linux-kernel - [PATCH] arm64: remove kaslr-seed node when it had used

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Message-ID: <TYSPR04MB7084AFDB414AA7AE49A02D608AB2A@TYSPR04MB7084.apcprd04.prod.outlook.com>
Date:   Tue, 14 Nov 2023 21:55:51 +0800
From:   Enlin Mu <enlin.mu@...look.com>
To:     catalin.marinas@....com, will@...nel.org, enlin.mu@...soc.com,
        enlinmu@...il.com, linux-arm-kernel@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: remove kaslr-seed node when it had used

From: Enlin Mu <enlin.mu@...soc.com>

If this node value is zero,it means that kaslr is enabled.
Removing it for the system safe,nobody knows if this feature is
enable or not.

Signed-off-by: Enlin Mu <enlin.mu@...soc.com>
---
 arch/arm64/kernel/pi/kaslr_early.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/pi/kaslr_early.c b/arch/arm64/kernel/pi/kaslr_early.c
index 17bff6e399e4..bc35d4ed84b7 100644
--- a/arch/arm64/kernel/pi/kaslr_early.c
+++ b/arch/arm64/kernel/pi/kaslr_early.c
@@ -81,7 +81,7 @@ static u64 get_kaslr_seed(void *fdt)
 		return 0;
 
 	ret = fdt64_to_cpu(*prop);
-	*prop = 0;
+	fdt_nop_property(fdt, node, "kaslr-seed");
 	return ret;
 }
 
-- 
2.25.1