diff --git a/patch/kernel/archive/rockchip-6.6/patches.armbian/0010-arm64-swiotlb-Reduce-the-default-size-if-no-ZONE_DMA-bouncing-needed.patch b/patch/kernel/archive/rockchip-6.6/patches.armbian/0010-arm64-swiotlb-Reduce-the-default-size-if-no-ZONE_DMA-bouncing-needed.patch deleted file mode 100644 index c31c4414fb..0000000000 --- a/patch/kernel/archive/rockchip-6.6/patches.armbian/0010-arm64-swiotlb-Reduce-the-default-size-if-no-ZONE_DMA-bouncing-needed.patch +++ /dev/null @@ -1,56 +0,0 @@ -From 7648741002eeb851ceb394864253445b77ea3d25 Mon Sep 17 00:00:00 2001 -From: Catalin Marinas -Date: Wed, 10 Apr 2024 08:25:37 -0400 -Subject: [PATCH] arm64: swiotlb: Reduce the default size if no ZONE_DMA - bouncing needed - -With CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC enabled, the arm64 kernel still -allocates the default SWIOTLB buffer (64MB) even if ZONE_DMA is disabled -or all the RAM fits into this zone. However, this potentially wastes a -non-negligible amount of memory on platforms with little RAM. - -Reduce the SWIOTLB size to 1MB per 1GB of RAM if only needed for -kmalloc() buffer bouncing. - -Signed-off-by: Catalin Marinas -Suggested-by: Ross Burton -Cc: Ross Burton -Cc: Will Deacon -Reviewed-by: Robin Murphy ---- - arch/arm64/mm/init.c | 11 ++++++++++- - 1 file changed, 10 insertions(+), 1 deletion(-) - -diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c -index 8a0f8604348b..8deec68028ac 100644 ---- a/arch/arm64/mm/init.c -+++ b/arch/arm64/mm/init.c -@@ -16,6 +16,7 @@ - #include - #include - #include -+#include - #include - #include - #include -@@ -493,8 +494,16 @@ void __init mem_init(void) - { - bool swiotlb = max_pfn > PFN_DOWN(arm64_dma_phys_limit); - -- if (IS_ENABLED(CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC)) -+ if (IS_ENABLED(CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC) && !swiotlb) { -+ /* -+ * If no bouncing needed for ZONE_DMA, reduce the swiotlb -+ * buffer for kmalloc() bouncing to 1MB per 1GB of RAM. -+ */ -+ unsigned long size = -+ DIV_ROUND_UP(memblock_phys_mem_size(), 1024); -+ swiotlb_adjust_size(min(swiotlb_size_or_default(), size)); - swiotlb = true; -+ } - - swiotlb_init(swiotlb, SWIOTLB_VERBOSE); - --- -2.39.2 -