linux-kernel - [tip:x86/platform] x86/jailhouse: Silence ACPI warning

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Message-ID: <tip-5ae4443010b83cce3d55ce5259870e542a7c9551@git.kernel.org>
Date:   Sun, 14 Jan 2018 12:37:56 -0800
From:   tip-bot for Jan Kiszka <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, mingo@...nel.org, linux-kernel@...r.kernel.org,
        hpa@...or.com, jan.kiszka@...mens.com
Subject: [tip:x86/platform] x86/jailhouse: Silence ACPI warning

Commit-ID:  5ae4443010b83cce3d55ce5259870e542a7c9551
Gitweb:     https://git.kernel.org/tip/5ae4443010b83cce3d55ce5259870e542a7c9551
Author:     Jan Kiszka <jan.kiszka@...mens.com>
AuthorDate: Mon, 27 Nov 2017 09:11:51 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Sun, 14 Jan 2018 21:11:56 +0100

x86/jailhouse: Silence ACPI warning

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>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: jailhouse-dev@...glegroups.com
Link: https://lkml.kernel.org/r/939687007cbd7643b02fd330e8616e7e5944063f.1511770314.git.jan.kiszka@siemens.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 b9f116d..54469ef 100644
--- a/arch/x86/kernel/jailhouse.c
+++ b/arch/x86/kernel/jailhouse.c
@@ -125,6 +125,12 @@ static void __init jailhouse_init_platform(void)
 	pr_debug("Jailhouse: PM-Timer IO Port: %#x\n", pmtmr_ioport);
 
 	precalibrated_tsc_khz = setup_data.tsc_khz;
+
+	/*
+	 * Avoid that the kernel complains about missing ACPI tables - there
+	 * are none in a non-root cell.
+	 */
+	disable_acpi();
 }
 
 bool jailhouse_paravirt(void)