linux-kernel - Re: [Patch v7 0/7] Consolidate ACPI PCI root common code into ACPI core

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Message-ID: <20151015204829.GH10442@localhost>
Date:	Thu, 15 Oct 2015 15:48:29 -0500
From:	Bjorn Helgaas <helgaas@...nel.org>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Marc Zyngier <marc.zyngier@....com>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Liviu Dudau <Liviu.Dudau@....com>, linux-acpi@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	x86@...nel.org
Subject: Re: [Patch v7 0/7] Consolidate ACPI PCI root common code into ACPI
 core

On Wed, Oct 14, 2015 at 02:29:35PM +0800, Jiang Liu wrote:
> From: Liu Jiang <jiang.liu@...ux.intel.com>
> 
> This patch set consolidates common code to support ACPI PCI root on x86
> and IA64 platforms into ACPI core, to reproduce duplicated code and
> simplify maintenance. And a patch set based on previous version to support
> ACPI based PCIe host bridge on ARM64 has been posted at:
> https://lkml.org/lkml/2015/5/26/207
> 
> It's based on latest mainstream kernel. It passes Fengguang's 0day test
> suite and has been tested on two IA64 platforms and one x86 platform.
> 
> V6->V7:
> 1) Improve commit message according to Bjorn's suggestion.
> 2) Move arch specific logic(code) from ACPI core into arch code
>    according to Bjorn's review comments.

Thanks for cleaning this up; I think it looks much better.

As far as I'm concerned, this series is ready to go.  I assume Rafael
will merge it.

> V5->V6:
> 1) Patch 5 to reset domain number to 0 when pci_ignore_seg is set
> 2) Remove parameter segment and node from function acpi_pci_root_create(),
>    as suggested by Lorenzo and Bjorn.
> V4-V5:
> 1) As suggested by Lorenzo Pieralisi <lorenzo.pieralisi@....com>, do not
>    introduce "struct pci_controller" into generic drivers/acpi/pci_root.c,
>    so ARM64 doesn't need to define a useless structure. And it simplifies
>    code a little too.
> 
> V3->V4:
> 1) Add patch[05/08] support solve building issue on ARM64
> 2) Solve an implicitly pointer cast issue.
> 3) Rebase to latest mainstream kernel
> 
> V2->V3:
> 1. Move memory allocation/free from ACPI core into arch
> 2. Kill the field 'segment' in struct pci_root_info on x86
> 
> Thanks!
> Gerry
> 
> Jiang Liu (7):
>   ACPI/PCI: Enhance ACPI core to support sparse IO space
>   ia64/PCI/ACPI: Use common ACPI resource parsing interface for host
>     bridge
>   ia64/PCI: Use common struct resource_entry to replace struct
>     iospace_resource
>   PCI/ACPI: Add interface acpi_pci_root_create()
>   ACPI, PCI: Reset acpi_root_dev->domain to 0 when pci_ignore_seg is
>     set
>   x86/PCI/ACPI: Use common interface to support PCI host bridge
>   ia64/PCI/ACPI: Use common interface to support PCI host bridge
> 
>  arch/ia64/include/asm/pci.h |    5 -
>  arch/ia64/pci/pci.c         |  368 ++++++++++++-------------------------------
>  arch/x86/pci/acpi.c         |  296 +++++++++++-----------------------
>  drivers/acpi/pci_root.c     |  204 ++++++++++++++++++++++++
>  drivers/acpi/resource.c     |    9 +-
>  include/linux/ioport.h      |    1 +
>  include/linux/pci-acpi.h    |   24 +++
>  7 files changed, 423 insertions(+), 484 deletions(-)
> 
> -- 
> 1.7.10.4
> 
> --
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