diff options
| author | Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2019-10-14 21:31:03 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-11-01 12:41:18 +0300 |
| commit | 8b5369ea580964dbc982781bfb9fb93459fc5e8d (patch) | |
| tree | 55f4d7308e5fb1f4c5df396e637ba08bfa2daf46 /include/linux/dma-direct.h | |
| parent | 4686da5140c18c84ca01a8ab994571d832c63398 (diff) | |
| download | linux-8b5369ea580964dbc982781bfb9fb93459fc5e8d.tar.xz | |
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 'include/linux/dma-direct.h')
| -rw-r--r-- | include/linux/dma-direct.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index adf993a3bd58..d03af3605460 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -5,6 +5,8 @@ #include <linux/dma-mapping.h> #include <linux/mem_encrypt.h> +extern unsigned int zone_dma_bits; + #ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA #include <asm/dma-direct.h> #else |