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| author | Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2019-10-14 20:31:03 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-11-01 09:41:18 +0000 |
| commit | 8b5369ea580964dbc982781bfb9fb93459fc5e8d (patch) | |
| tree | 55f4d7308e5fb1f4c5df396e637ba08bfa2daf46 /arch/s390 | |
| parent | 4686da5140c18c84ca01a8ab994571d832c63398 (diff) | |
| download | linux-8b5369ea580964dbc982781bfb9fb93459fc5e8d.tar.gz linux-8b5369ea580964dbc982781bfb9fb93459fc5e8d.tar.bz2 linux-8b5369ea580964dbc982781bfb9fb93459fc5e8d.zip | |
dma/direct: turn ARCH_ZONE_DMA_BITS into a variable
Some architectures, notably ARM, are interested in tweaking this
depending on their runtime DMA addressing limitations.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/page.h | 2 | ||||
| -rw-r--r-- | arch/s390/mm/init.c | 1 |
2 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index 823578c6b9e2..a4d38092530a 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -177,8 +177,6 @@ static inline int devmem_is_allowed(unsigned long pfn) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) -#define ARCH_ZONE_DMA_BITS 31 - #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index a124f19f7b3c..f0ce22220565 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -118,6 +118,7 @@ void __init paging_init(void) sparse_memory_present_with_active_regions(MAX_NUMNODES); sparse_init(); + zone_dma_bits = 31; memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS); max_zone_pfns[ZONE_NORMAL] = max_low_pfn; |