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| author | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-21 23:15:10 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-21 23:15:10 +1100 |
| commit | d0055df0c9c1471c389197a69f43e300185a75aa (patch) | |
| tree | 7a1c253162f9ea99bf544fac4ae9219c398cae3f /arch/powerpc/mm/mem.c | |
| parent | 637cfeb9f99ca097747139a5419bc23e0b885655 (diff) | |
| parent | 4a605e2d1a69f5aea06da10d81e22802a90812a3 (diff) | |
| download | linux-d0055df0c9c1471c389197a69f43e300185a75aa.tar.gz | |
Merge branch 'topic/dma' into next
Merge hch's big DMA rework series. This is in a topic branch in case he
wants to merge it to minimise conflicts.
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 81f251fc4169f..f6787f90e1585 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -69,15 +69,12 @@ pte_t *kmap_pte; EXPORT_SYMBOL(kmap_pte); pgprot_t kmap_prot; EXPORT_SYMBOL(kmap_prot); -#define TOP_ZONE ZONE_HIGHMEM static inline pte_t *virt_to_kpte(unsigned long vaddr) { return pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), vaddr), vaddr), vaddr); } -#else -#define TOP_ZONE ZONE_NORMAL #endif pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, @@ -229,25 +226,6 @@ static int __init mark_nonram_nosave(void) static unsigned long max_zone_pfns[MAX_NR_ZONES]; /* - * Find the least restrictive zone that is entirely below the - * specified pfn limit. Returns < 0 if no suitable zone is found. - * - * pfn_limit must be u64 because it can exceed 32 bits even on 32-bit - * systems -- the DMA limit can be higher than any possible real pfn. - */ -int dma_pfn_limit_to_zone(u64 pfn_limit) -{ - int i; - - for (i = TOP_ZONE; i >= 0; i--) { - if (max_zone_pfns[i] <= pfn_limit) - return i; - } - - return -EPERM; -} - -/* * paging_init() sets up the page tables - in fact we've already done this. */ void __init paging_init(void) |