mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
26 lines
872 B
Diff
26 lines
872 B
Diff
From 2722f08c4c59901bd506184e2dcbbbd532aef0b3 Mon Sep 17 00:00:00 2001
|
|
From: Andrei Gherzan <andrei@balena.io>
|
|
Date: Tue, 16 Jul 2019 13:28:22 +0100
|
|
Subject: [PATCH 707/806] arm64/mm: Limit the DMA zone for arm64
|
|
|
|
On RaspberryPi, only the first 1Gb can be used for DMA[1].
|
|
|
|
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2019-July/665986.html
|
|
|
|
Signed-off-by: Andrei Gherzan <andrei@balena.io>
|
|
---
|
|
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
|
|
@@ -224,7 +224,7 @@ static void __init reserve_elfcorehdr(vo
|
|
static phys_addr_t __init max_zone_dma_phys(void)
|
|
{
|
|
phys_addr_t offset = memblock_start_of_DRAM() & GENMASK_ULL(63, 32);
|
|
- return min(offset + (1ULL << 32), memblock_end_of_DRAM());
|
|
+ return min(offset + (1ULL << 30), memblock_end_of_DRAM());
|
|
}
|
|
|
|
#ifdef CONFIG_NUMA
|