Re: Insta-reset-bootloop with r328166 and vm.pmap.pcid_enabled=1

From: Ed Maste <emaste_at_freebsd.org>
Date: Fri, 26 Jan 2018 21:07:29 -0500
On 25 January 2018 at 17:21, Ian FREISLICH
<ian.freislich_at_capeaugusta.com> wrote:
>> Yes, this is how it is currently behaves.
>> PCID can be used to optimize PTI, see https://reviews.freebsd.org/D13985.
>> It is used for very differrent algorithm when PTI=1, comparing with PTI=0.
>
> Maybe there should be an "interlock" on these knobs, although judging
> from the number of reports I'm the only that shot my foot.

Sorry for the trouble.

Once D13985 is committed these knobs can both be set to 1 (and in fact
that will be the default configuration on Intel systems). I suspect
the commit will happen soon and until then it's just a temporary bump
inherent in running -current.
Received on Sat Jan 27 2018 - 01:07:52 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:41:14 UTC