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authorAndi Kleen <ak@suse.de>2006-03-25 10:31:31 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 12:14:38 -0500
commitba22f13563de5773701fc318ccaaa37b1fb6d294 (patch)
treee29ddeaca4c9f7b1b5ef08804980600d0e089f5b /arch
parent9d95dd849ccc43c4b21504e1829b5bed68cdb1bc (diff)
[PATCH] x86_64: Remove CONFIG_UNORDERED_IO
It was a failed experiment - all benchmarks done with it on both AMD and Intel showed it was a loss. That was probably because the store buffers of the CPUs for write combining traffic weren't large enough. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86_64/Kconfig10
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 6fc631457196..31bab721cb71 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -520,16 +520,6 @@ config PCI_MMCONFIG
520 bool "Support mmconfig PCI config space access" 520 bool "Support mmconfig PCI config space access"
521 depends on PCI && ACPI 521 depends on PCI && ACPI
522 522
523config UNORDERED_IO
524 bool "Unordered IO mapping access"
525 depends on EXPERIMENTAL
526 help
527 Use unordered stores to access IO memory mappings in device drivers.
528 Still very experimental. When a driver works on IA64/ppc64/pa-risc it should
529 work with this option, but it makes the drivers behave differently
530 from i386. Requires that the driver writer used memory barriers
531 properly.
532
533source "drivers/pci/pcie/Kconfig" 523source "drivers/pci/pcie/Kconfig"
534 524
535source "drivers/pci/Kconfig" 525source "drivers/pci/Kconfig"