linux/arch
Christoph Lameter 66701b1499 [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA
This patch simply defines CONFIG_ZONE_DMA for all arches.  We later do special
things with CONFIG_ZONE_DMA after the VM and an arch are prepared to work
without ZONE_DMA.

CONFIG_ZONE_DMA can be defined in two ways depending on how an architecture
handles ISA DMA.

First if CONFIG_GENERIC_ISA_DMA is set by the arch then we know that the arch
needs ZONE_DMA because ISA DMA devices are supported.  We can catch this in
mm/Kconfig and do not need to modify arch code.

Second, arches may use ZONE_DMA in an unknown way.  We set CONFIG_ZONE_DMA for
all arches that do not set CONFIG_GENERIC_ISA_DMA in order to insure backwards
compatibility.  The arches may later undefine ZONE_DMA if their arch code has
been verified to not depend on ZONE_DMA.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:18 -08:00
..
alpha PCI: make isa_bridge Alpha-only 2007-02-07 15:50:06 -08:00
arm [APM] ARM: Convert to use shared APM emulation. 2007-02-09 17:08:58 +00:00
arm26 [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
avr32 [AVR32] Add missing #include <linux/module.h> 2007-02-09 15:23:46 +01:00
cris [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00
frv [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00
h8300 [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00
i386 [PATCH] i386 vDSO: use install_special_mapping 2007-02-09 09:25:47 -08:00
ia64 [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00
m32r [PATCH] Change cpu_up and co from __devinit to __cpuinit 2007-01-11 18:18:20 -08:00
m68k [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
m68knommu [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00
mips Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm 2007-02-09 09:44:28 -08:00
parisc [PATCH] Change cpu_up and co from __devinit to __cpuinit 2007-01-11 18:18:20 -08:00
powerpc [PATCH] powerpc vDSO: use install_special_mapping 2007-02-09 09:25:47 -08:00
ppc [POWERPC] PPC: Use ARRAY_SIZE macro when appropriate 2007-02-08 16:08:25 +11:00
s390 [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00
sh Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm 2007-02-09 09:44:28 -08:00
sh64 [PATCH] Generic ioremap_page_range: sh64 conversion 2006-12-08 08:28:52 -08:00
sparc [PATCH] sanitize sections for sparc32 smp 2007-02-01 16:17:06 -08:00
sparc64 [PATCH] Drop free_pages() 2007-02-11 10:51:18 -08:00
um [PATCH] uml: fix signal frame alignment 2007-01-30 16:01:35 -08:00
v850 [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00
x86_64 [PATCH] x86_64 ia32 vDSO: use install_special_mapping 2007-02-09 09:25:47 -08:00
xtensa [PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA 2007-02-11 10:51:18 -08:00