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Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices

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From: Benjamin Herrenschmidt <benh@...>
To: Linus Torvalds <torvalds@...>
Cc: Luis R. Rodriguez <mcgrof@...>, Alan Cox <alan@...>, linux-kernel <linux-kernel@...>, Jeff Garzik <jeff@...>, John W. Linville <linville@...>, linux-wireless <linux-wireless@...>
Subject: Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices
Date: Tuesday, September 18, 2007 - 6:21 pm

On Tue, 2007-09-18 at 13:30 -0700, Linus Torvalds wrote:

Also, I've been told that modern x86 chipsets have the ability to remap
IO space in the CPU physical address space. Is that true ? That would
allow even x86 to get rid of the condition and just use some magic
offset at map time.

Ben.


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Messages in current thread:
[PATCH] Clarify pci_iomap() usage for MMIO-only devices, Luis R. Rodriguez, (Mon Sep 17, 4:22 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Alan Cox, (Tue Sep 18, 6:34 am)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Luis R. Rodriguez, (Tue Sep 18, 2:46 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 3:03 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Alan Cox, (Tue Sep 18, 6:25 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Nick Kossifidis, (Wed Sep 19, 11:07 am)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Benjamin Herrenschmidt, (Tue Sep 18, 6:16 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Luis R. Rodriguez, (Tue Sep 18, 3:07 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 3:22 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Jeff Garzik, (Tue Sep 18, 4:21 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Benjamin Herrenschmidt, (Tue Sep 18, 6:20 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Jeff Garzik, (Tue Sep 18, 7:08 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 7:27 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Luis R. Rodriguez, (Tue Sep 18, 4:12 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 4:30 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Benjamin Herrenschmidt, (Tue Sep 18, 6:21 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 6:36 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Luis R. Rodriguez, (Tue Sep 18, 5:02 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 5:14 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Jeff Garzik, (Tue Sep 18, 5:30 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 5:42 pm)
Re: [PATCH] Clarify pci_iomap() usage for MMIO-only devices, Linus Torvalds, (Tue Sep 18, 6:25 pm)