tree f980db4e2b19dfcd4413e6cba4f667eb1d8c79cd
parent 6879dc137ea4efad65cab8bf8a7c0b742bcf92cc
author David Gibson <david@gibson.dropbear.id.au> 1119399331 -0700
committer Linus Torvalds <torvalds@ppc970.osdl.org> 1119404786 -0700

[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>