linux-kernel - [PATCH 1/2] arm64/acpi: panic when failed to init acpi table with acpi=force option

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Message-Id: <20241125145848.506347-2-yeoreum.yun@arm.com>
Date: Mon, 25 Nov 2024 14:58:47 +0000
From: Yeoreum Yun <yeoreum.yun@....com>
To: catalin.marinas@....com,
	will@...nel.org,
	broonie@...nel.org,
	sudeep.holla@....com,
	guohanjun@...wei.com,
	gshan@...hat.com,
	prarit@...hat.com,
	Jonathan.Cameron@...wei.com,
	dwmw@...zon.co.uk,
	ardb@...nel.org,
	hagarhem@...zon.com
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-efi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	nd@....com,
	Yeoreum Yun <yeoreum.yun@....com>
Subject: [PATCH 1/2] arm64/acpi: panic when failed to init acpi table with acpi=force option

when the acpi=force option is used,
the system does not fall back to the device tree (DT).
If it fails to initialize the ACPI table, it cannot proceed further.
In such cases, the system should invoke panic() to avoid contradicting
the user's explicit intent, as failing or
proceeding with unintended behavior would violate their wishes.

Signed-off-by: Yeoreum Yun <yeoreum.yun@....com>
---
 arch/arm64/kernel/acpi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index e6f66491fbe9..efdf24ed5c3e 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -225,6 +225,8 @@ void __init acpi_boot_table_init(void)
 		pr_err("Failed to init ACPI tables\n");
 		if (!param_acpi_force)
 			disable_acpi();
+		else
+			panic("Failed to boot with ACPI tables\n");
 	}

 done:
--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}