freebsd stable - Jul 2018 - Ryzen issues on FreeBSD ? (with sort of workaround)

On 7/27/2018 7:01 AM, Pete French wrote:
> So, I have been running the patched kernel for quiet a while now, and it
> works fine for me, but last night I did hit a surprising issue - the
> Linux emulator does not work on Ryzen / Epyc. I tried this on two
> machines (both with the patches) and it coredumps when simply running
> bash on both of them. I copied the OS over to an Intel machine, and that
> works fine.
> 
> I have not tried running with an unpatched kernel on the Ryzen machine
> (I dont have one to hand) but I did try applying the sysctls to the
> Intel box to see if that wuld cause the Linux binaries to crash. It
didn't.
I havent used the linux emulator in ages. What is the easiest way to try
this out ?

	---Mike


-- 
-------------------
Mike Tancsa, tel +1 519 651 3400 x203
Sentex Communications, mike at sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada

On 27/07/2018 14:10, Mike Tancsa wrote:
> I havent used the linux emulator in ages. What is the easiest way to try
> this out ?
in rc.conf have

	linux_enable="YES"

when you boot. then

	pkg install linux_base-c7

	/compat/linux/bin/bash

and you should see a bash pprompt from the Linux shell.

-pete.