diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2016-11-30 09:52:00 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-12-02 06:38:29 +0300 |
| commit | d7baee6901b34c4895eb78efdbf13a49079d7404 (patch) | |
| tree | 82e581d4b82571bb48672167ebd1a94532f60ad3 /arch/powerpc/include/asm/mmu_context.h | |
| parent | 88f54a3581eb9deaa3bd1aade40aef266d782385 (diff) | |
| download | linux-d7baee6901b34c4895eb78efdbf13a49079d7404.tar.xz | |
powerpc/iommu: Stop using @current in mm_iommu_xxx
This changes mm_iommu_xxx helpers to take mm_struct as a parameter
instead of getting it from @current which in some situations may
not have a valid reference to mm.
This changes helpers to receive @mm and moves all references to @current
to the caller, including checks for !current and !current->mm;
checks in mm_iommu_preregistered() are removed as there is no caller
yet.
This moves the mm_iommu_adjust_locked_vm() call to the caller as
it receives mm_iommu_table_group_mem_t but it needs mm.
This should cause no behavioral change.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/mmu_context.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 424844bc2a57..b9e3f0aca261 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -19,16 +19,18 @@ extern void destroy_context(struct mm_struct *mm); struct mm_iommu_table_group_mem_t; extern int isolate_lru_page(struct page *page); /* from internal.h */ -extern bool mm_iommu_preregistered(void); -extern long mm_iommu_get(unsigned long ua, unsigned long entries, +extern bool mm_iommu_preregistered(struct mm_struct *mm); +extern long mm_iommu_get(struct mm_struct *mm, + unsigned long ua, unsigned long entries, struct mm_iommu_table_group_mem_t **pmem); -extern long mm_iommu_put(struct mm_iommu_table_group_mem_t *mem); +extern long mm_iommu_put(struct mm_struct *mm, + struct mm_iommu_table_group_mem_t *mem); extern void mm_iommu_init(struct mm_struct *mm); extern void mm_iommu_cleanup(struct mm_struct *mm); -extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup(unsigned long ua, - unsigned long size); -extern struct mm_iommu_table_group_mem_t *mm_iommu_find(unsigned long ua, - unsigned long entries); +extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup(struct mm_struct *mm, + unsigned long ua, unsigned long size); +extern struct mm_iommu_table_group_mem_t *mm_iommu_find(struct mm_struct *mm, + unsigned long ua, unsigned long entries); extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem, unsigned long ua, unsigned long *hpa); extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem); |