Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first -- Linux PCI


Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
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Subject: Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Tue, 29 May 2012 10:57:29 -0700
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Steven Newbury <steve@xxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-pci@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <CAE9FiQWUrkKEpLmEn9kzkKOtEtX7-R8shdVSKGgSyHezKpzJCw@mail.gmail.com>
References: <1337754877-19759-1-git-send-email-yinghai@kernel.org> <1337754877-19759-3-git-send-email-yinghai@kernel.org> <CA+55aFzd1BWqidt95qZLc1x_YU=WeGS=mKUOMvO_3omOhc_5VA@mail.gmail.com> <CAE9FiQXx_x9M5ncLk4DyL8heYQTcsHZt2JofFMjPfUd4mympeA@mail.gmail.com> <CAE9FiQX=ECg5BmKm7B2ua_rZ6bOsceeHNsfFQRWBbNZx+8sBfw@mail.gmail.com> <20120525043651.GA1391@google.com> <CAE9FiQXvYH4zCqp_uOb2nw7jvm8B=q3yx1tCjJUT+PkdymYEuw@mail.gmail.com> <CAE9FiQW0rm2_sKdSCWs3TfatJB9yHwvmvt9_vBYMtOq_YBbmfw@mail.gmail.com> <20120525193716.GA8817@google.com> <CAE9FiQWrZaBpT1fzC_-mSBfDd4AKGrdGomPxVNSU-SFPrVNvOw@mail.gmail.com> <CAErSpo7d+zn-qgWKcbro7yneXRtmZQCOHi+kiGzYUTfs+aiF4g@mail.gmail.com> <CAE9FiQUWWO75WP3gYRwYbyO_ZiWwyjKnzMxOGhfjY4H98w2Hbw@mail.gmail.com> <CAErSpo46fCCFCijNfMzGYP__pP6hkPFurMS=1=wSAZsg5z0-Lg@mail.gmail.com> <CAE9FiQWUrkKEpLmEn9kzkKOtEtX7-R8shdVSKGgSyHezKpzJCw@mail.gmail.com>
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On 05/29/2012 10:55 AM, Yinghai Lu wrote:
> 
> x86 are using 16bits.
> 
> some others use 32 bits.
> #define IO_SPACE_LIMIT 0xffffffff
> 
> ia64 and sparc are using 64bits.
> #define IO_SPACE_LIMIT               0xffffffffffffffffUL
> 
> but pci only support 16bits and 32bits.
> 
> maybe later we can add
> PCI_MAX_RESOURCE_16
> 
> to handle 16bits and 32bit io ports.
> 

Shouldn't this be dealt by root port apertures?

	-hpa
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Follow-Ups:
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu

References:
- [PATCH 00/11] PCI: resource allocation related
  - From: Yinghai Lu
- [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Linus Torvalds
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Bjorn Helgaas
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Bjorn Helgaas
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Bjorn Helgaas
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Bjorn Helgaas
- Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
  - From: Yinghai Lu

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