long *table = crst_table_alloc(mm); + + if (!table) + return NULL; + if (mm->context.asce_limit == (1UL << 31)) { + /* Forking a compat process with 2 page table levels */ + if (!pgtable_pmd_page_ctor(virt_to_page(table))) { + crst_table_free(mm, table); + return NULL; + } + } + return (pgd_t *) table; +} + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + if (mm->context.asce_limit == (1UL << 31)) + pgtable_pmd_page_dtor(virt_to_page(pgd)); + crst_table_free(mm, (unsigned long *) pgd); } -#define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd) static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte) |