The quilt patch titled
Subject: arm64: allow kmalloc() caches aligned to the smaller cache_line_size()
has been removed from the -mm tree. Its filename was
arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Catalin Marinas <catalin.marinas@xxxxxxx>
Subject: arm64: allow kmalloc() caches aligned to the smaller cache_line_size()
Date: Mon, 12 Jun 2023 16:31:55 +0100
On arm64, ARCH_DMA_MINALIGN is 128, larger than the cache line size on
most of the current platforms (typically 64). Define
ARCH_KMALLOC_MINALIGN to 8 (the default for architectures without their
own ARCH_DMA_MINALIGN) and override dma_get_cache_alignment() to return
cache_line_size(), probed at run-time. The kmalloc() caches will be
limited to the cache line size. This will allow the additional
kmalloc-{64,192} caches on most arm64 platforms.
Link: https://lkml.kernel.org/r/20230612153201.554742-12-catalin.marinas@xxxxxxx
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Tested-by: Isaac J. Manjarres <isaacmanjarres@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Alasdair Kergon <agk@xxxxxxxxxx>
Cc: Ard Biesheuvel <ardb@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
Cc: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Lars-Peter Clausen <lars@xxxxxxxxxx>
Cc: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Marc Zyngier <maz@xxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Mike Snitzer <snitzer@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
Cc: Robin Murphy <robin.murphy@xxxxxxx>
Cc: Saravana Kannan <saravanak@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/cache.h | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/arm64/include/asm/cache.h~arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size
+++ a/arch/arm64/include/asm/cache.h
@@ -33,6 +33,7 @@
* the CPU.
*/
#define ARCH_DMA_MINALIGN (128)
+#define ARCH_KMALLOC_MINALIGN (8)
#ifndef __ASSEMBLY__
@@ -90,6 +91,8 @@ static inline int cache_line_size_of_cpu
int cache_line_size(void);
+#define dma_get_cache_alignment cache_line_size
+
/*
* Read the effective value of CTR_EL0.
*
_
Patches currently in -mm which might be from catalin.marinas@xxxxxxx are
