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Date:   Tue, 26 Sep 2017 23:35:40 +0800
From:   kernel test robot <fengguang.wu@...el.com>
To:     Dou Liyang <douly.fnst@...fujitsu.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>, tipbuild@...or.com, lkp@...org
Subject: [x86/apic]  935356cecd:
 ACPI_Error:Table[DMAR]is_not_invalidated_during_early_boot_stage(#/tbxface-#)


FYI, we noticed the following commit:

commit: 935356cecda851d94381e1c6fea9dec443f908fe ("x86/apic: Initialize interrupt mode after timer init")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git x86/apic

in testcase: will-it-scale
with following parameters:

	nr_task: 100%
	mode: process
	test: open2
	cpufreq_governor: performance

test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale


on test machine: 256 threads Phi with 96G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+----------------+------------+------------+
|                | 34fba3e6b1 | 935356cecd |
+----------------+------------+------------+
| boot_successes | 4          | 4          |
+----------------+------------+------------+



kern  :info  : [    0.020000] tsc: Fast TSC calibration using PIT
kern  :info  : [    0.024000] tsc: Detected 1297.000 MHz processor
kern  :info  : [    0.028000] Calibrating delay loop (skipped), value calculated using timer frequency.. 2594.00 BogoMIPS (lpj=5188000)
kern  :info  : [    0.032007] pid_max: default: 278528 minimum: 2176
kern  :info  : [    0.036266] ACPI: Core revision 20170728
kern  :err   : [    0.040010] ACPI Error: Table [DMAR] is not invalidated during early boot stage (20170728/tbxface-196)
kern  :info  : [    0.105384] ACPI: 3 ACPI AML tables successfully acquired and loaded
kern  :info  : [    0.132721] Dentry cache hash table entries: 8388608 (order: 14, 67108864 bytes)
kern  :info  : [    0.149441] Inode-cache hash table entries: 4194304 (order: 13, 33554432 bytes)
kern  :info  : [    0.152556] Mount-cache hash table entries: 131072 (order: 8, 1048576 bytes)
kern  :info  : [    0.156404] Mountpoint-cache hash table entries: 131072 (order: 8, 1048576 bytes)


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
lkp

View attachment "config-4.14.0-rc2-00010-g935356c" of type "text/plain" (108605 bytes)

View attachment "job-script" of type "text/plain" (6795 bytes)

Download attachment "kmsg.xz" of type "application/x-xz" (23472 bytes)

View attachment "will-it-scale" of type "text/plain" (156 bytes)

View attachment "job.yaml" of type "text/plain" (4458 bytes)

View attachment "reproduce" of type "text/plain" (300 bytes)

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