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authorChristoph Hellwig <hch@lst.de>2018-11-09 09:51:00 +0100
committerChristoph Hellwig <hch@lst.de>2018-12-06 07:04:56 -0800
commit7c703e54cc71df5baa962e24a5663d88173bba5c (patch)
treecaf54e62471ee960c1143a58d246d2e63bd35616 /arch/arm64/Kconfig
parentdma-mapping: return an error code from dma_mapping_error (diff)
downloadlinux-dev-7c703e54cc71df5baa962e24a5663d88173bba5c.tar.xz
linux-dev-7c703e54cc71df5baa962e24a5663d88173bba5c.zip
arch: switch the default on ARCH_HAS_SG_CHAIN
These days architectures are mostly out of the business of dealing with struct scatterlist at all, unless they have architecture specific iommu drivers. Replace the ARCH_HAS_SG_CHAIN symbol with a ARCH_NO_SG_CHAIN one only enabled for architectures with horrible legacy iommu drivers like alpha and parisc, and conditionally for arm which wants to keep it disable for legacy platforms. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to '')
-rw-r--r--arch/arm64/Kconfig1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 2e645ea693ea..06cf0ef24367 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -23,7 +23,6 @@ config ARM64
select ARCH_HAS_MEMBARRIER_SYNC_CORE
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_MEMORY
- select ARCH_HAS_SG_CHAIN
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_SYNC_DMA_FOR_DEVICE