tree 2571b5d1851a9f2bef62e92def3608f738748251
parent 1de1455f33709a8afd8d41d26d09739a1148105b
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1368169158 +1000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1368169158 +1000

powerpc/powernv: Improve kexec reliability

We add a machine_shutdown hook that frees the OPAL interrupts
(so they get masked at the source and don't fire while kexec'ing)
and which triggers an IODA reset on all the PCIe host bridges
which will have the effect of blocking all DMAs and subsequent
PCIs interrupts.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>