linux/arch/alpha
Ivan Kokshaysky 98c532ecbe alpha: use single HAE window on T2 core logic (gamma, sable)
T2 are the only alpha SMP systems that do HAE switching at runtime, which
is fundamentally racy on SMP.  This patch limits MMIO space on T2 to HAE0
only, like we did on MCPCIA (rawhide) long ago.  This leaves us with only
112 Mb of PCI MMIO (128 Mb HAE aperture minus 16 Mb reserved for EISA),
but since linux PCI allocations are reasonably tight, it should be enough
for sane hardware configurations.

Also, fix a typo in MCPCIA_FROB_MMIO macro which shouldn't call set_hae()
if MCPCIA_ONE_HAE_WINDOW is defined.  It's more for correctness, as
set_hae() is a no-op anyway in that case.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-26 16:52:12 -07:00
..
boot include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
include/asm alpha: use single HAE window on T2 core logic (gamma, sable) 2010-10-26 16:52:12 -07:00
kernel alpha: use single HAE window on T2 core logic (gamma, sable) 2010-10-26 16:52:12 -07:00
lib remove __attribute_used__ 2008-01-28 23:21:18 +01:00
math-emu Revert "endian: #define __BYTE_ORDER" 2010-05-26 08:30:15 -07:00
mm alpha: invoke oom-killer from page fault 2010-05-26 00:40:28 +02:00
oprofile oprofile: more whitespace fixes 2008-10-15 20:55:51 +02:00
defconfig defconfig reduction 2010-08-14 22:26:53 +02:00
Kconfig alpha: enable ARCH_DMA_ADDR_T_64BIT 2010-10-26 16:52:12 -07:00
Kconfig.debug alpha/parisc: remove config variable DEBUG_RWLOCK 2008-02-06 10:41:03 -08:00
Makefile alpha: link failure fix 2008-06-20 16:46:10 -07:00