Re: [PATCH v2 14/16] x86, nvdimm, kexec: Use walk_iomem_res_desc() for iomem search

From	Minfei Huang <mhuang@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2 14/16] x86, nvdimm, kexec: Use walk_iomem_res_desc() for iomem search
Date	2015-12-27 03:20 +0100
Message-ID	<qK969-F3-1@gated-at.bofh.it> (permalink)
References	<qJISl-Rm-3@gated-at.bofh.it> <qJISm-Rm-33@gated-at.bofh.it> <qJUqt-8ap-9@gated-at.bofh.it> <qK7xn-830-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 12/26/15 at 05:31pm, Toshi Kani wrote:
> + cc: kexec list
> 
> On 12/26/2015 3:38 AM, Borislav Petkov wrote:
> >On Fri, Dec 25, 2015 at 03:09:23PM -0700, Toshi Kani wrote:
> >>Change to call walk_iomem_res_desc() for searching resource entries
> >>with the following names:
> >>  "ACPI Tables"
> >>  "ACPI Non-volatile Storage"
> >>  "Persistent Memory (legacy)"
> >>  "Crash kernel"
> >>
> >>Note, the caller of walk_iomem_res() with "GART" is left unchanged
> >>because this entry may be initialized by out-of-tree drivers, which
> >>do not have 'desc' set to IORES_DESC_GART.
> >
> >There's this out-of-tree bogus argument again. :\
> >
> >Why do we care about out-of-tree drivers?
> >
> >You can just as well fix the "GART" case too and kill walk_iomem_res()
> >altogether...
> 
> Right, but I do not see any "GART" case in the upstream code, so I
> cannot change it...

Hi, Toshi.

You can refer the below link that you may get a clue about GART. This is
the fisrt time kexec-tools tried to support to ignore GART region in 2nd
kernel.

http://lists.infradead.org/pipermail/kexec/2008-December/003096.html

Thanks
Minfei
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Thread

[PATCH v2 01/16] resource: Add System RAM resource type Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 02/16] resource: make resource flags handled properly Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 13/16] resource: Add walk_iomem_res_desc() Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 10/16] resource: Change walk_system_ram to use System RAM type Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 09/16] drivers: Initialize resource entry to zero Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
    Re: [PATCH v2 09/16] drivers: Initialize resource entry to zero Simon Horman <horms@verge.net.au> - 2015-12-28 22:40 +0100
  [PATCH v2 11/16] arm/samsung: Change s3c_pm_run_res() to use System RAM type Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 07/16] kexec: Set IORESOURCE_SYSTEM_RAM to System RAM Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 03/16] resource: Add I/O resource descriptor Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 06/16] arch: Set IORESOURCE_SYSTEM_RAM to System RAM Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 08/16] xen, mm: Set IORESOURCE_SYSTEM_RAM to System RAM Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 14/16] x86,nvdimm,kexec: Use walk_iomem_res_desc() for iomem search Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
    Re: [PATCH v2 14/16] x86,nvdimm,kexec: Use walk_iomem_res_desc() for  iomem search Borislav Petkov <bp@alien8.de> - 2015-12-26 11:40 +0100
      Re: [PATCH v2 14/16] x86,nvdimm,kexec: Use walk_iomem_res_desc() for  iomem search Toshi Kani <toshi.kani@hpe.com> - 2015-12-27 01:40 +0100
        Re: [PATCH v2 14/16] x86, nvdimm, kexec: Use walk_iomem_res_desc()  for iomem search Minfei Huang <mhuang@redhat.com> - 2015-12-27 03:20 +0100
          Re: [PATCH v2 14/16] x86, nvdimm, kexec: Use walk_iomem_res_desc()  for iomem search Borislav Petkov <bp@alien8.de> - 2015-12-27 11:30 +0100
    Re: [PATCH v2 14/16] x86,nvdimm,kexec: Use walk_iomem_res_desc() for  iomem search Minfei Huang <mhuang@redhat.com> - 2015-12-26 17:10 +0100
      Re: [PATCH v2 14/16] x86,nvdimm,kexec: Use walk_iomem_res_desc() for  iomem search Toshi Kani <toshi.kani@hpe.com> - 2015-12-27 01:40 +0100
  [PATCH v2 16/16] ACPI/EINJ: Allow memory error injection to NVDIMM Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100
  [PATCH v2 12/16] memremap: Change region_intersects() to take @flags and @desc Toshi Kani <toshi.kani@hpe.com> - 2015-12-25 23:20 +0100

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