The patch titled
Subject: sh: move the ARCH_DMA_MINALIGN definition to asm/cache.h
has been added to the -mm mm-unstable branch. Its filename is
sh-move-the-arch_dma_minalign-definition-to-asm-cacheh.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/sh-move-the-arch_dma_minalign-definition-to-asm-cacheh.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Catalin Marinas <catalin.marinas@xxxxxxx>
Subject: sh: move the ARCH_DMA_MINALIGN definition to asm/cache.h
Date: Tue, 13 Jun 2023 16:52:45 +0100
The sh architecture defines ARCH_DMA_MINALIGN in asm/page.h. Move it to
asm/cache.h to allow a generic ARCH_DMA_MINALIGN definition in
linux/cache.h without redefine errors/warnings.
Link: https://lkml.kernel.org/r/20230613155245.1228274-4-catalin.marinas@xxxxxxx
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: kernel test robot <lkp@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/sh/include/asm/cache.h | 6 ++++++
arch/sh/include/asm/page.h | 6 ------
2 files changed, 6 insertions(+), 6 deletions(-)
--- a/arch/sh/include/asm/cache.h~sh-move-the-arch_dma_minalign-definition-to-asm-cacheh
+++ a/arch/sh/include/asm/cache.h
@@ -14,6 +14,12 @@
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+/*
+ * Some drivers need to perform DMA into kmalloc'ed buffers
+ * and so we have to increase the kmalloc minalign for this.
+ */
+#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
+
#define __read_mostly __section(".data..read_mostly")
#ifndef __ASSEMBLY__
--- a/arch/sh/include/asm/page.h~sh-move-the-arch_dma_minalign-definition-to-asm-cacheh
+++ a/arch/sh/include/asm/page.h
@@ -174,10 +174,4 @@ typedef struct page *pgtable_t;
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
-/*
- * Some drivers need to perform DMA into kmalloc'ed buffers
- * and so we have to increase the kmalloc minalign for this.
- */
-#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
-
#endif /* __ASM_SH_PAGE_H */
_
Patches currently in -mm which might be from catalin.marinas@xxxxxxx are
mm-slab-decouple-arch_kmalloc_minalign-from-arch_dma_minalign.patch
dma-allow-dma_get_cache_alignment-to-be-overridden-by-the-arch-code.patch
mm-slab-simplify-create_kmalloc_cache-args-and-make-it-static.patch
mm-slab-limit-kmalloc-minimum-alignment-to-dma_get_cache_alignment.patch
drivers-base-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch
drivers-gpu-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch
drivers-usb-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch
drivers-spi-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch
dm-crypt-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch
iio-core-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch
arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size.patch
dma-mapping-force-bouncing-if-the-kmalloc-size-is-not-cache-line-aligned.patch
iommu-dma-force-bouncing-if-the-size-is-not-cacheline-aligned.patch
mm-slab-reduce-the-kmalloc-minimum-alignment-if-dma-bouncing-possible.patch
arm64-enable-arch_want_kmalloc_dma_bounce-for-arm64.patch
powerpc-move-the-arch_dma_minalign-definition-to-asm-cacheh.patch
microblaze-move-the-arch_dmaslab_minalign-definitions-to-asm-cacheh.patch
sh-move-the-arch_dma_minalign-definition-to-asm-cacheh.patch
