git: kernel - Add LAPIC timer C1E test skip for AWS

[Matthew Dillon]

commit cb46bbd1802f449d255ccfb68937b5f3f2284584
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Sun Mar 31 15:35:02 2019 -0700

    kernel - Add LAPIC timer C1E test skip for AWS
    
    * AWS's new EPYC instances (such as m5ad.large) will general-protect
      fault on the MSR we use to test lapic C1E.  For now introduce a
      tunable that allows this test to be turned off.
    
    * AWS instances should put 'hw.lapic_timer_c1e_test=0' in
      /boot/loader.conf
    
    * Allows DFly to boot on AWS as of ami-027940491fc788325 on us-east
      N. Virginia.

Summary of changes:
 sys/platform/pc64/apic/lapic.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/cb46bbd1802f449d255ccfb68937b5f3f2284584


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