openwrt/target/linux/bcm27xx/patches-5.4/950-0440-arm64-mm-use-arm64_dma_phys_limit-instead-of-calling.patch
John Audia d33cd383ed kernel: bump 5.4 to 5.4.94
All modification made by update_kernel.sh in a fresh clone without
existing toolchains.

Build-tested: bcm27xx/bcm2711, ipq806x/R7800,
Run-tested: ipq806x/R7800

No dmesg regressions, everything functional

Signed-off-by: John Audia <graysky@archlinux.us>
2021-02-01 19:10:43 +01:00

31 lines
1.1 KiB
Diff

From c17f622cbb33332a305ef383506740d3d01aa831 Mon Sep 17 00:00:00 2001
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Date: Wed, 11 Sep 2019 20:25:43 +0200
Subject: [PATCH] arm64: mm: use arm64_dma_phys_limit instead of
calling max_zone_dma_phys()
commit ae970dc096b2d39f65f2e18d142e3978dc9ee1c7 upstream.
By the time we call zones_sizes_init() arm64_dma_phys_limit already
contains the result of max_zone_dma_phys(). We use the variable instead
of calling the function directly to save some precious cpu time.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---
arch/arm64/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -181,7 +181,7 @@ static void __init zone_sizes_init(unsig
unsigned long max_zone_pfns[MAX_NR_ZONES] = {0};
#ifdef CONFIG_ZONE_DMA32
- max_zone_pfns[ZONE_DMA32] = PFN_DOWN(max_zone_dma_phys());
+ max_zone_pfns[ZONE_DMA32] = PFN_DOWN(arm64_dma_phys_limit);
#endif
max_zone_pfns[ZONE_NORMAL] = max;