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

2018-01-26 Thread Ed Maste
On 25 January 2018 at 17:21, Ian FREISLICH 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

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

2018-01-25 Thread Ian FREISLICH
On 01/25/18 17:13, Konstantin Belousov wrote: > On Thu, Jan 25, 2018 at 04:58:04PM -0500, Ian FREISLICH wrote: >> Hi >> >> I cannot for the life of me recall why I had vm.pmap.pcid_enabled=1 set >> in loader.conf, but I did.  Most likely very historical reasons. >> >> r328166 and later reset

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

2018-01-25 Thread Konstantin Belousov
On Thu, Jan 25, 2018 at 04:58:04PM -0500, Ian FREISLICH wrote: > Hi > > I cannot for the life of me recall why I had vm.pmap.pcid_enabled=1 set > in loader.conf, but I did.  Most likely very historical reasons. > > r328166 and later reset without dropping into the debugger during boot, > no