Revert "x86/acpi: Set persistent cpuid <-> nodeid mapping when booting"
authorDou Liyang <douly.fnst@cn.fujitsu.com>
Fri, 3 Mar 2017 08:02:23 +0000 (16:02 +0800)
committerThomas Gleixner <tglx@linutronix.de>
Sat, 11 Mar 2017 13:41:18 +0000 (14:41 +0100)
commitc962cff17dfa11f4a8227ac16de2b28aea3312e4
tree8400e016a0a9eb1583a7986216d4422b0bcb2a92
parent434fd6353b4c83938029ca6ea7dfa4fc82d602bd
Revert "x86/acpi: Set persistent cpuid <-> nodeid mapping when booting"

Revert: dc6db24d2476 ("x86/acpi: Set persistent cpuid <-> nodeid mapping when booting")

The mapping of "cpuid <-> nodeid" is established at boot time via ACPI
tables to keep associations of workqueues and other node related items
consistent across cpu hotplug.

But, ACPI tables are unreliable and failures with that boot time mapping
have been reported on machines where the ACPI table and the physical
information which is retrieved at actual hotplug is inconsistent.

Revert the mapping implementation so it can be replaced with a less error
prone approach.

Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Tested-by: Xiaolong Ye <xiaolong.ye@intel.com>
Cc: rjw@rjwysocki.net
Cc: linux-acpi@vger.kernel.org
Cc: guzheng1@huawei.com
Cc: izumi.taku@jp.fujitsu.com
Cc: lenb@kernel.org
Link: http://lkml.kernel.org/r/1488528147-2279-2-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/kernel/acpi/boot.c
drivers/acpi/acpi_processor.c
drivers/acpi/bus.c
drivers/acpi/processor_core.c
include/linux/acpi.h