linux-kernel - [PATCH 07/10] x86: jailhouse: Silence ACPI warning

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Message-Id: <35a86d075c7235cad96bb2cc8b40e8dd89ceb9b9.1510817211.git.jan.kiszka@siemens.com>
Date:   Thu, 16 Nov 2017 08:26:49 +0100
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     x86@...nel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        jailhouse-dev@...glegroups.com
Subject: [PATCH 07/10] x86: jailhouse: Silence ACPI warning

From: Jan Kiszka <jan.kiszka@...mens.com>

Jailhouse support does not depend on ACPI, and does not even use it. But
if it should be enabled, avoid warning about its absence in the
platform.

Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
---
 arch/x86/kernel/jailhouse.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c
index cfe8ae0c33a2..c1ed7fcd7bfa 100644
--- a/arch/x86/kernel/jailhouse.c
+++ b/arch/x86/kernel/jailhouse.c
@@ -180,6 +180,12 @@ static void __init jailhouse_init_platform(void)
 	smp_found_config = 1;
 
 	early_memunmap(data, sizeof(*data));
+
+	/*
+	 * Avoid that the kernel complains about missing ACPI tables - there
+	 * are none in a non-root cell.
+	 */
+	disable_acpi();
 }
 
 bool jailhouse_paravirt(void)
-- 
2.12.3