linux/arch/arm64/mm
Catalin Marinas a1e50a8225 arm64: Increase the swiotlb buffer size 64MB
With commit 3690951fc6 (arm64: Use swiotlb late initialisation), the
swiotlb buffer size is limited to MAX_ORDER_NR_PAGES. However, there are
platforms with 32-bit only devices that require bounce buffering via
swiotlb. This patch changes the swiotlb initialisation to an early 64MB
memblock allocation. In order to get the swiotlb buffer correctly
allocated (via memblock_virt_alloc_low_nopanic), this patch also defines
ARCH_LOW_ADDRESS_LIMIT to the maximum physical address capable of 32-bit
DMA.

Reported-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-27 18:05:55 +00:00
..
cache.S arm64: compat: align cacheflush syscall with arch/arm 2014-12-01 13:31:12 +00:00
context.c arm64: Process management 2012-09-17 13:41:58 +01:00
copypage.c arm64: export __cpu_{clear,copy}_user_page functions 2014-07-08 17:30:51 +01:00
dma-mapping.c arm64: Increase the swiotlb buffer size 64MB 2015-02-27 18:05:55 +00:00
dump.c arm64 updates for 3.20: 2015-02-11 18:03:54 -08:00
extable.c arm64: MMU fault handling and page table management 2012-09-17 13:41:57 +01:00
fault.c arm64: move to ESR_ELx macros 2015-01-15 12:24:15 +00:00
flush.c arm64: mm: enable RCU fast_gup 2014-10-09 22:26:01 -04:00
hugetlbpage.c mm/hugetlb: reduce arch dependent code around follow_huge_* 2015-02-11 17:06:01 -08:00
init.c arm64: Increase the swiotlb buffer size 64MB 2015-02-27 18:05:55 +00:00
ioremap.c arm64: add ioremap physical address information 2015-01-23 15:29:06 +00:00
Makefile arm64: add support to dump the kernel page tables 2014-11-26 17:19:18 +00:00
mm.h arm64: add better page protections to arm64 2015-01-22 14:54:29 +00:00
mmap.c arm64/mm: Remove hack in mmap randomize layout 2014-11-18 16:58:15 +00:00
mmu.c arm64: Fix section mismatch on alloc_init_p[mu]d() 2015-01-29 17:33:35 +00:00
pageattr.c arm64: pageattr: Correctly adjust unaligned start addresses 2014-09-12 16:34:50 +01:00
pgd.c arm64: pgalloc: consistently use PGALLOC_GFP 2014-11-20 12:05:18 +00:00
proc-macros.S arm64: mm: use ubfm for dcache_line_size 2014-01-22 16:23:58 +00:00
proc.S arm64: kernel: remove ARM64_CPU_SUSPEND config option 2015-01-27 11:35:33 +00:00