8b150478ae
Change the phys_mem_access_prot() function to take a pfn instead of an address. This allows mmap64() to work on /dev/mem for addresses above 4G on 32-bit architectures. We start with a pfn in mmap_mem(), so there's no need to convert to an address; in fact, it's actively bad, since the conversion can overflow when the address is above 4G. Similarly fix the ppc32 page_is_ram() function to avoid a conversion to an address by directly comparing to max_pfn. Working with max_pfn instead of high_memory fixes page_is_ram() to give the right answer for highmem pages. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org> |
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| .. | ||
| 4xx_mmu.c | ||
| 44x_mmu.c | ||
| fault.c | ||
| fsl_booke_mmu.c | ||
| hash_low_32.S | ||
| hash_low_64.S | ||
| hash_native_64.c | ||
| hash_utils_64.c | ||
| hugetlbpage.c | ||
| imalloc.c | ||
| init_32.c | ||
| init_64.c | ||
| lmb.c | ||
| Makefile | ||
| mem.c | ||
| mmap.c | ||
| mmu_context_32.c | ||
| mmu_context_64.c | ||
| mmu_decl.h | ||
| numa.c | ||
| pgtable_32.c | ||
| pgtable_64.c | ||
| ppc_mmu_32.c | ||
| slb_low.S | ||
| slb.c | ||
| stab.c | ||
| tlb_32.c | ||
| tlb_64.c | ||