Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8

Hi Michael!

On 10/28/21 08:39, Michael Ellerman wrote:

quoted

quoted

No, I will try that now.

That completed fine on my BE VM here.

I ran these in two tmux windows:
  $ sbuild -d sid --arch=powerpc --no-arch-all gcc-11_11.2.0-10.dsc
  $ sbuild -d sid --arch=ppc64 --no-arch-all gcc-11_11.2.0-10.dsc


The VM has 32 CPUs, with 4 threads per core:

  $ ppc64_cpu --info
  Core   0:    0*    1*    2*    3*
  Core   1:    4*    5*    6*    7*
  Core   2:    8*    9*   10*   11*
  Core   3:   12*   13*   14*   15*
  Core   4:   16*   17*   18*   19*
  Core   5:   20*   21*   22*   23*
  Core   6:   24*   25*   26*   27*
  Core   7:   28*   29*   30*   31*

It seems I also can no longer reproduce the issue, even when building the most problematic
packages and I think we should consider it fixed for now. I will keep monitoring the server,
of course, and will let you know in case the problem shows again.

Thanks a lot again for fixing this issue!

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913