[Bug 215972] Bhyve crash more then 1 cpu AMD

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215972

--- Comment #21 from Peter Grehan  ---
(In reply to dgilbert from comment #20)

Sorry, didn't know that was you.

There are 2 other things to try here:

- when the guest is hung, on the host issue

  bhyvectl --get-rip --cpu=0 --vm=
  bhyvectl --get-rip --cpu=1 --vm=
  bhyvectl --get-rip --cpu=2 --vm=
  bhyvectl --get-rip --cpu=3 --vm=

 You can look at what the resulting RIP values correspond to by restarting the
guest, and within the guest,

   kgdb /boot/kernel/kernel
   x/i 

- Run the same test with a 12-current guest. With luck, it will panic and drop
into ddb. If it hangs but doesn't panic, for the guest to drop into ddb from
the host by issuing

  bhyvectl --inject-nmi --vm=

 From within ddb you can issue a backtrace.

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[Bug 215972] Bhyve crash more then 1 cpu AMD

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215972

--- Comment #20 from dgilb...@eicat.ca ---
(In reply to Peter Grehan from comment #19)

You asked me this in email on the list. I replied that this didn't seem to have
any effect... Ie: it still hung.

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[Bug 215972] Bhyve crash more then 1 cpu AMD

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215972

--- Comment #19 from Peter Grehan  ---
(In reply to dgilbert from comment #18)

Would you be able to try your same test, but with the guest vCPUs pinned ? e.g.
add the following bhyve parameters

 -p 0:1 -p 1:2 -p 2:3 -p 3:4

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[Bug 215972] Bhyve crash more then 1 cpu AMD

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215972

dgilb...@eicat.ca changed:

   What|Removed |Added

 CC||dgilb...@eicat.ca

--- Comment #18 from dgilb...@eicat.ca ---
I have been able to reproduce something like this:

FreeBSD-11.1-RC3 host, FreeBSD 11.1-RC3 guest.

Host: AMD 9590 (8 core), 32G RAM.
Guest: 4 cores, 4G RAM.

make -j4 buildworld on the guest.

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