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[Xen-devel] [x86/time] 03fa63cc96: ACPI_Error:Table[DMAR]is_not_invalidated_during_early_boot_stage(#/tbxface-#)

FYI, we noticed the following commit:

commit: 03fa63cc96ab35592e0a7d522b8edbc1e6b02d22 ("x86/time: Initialize 
interrupt mode behind timer init")
base: https://git.kernel.org/cgit/linux/kernel/git/xen/tip.git linux-next

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

        nr_task: 50%
        mode: process
        test: futex2
        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: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G 

caused below changes (please refer to attached dmesg/kmsg for entire 

|                | 43436935b7 | 03fa63cc96 |
| boot_successes | 0          | 4          |

kern  :info  : [    0.005000] tsc: Fast TSC calibration using PIT
kern  :info  : [    0.006000] tsc: Detected 2195.020 MHz processor
kern  :info  : [    0.007000] Calibrating delay loop (skipped), value 
calculated using timer frequency.. 4390.04 BogoMIPS (lpj=2195020)
kern  :info  : [    0.008001] pid_max: default: 90112 minimum: 704
kern  :info  : [    0.009037] ACPI: Core revision 20170303
kern  :err   : [    0.010002] ACPI Error: Table [DMAR] is not invalidated 
during early boot stage (20170303/tbxface-193)
kern  :info  : [    0.126278] ACPI: 4 ACPI AML tables successfully acquired and 
kern  :info  : [    0.127118] Security Framework initialized
kern  :info  : [    0.128003] SELinux:  Initializing.
kern  :debug : [    0.129012] SELinux:  Starting in permissive mode
kern  :info  : [    0.132768] Dentry cache hash table entries: 8388608 (order: 
14, 67108864 bytes)

To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml

Kernel Test Robot

Attachment: config-4.12.0-rc4-00029-g03fa63c
Description: Text document

Attachment: job-script
Description: Text document

Attachment: kmsg.xz
Description: Binary data

Attachment: will-it-scale
Description: Text document

Attachment: job.yaml
Description: Text document

Attachment: reproduce
Description: Text document

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