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mm/slab: allows kmalloc min size independent on arch dma min alignment when CONFIG_ROCKCHIP_KMALLOC_NO_USE_ARCH_DMA_MINALIGN=y

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CONFIG_ROCKCHIP_MINI_KERNEL enabled in some project which perform DMA
into kmalloc area that may cause data corrupt. Use a independent config
CONFIG_ROCKCHIP_KMALLOC_NO_USE_ARCH_DMA_MINALIGN instead of CONFIG_ROCKCHIP_MINI_KERNEL

Fixes: c97fea6ed1 ("slab: allows kmalloc min size independent on arch dma min alignment when CONFIG_ROCKCHIP_MINI_KERNEL=y")
Change-Id: Idd36490d695a0f2910d2b453228688405efdd43a
Signed-off-by: Simon Xue <xxm@rock-chips.com>
This commit is contained in:
Simon Xue
2024-07-23 17:09:43 +08:00
committed by Tao Huang
parent c3c6ec4a49
commit 73d746eecf
1 changed files with 1 additions and 1 deletions
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2
include/linux/slab.h
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@@ -221,7 +221,7 @@ void kmem_dump_obj(void *object);
* alignment larger than the alignment of a 64-bit integer.
* Setting ARCH_DMA_MINALIGN in arch headers allows that.
*/
#if defined(ARCH_DMA_MINALIGN) && ARCH_DMA_MINALIGN > 8 && !IS_ENABLED(CONFIG_ROCKCHIP_MINI_KERNEL)
#if defined(ARCH_DMA_MINALIGN) && ARCH_DMA_MINALIGN > 8 && !IS_ENABLED(CONFIG_ROCKCHIP_KMALLOC_NO_USE_ARCH_DMA_MINALIGN)
#define ARCH_KMALLOC_MINALIGN ARCH_DMA_MINALIGN
#define KMALLOC_MIN_SIZE ARCH_DMA_MINALIGN
#define KMALLOC_SHIFT_LOW ilog2(ARCH_DMA_MINALIGN)