From: Constantin Baranov <const@mimas.ru>
To: Ingo Molnar <mingo@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 2.6.28-rc3] x86: make CONFIG_SWIOTLB configurable
Date: Tue, 04 Nov 2008 20:28:52 +0400 [thread overview]
Message-ID: <49107844.8070509@mimas.ru> (raw)
Make it possible to enable individually the CONFIG_SWIOTLB option.
This is useful for Intel x86_64 systems without DMAR support.
Signed-off-by: Constantin Baranov <const@mimas.ru>
---
Tested on my system based on Gigabyte GA-EP45-DS3 mainboard
(P45 chipset) with 8 GiB of RAM.
Currently I need to enable either CONFIG_GART_IOMMU or
CONFIG_AMD_IOMMU for proper work. Both are AMD specific.
When the patch applied, just CONFIG_SWIOTLB is sufficient.
arch/x86/Kconfig | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- linux-2.6.28-rc3/arch/x86/Kconfig 2008-11-04 17:32:29.846408880 +0400
+++ linux-2.6.28-rc3-swiotlb/arch/x86/Kconfig 2008-11-04 18:11:47.796408084 +0400
@@ -566,7 +566,9 @@ config AMD_IOMMU
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
- bool
+ bool "Support for software bounce buffers"
+ depends on X86_64 && EXPERIMENTAL
+ default n
help
Support for software bounce buffers used on x86-64 systems
which don't have a hardware IOMMU (e.g. the current generation
next reply other threads:[~2008-11-04 16:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-04 16:28 Constantin Baranov [this message]
2008-11-05 10:21 ` [PATCH 2.6.28-rc3] x86: make CONFIG_SWIOTLB configurable Pavel Machek
2008-11-05 15:59 ` Constantin Baranov
2008-11-06 0:53 ` FUJITA Tomonori
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