2020-05-08 14:52:40 +00:00
|
|
|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
2020-04-23 20:47:21 +00:00
|
|
|
From: Mark Salter <msalter@redhat.com>
|
|
|
|
|
Date: Fri, 11 May 2018 21:01:17 -0400
|
|
|
|
|
Subject: [PATCH] acpi: prefer booting with ACPI over DTS
|
|
|
|
|
|
|
|
|
|
Message-id: <20180511210117.10457-1-msalter@redhat.com>
|
|
|
|
|
Patchwork-id: 214708
|
|
|
|
|
O-Subject: [RHEL-8 BZ1576869] [RHEL only] acpi: prefer booting with ACPI over DTS
|
|
|
|
|
Bugzilla: 1576869
|
|
|
|
|
RH-Acked-by: Jonathan Toppins <jtoppins@redhat.com>
|
|
|
|
|
RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
|
|
|
|
|
RH-Acked-by: Bhupesh Sharma <bhsharma@redhat.com>
|
|
|
|
|
RH-Acked-by: Dean Nelson <dnelson@redhat.com>
|
|
|
|
|
|
|
|
|
|
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1576869
|
|
|
|
|
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=16208479
|
|
|
|
|
Testing: Verified kernel defaults to ACPI on Mustang
|
|
|
|
|
|
|
|
|
|
From: Jonathan Toppins <jtoppins@redhat.com>
|
|
|
|
|
|
|
|
|
|
This patch forces ACPI boot tables to be preferred over DTS.
|
|
|
|
|
|
|
|
|
|
Currently for ACPI to be used a user either has to set acpi=on on the
|
|
|
|
|
kernel command line or make sure any device tree passed to the kernel
|
|
|
|
|
is empty. If the dtb passed to the kernel is non-empty then device-tree
|
|
|
|
|
will be chosen as the boot method of choice.
|
|
|
|
|
|
|
|
|
|
RHEL does not wish to support this boot method so change table boot
|
|
|
|
|
preferences to use ACPI. In the event ACPI table checks fail the kernel
|
|
|
|
|
will fallback to using DTS to boot.
|
|
|
|
|
|
|
|
|
|
Signed-off-by: Jonathan Toppins <jtoppins@redhat.com>
|
|
|
|
|
|
|
|
|
|
Upstream Status: RHEL only
|
|
|
|
|
Signed-off-by: Mark Salter <msalter@redhat.com>
|
|
|
|
|
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
|
|
|
|
|
---
|
|
|
|
|
arch/arm64/kernel/acpi.c | 2 +-
|
|
|
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
|
|
|
|
|
|
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
|
2020-09-30 15:55:26 +00:00
|
|
|
index 455966401102..5cb0d548ec25 100644
|
2020-04-23 20:47:21 +00:00
|
|
|
--- a/arch/arm64/kernel/acpi.c
|
|
|
|
|
+++ b/arch/arm64/kernel/acpi.c
|
2020-06-03 18:47:28 +00:00
|
|
|
@@ -40,7 +40,7 @@ int acpi_pci_disabled = 1; /* skip ACPI PCI scan and IRQ initialization */
|
2020-04-23 20:47:21 +00:00
|
|
|
EXPORT_SYMBOL(acpi_pci_disabled);
|
2020-06-30 14:24:22 +00:00
|
|
|
|
2020-04-23 20:47:21 +00:00
|
|
|
static bool param_acpi_off __initdata;
|
|
|
|
|
-static bool param_acpi_on __initdata;
|
|
|
|
|
+static bool param_acpi_on __initdata = true;
|
|
|
|
|
static bool param_acpi_force __initdata;
|
2020-06-30 14:24:22 +00:00
|
|
|
|
2020-04-23 20:47:21 +00:00
|
|
|
static int __init parse_acpi(char *arg)
|
|
|
|
|
--
|
2020-09-09 17:27:11 +00:00
|
|
|
2.28.0
|
2020-04-23 20:47:21 +00:00
|
|
|
|
