linux-kernel - [PATCH 5.10 25/42] arm64: mm: Move zone_dma_bits initialization into zone_sizes

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Message-Id: <20210308122719.366047742@linuxfoundation.org>
Date:   Mon,  8 Mar 2021 13:30:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Jeremy Linton <jeremy.linton@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Jing Xiangfeng <jingxiangfeng@...wei.com>
Subject: [PATCH 5.10 25/42] arm64: mm: Move zone_dma_bits initialization into zone_sizes_init()

From: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>

commit 9804f8c69b04a39d0ba41d19e6bdc6aa91c19725 upstream

zone_dma_bits's initialization happens earlier that it's actually
needed, in arm64_memblock_init(). So move it into the more suitable
zone_sizes_init().

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Tested-by: Jeremy Linton <jeremy.linton@....com>
Link: https://lore.kernel.org/r/20201119175400.9995-3-nsaenzjulienne@suse.de
Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Cc: <stable@...r.kernel.org>
Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/arm64/mm/init.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -190,6 +190,8 @@ static void __init zone_sizes_init(unsig
 	unsigned long max_zone_pfns[MAX_NR_ZONES]  = {0};
 
 #ifdef CONFIG_ZONE_DMA
+	zone_dma_bits = ARM64_ZONE_DMA_BITS;
+	arm64_dma_phys_limit = max_zone_phys(zone_dma_bits);
 	max_zone_pfns[ZONE_DMA] = PFN_DOWN(arm64_dma_phys_limit);
 #endif
 #ifdef CONFIG_ZONE_DMA32
@@ -376,11 +378,6 @@ void __init arm64_memblock_init(void)
 
 	early_init_fdt_scan_reserved_mem();
 
-	if (IS_ENABLED(CONFIG_ZONE_DMA)) {
-		zone_dma_bits = ARM64_ZONE_DMA_BITS;
-		arm64_dma_phys_limit = max_zone_phys(ARM64_ZONE_DMA_BITS);
-	}
-
 	if (IS_ENABLED(CONFIG_ZONE_DMA32))
 		arm64_dma32_phys_limit = max_zone_phys(32);
 	else