tree d5cedcc1ba2f3fd4ed4c095c98851ed1ecf4e110
parent b8e4a4740fa2b17c0a447b3ab783b3dc10702e27
author Marc Zyngier <Marc.Zyngier@arm.com> 1371812847 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1372084055 +0100

ARM: 7769/1: Cortex-A15: fix erratum 798181 implementation

Looking into the active_asids array is not enough, as we also need
to look into the reserved_asids array (they both represent processes
that are currently running).

Also, not holding the ASID allocator lock is racy, as another CPU
could schedule that process and trigger a rollover, making the erratum
workaround miss an IPI.

Exposing this outside of context.c is a little ugly on the side, so
let's define a new entry point that the erratum workaround can call
to obtain the cpumask.

Cc: <stable@vger.kernel.org> # 3.9
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>