tree beb7823feed941932975f19e42e89a1c79d7a4be
parent 83fd5cc6481c6b7fa8b45f8a7e0aa7120213430b
author Andi Kleen <andi@firstfloor.org> 1229380390 +0100
committer Ingo Molnar <mingo@elte.hu> 1229464982 +0100

x86: re-enable MCE on secondary CPUS after suspend/resume

Impact: fix disabled MCE after resume

Don't prevent multiple initialization of MCEs.

Back from early prehistory mcheck_init() has a reentry check. Presumably
that was needed in very old kernels to prevent it entering twice.

But as Andreas points out this prevents CPU hotplug (and therefore resume)
to correctly reinitialize MCEs when a AP boots again after being
offlined.

Just drop the check.

Reported-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>