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authorChristoph Hellwig <hch@lst.de>2018-11-09 11:51:00 +0300
committerChristoph Hellwig <hch@lst.de>2018-12-06 18:04:56 +0300
commit7c703e54cc71df5baa962e24a5663d88173bba5c (patch)
treecaf54e62471ee960c1143a58d246d2e63bd35616 /Documentation/features/io
parentb14b9d25a3c707c85e7e31e15766a71365b52ab7 (diff)
downloadlinux-7c703e54cc71df5baa962e24a5663d88173bba5c.tar.xz
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 'Documentation/features/io')
-rw-r--r--Documentation/features/io/sg-chain/arch-support.txt33
1 files changed, 0 insertions, 33 deletions
diff --git a/Documentation/features/io/sg-chain/arch-support.txt b/Documentation/features/io/sg-chain/arch-support.txt
deleted file mode 100644
index 6554f0372c3f..000000000000
--- a/Documentation/features/io/sg-chain/arch-support.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-#
-# Feature name: sg-chain
-# Kconfig: ARCH_HAS_SG_CHAIN
-# description: arch supports chained scatter-gather lists
-#
- -----------------------
- | arch |status|
- -----------------------
- | alpha: | TODO |
- | arc: | ok |
- | arm: | ok |
- | arm64: | ok |
- | c6x: | TODO |
- | h8300: | TODO |
- | hexagon: | TODO |
- | ia64: | ok |
- | m68k: | TODO |
- | microblaze: | TODO |
- | mips: | TODO |
- | nds32: | TODO |
- | nios2: | TODO |
- | openrisc: | TODO |
- | parisc: | TODO |
- | powerpc: | ok |
- | riscv: | TODO |
- | s390: | ok |
- | sh: | TODO |
- | sparc: | ok |
- | um: | TODO |
- | unicore32: | TODO |
- | x86: | ok |
- | xtensa: | TODO |
- -----------------------