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| author | Takashi Iwai <tiwai@suse.de> | 2014-07-14 18:13:41 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-07-14 18:13:41 +0200 |
| commit | 03fe805a098422d27cbbbad29a54ff1349da3622 (patch) | |
| tree | 0db9cc9a701203ddcee58e5b907d4fb8ad31b421 /arch/arm64/mm/init.c | |
| parent | ALSA: hda - add capture mute led support in led_power_filter (diff) | |
| parent | ALSA: pcm: Add timestamp type to sw_params (diff) | |
| download | linux-03fe805a098422d27cbbbad29a54ff1349da3622.tar.xz linux-03fe805a098422d27cbbbad29a54ff1349da3622.zip | |
Merge branch 'topic/monotonic' into for-next
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 091d428d64ac..f43db8a69262 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -71,7 +71,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) /* 4GB maximum for 32-bit only capable devices */ if (IS_ENABLED(CONFIG_ZONE_DMA)) { unsigned long max_dma_phys = - (unsigned long)dma_to_phys(NULL, DMA_BIT_MASK(32) + 1); + (unsigned long)(dma_to_phys(NULL, DMA_BIT_MASK(32)) + 1); max_dma = max(min, min(max, max_dma_phys >> PAGE_SHIFT)); zone_size[ZONE_DMA] = max_dma - min; } @@ -126,6 +126,8 @@ static void arm64_memory_present(void) void __init arm64_memblock_init(void) { + phys_addr_t dma_phys_limit = 0; + /* Register the kernel text, kernel data and initrd with memblock */ memblock_reserve(__pa(_text), _end - _text); #ifdef CONFIG_BLK_DEV_INITRD @@ -141,7 +143,11 @@ void __init arm64_memblock_init(void) memblock_reserve(__pa(idmap_pg_dir), IDMAP_DIR_SIZE); early_init_fdt_scan_reserved_mem(); - dma_contiguous_reserve(0); + + /* 4GB maximum for 32-bit only capable devices */ + if (IS_ENABLED(CONFIG_ZONE_DMA)) + dma_phys_limit = dma_to_phys(NULL, DMA_BIT_MASK(32)) + 1; + dma_contiguous_reserve(dma_phys_limit); memblock_allow_resize(); memblock_dump_all(); |