Re: [PATCH] powerpc: offline CPU in stop_this_cpu

On Wed, 23 Jun 2021 14:12:45 +1000, Nicholas Piggin wrote:

printk_safe_flush_on_panic() has special lock breaking code for the
case where we panic()ed with the console lock held. It relies on
panic IPI causing other CPUs to mark themselves offline.

Do as most other architectures do.

This effectively reverts commit de6e5d38417e ("powerpc: smp_send_stop do
not offline stopped CPUs"), unfortunately it may result in some false
positive warnings, but the alternative is more situations where we can
crash without getting messages out.

Applied to powerpc/next.

[1/1] powerpc: offline CPU in stop_this_cpu
      https://git.kernel.org/powerpc/c/bab26238bbd44d5a4687c0a64fd2c7f2755ea937

cheers