linux-kernel - RFC: x86: cap iomem_resource to addressable physical memory

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Date:	Tue, 09 Jun 2009 18:32:53 -0700
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Matthew Wilcox <matthew@....cx>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Martin Mares <mj@....cz>, LKML <linux-kernel@...r.kernel.org>,
	linux-pci@...r.kernel.org,
	the arch/x86 maintainers <x86@...nel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-arch@...r.kernel.org
Subject: RFC: x86: cap iomem_resource to addressable physical memory

x86 cannot generate full 64-bit addresses; this patch clamps iomem
addresses to the accessible range.

I wanted to post it for review before committing it, however; comments
would be appreciated, especially of the kind "this is done too early/too
late/in the wrong place/incorrectly".

	-hpa

View attachment "0001-x86-cap-iomem_resource-to-addressable-physical-memo.patch" of type "text/x-patch" (1417 bytes)