linux-kernel - Re: [Patch v5 0/6] Consolidate ACPI PCI root common code into ACPI core

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Message-ID: <20150729203027.GB9640@google.com>
Date:	Wed, 29 Jul 2015 15:30:27 -0500
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Hanjun Guo <hanjun.guo@...aro.org>
Cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	"Rafael J . Wysocki" <rjw@...ysocki.net>,
	Marc Zyngier <marc.zyngier@....com>,
	Liviu Dudau <Liviu.Dudau@....com>,
	Yijing Wang <wangyijing@...wei.com>,
	Lv Zheng <lv.zheng@...el.com>,
	"lenb @ kernel . org" <lenb@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org, "x86 @ kernel . org" <x86@...nel.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [Patch v5 0/6] Consolidate ACPI PCI root common code into ACPI
 core

On Wed, Jul 29, 2015 at 08:17:51PM +0800, Hanjun Guo wrote:
> Hi Bjorn, Rafael,
> 
> Just kindly ping for this patchset, it has been reviewed and tested,
> can it be merged in 4.3?

There are open review issues, e.g., IORESOURCE_MEM_8AND16BIT, so I'm not
ready to merge it as-is.  I'll look at it some more, but we definitely need
some revisions.

> ARM64 ACPI PCI patches is based on this one, if this patchset is merged,
> there will be less dependence for ARM64 ACPI PCI.
> 
> Thanks
> Hanjun
> 
> On 06/09/2015 12:20 AM, Jiang Liu wrote:
> >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.
> >
> >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 (6):
> >   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: Consolidate common PCI host bridge code into ACPI core
> >   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         |  366 ++++++++++++-------------------------------
> >  arch/x86/pci/acpi.c         |  294 ++++++++++------------------------
> >  drivers/acpi/pci_root.c     |  198 +++++++++++++++++++++++
> >  drivers/acpi/resource.c     |    9 +-
> >  include/linux/ioport.h      |    1 +
> >  include/linux/pci-acpi.h    |   23 +++
> >  7 files changed, 415 insertions(+), 481 deletions(-)
> >
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