linux-kernel - [PATCH 5.16 069/121] of/fdt: move elfcorehdr reservation early for crash dump kernel

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Message-Id: <20220314112746.049884876@linuxfoundation.org>
Date:   Mon, 14 Mar 2022 12:54:12 +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, Nikhil Gupta <nikhil.gupta@....com>,
        Rob Herring <robh@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 069/121] of/fdt: move elfcorehdr reservation early for crash dump kernel

From: Nikhil Gupta <nikhil.gupta@....com>

[ Upstream commit 132507ed04ce0c5559be04dd378fec4f3bbc00e8 ]

elfcorehdr_addr is fixed address passed to Second kernel which may be conflicted
with potential reserved memory in Second kernel,so fdt_reserve_elfcorehdr() ahead
of fdt_init_reserved_mem() can relieve this situation.

Signed-off-by: Nikhil Gupta <nikhil.gupta@....com>
Signed-off-by: Rob Herring <robh@...nel.org>
Link: https://lore.kernel.org/r/20220128042321.15228-1-nikhil.gupta@nxp.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/of/fdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 7e868e5995b7..f66abb496ed1 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -644,8 +644,8 @@ void __init early_init_fdt_scan_reserved_mem(void)
 	}
 
 	fdt_scan_reserved_mem();
-	fdt_init_reserved_mem();
 	fdt_reserve_elfcorehdr();
+	fdt_init_reserved_mem();
 }
 
 /**
-- 
2.34.1