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authorGuilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>2017-11-17 16:58:59 -0200
committerMichael Ellerman <mpe@ellerman.id.au>2018-01-22 05:48:35 +1100
commit45baee1416a0086dccaa8a94c70e6721a6906fa2 (patch)
treeb0ab9ded221b29cf0384ac22eadcd8ff97b64b09 /tools/perf/scripts/python/export-to-postgresql.py
parent7339390d772ddee0447886d72c3aebc3b58d9583 (diff)
powerpc/powernv: Add ppc_pci_reset_phbs parameter to issue a PHB reset
During a kdump kernel boot in PowerPC, we request a reset of the PHBs to the FW. It makes sense, since if we are booting a kdump kernel it means we had some trouble before and we cannot rely in the adapters' health; they could be in a bad state, hence the reset is needed. But this reset is useful not only in kdump - there are situations, specially when debugging drivers, that we could break an adapter in a way it requires such reset. One can tell to just go ahead and reboot the machine, but happens that many times doing kexec is much faster, and so preferable than a full power cycle. This patch adds the ppc_pci_reset_phbs parameter to perform such reset. Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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