Re: NMI handler

2017-03-03 Thread Mike Larkin
On Fri, Mar 03, 2017 at 01:11:21PM -0700, Theo de Raadt wrote: > Completely agree. > +1 , although I don't think we should be dropping to ddb. But that's a different discussion. > > Whan an amd64 machine gets an NMI, the current process in user land > > is signalled with SIGBUS. That does not m

Re: NMI handler

2017-03-03 Thread Theo de Raadt
Completely agree. > Whan an amd64 machine gets an NMI, the current process in user land > is signalled with SIGBUS. That does not make sense, the machine > should drop to ddb regardless wether a user process is currently > scheduled or not. NMI signals hardware failure or a debugging > button. >

NMI handler

2017-03-03 Thread Alexander Bluhm
Hi, Whan an amd64 machine gets an NMI, the current process in user land is signalled with SIGBUS. That does not make sense, the machine should drop to ddb regardless wether a user process is currently scheduled or not. NMI signals hardware failure or a debugging button. The code in i386 has alw