Re: powepc: Clear PCR on boot

On Fri, 2018-05-18 at 01:37:42 UTC, Michael Neuling wrote:

Clear the PCR on boot to ensure we are not running in a compat mode.

We've seen this cause problems when a crash (and kdump) occurs while
running compat mode guests. The kdump kernel then runs with the PCR
set and causes problems. The symptom in the kdump kernel (also seen in
petitboot after fast-reboot) is early userspace programs taking
sigills on newer instructions (seen in libc).

Signed-off-by: Michael Neuling <redacted>
Cc: <redacted>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/faf37c44a105f3608115785f17cbbf

cheers