From: David Gibson <david@gibson.dropbear.id.au>
Date: Wed, 22 Jun 2005 00:15:31 +0000 (-0700)
Subject: [PATCH] ppc64: Abolish ioremap_mm
X-Git-Tag: v2.6.13-rc4~130^2~202^2~110
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20cee16ced631f70a62c97bdebae08a1c9470448;p=pandora-kernel.git

[PATCH] ppc64: Abolish ioremap_mm

Currently ppc64 has two mm_structs for the kernel, init_mm and also
ioremap_mm.  The latter really isn't necessary: this patch abolishes it,
instead restricting vmallocs to the lower 1TB of the init_mm's range and
placing io mappings in the upper 1TB.  This simplifies the code in a number
of places and eliminates an unecessary set of pagetables.  It also tweaks
the unmap/free path a little, allowing us to remove the unmap_im_area() set
of page table walkers, replacing them with unmap_vm_area().

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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