powerpc/pci: [PATCH 1/1 V3] PCIE PHB reset

[Oliver O'Halloran]

On Wed, May 27, 2020 at 12:48 AM <wenxiong at linux.vnet.ibm.com> wrote:
>
> From: Wen Xiong <wenxiong at linux.vnet.ibm.com>
>
> Several device drivers hit EEH(Extended Error handling) when triggering
> kdump on Pseries PowerVM. This patch implemented a reset of the PHBs
> in pci general code when triggering kdump. PHB reset stop all PCI
> transactions from normal kernel. We have tested the patch in several
> enviroments:
> - direct slot adapters
> - adapters under the switch
> - a VF adapter in PowerVM
> - a VF adapter/adapter in KVM guest.
>
> Signed-off-by: Wen Xiong <wenxiong at linux.vnet.ibm.com>

Can you include a patch changelog in future. It's helpful to see what
we need to look at specificly when you post a new revision of a patch.
Looks good to me otherwise.

Reviewed-by: Oliver O'Halloran <oohall at gmail.com>