The patch titled
ia64: Enable SWIOTLB only when needed
has been added to the -mm tree. Its filename is
ia64-enable-swiotlb-only-when-needed.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: ia64: Enable SWIOTLB only when needed
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
Don't force CONFIG_SWIOTLB on when not actually needed (i.e. HP_ZX1 and
SGI_SN2).
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/ia64/Kconfig | 5 ++++-
1 files changed, 4 insertions(+), 1 deletion(-)
diff -puN arch/ia64/Kconfig~ia64-enable-swiotlb-only-when-needed arch/ia64/Kconfig
--- a/arch/ia64/Kconfig~ia64-enable-swiotlb-only-when-needed
+++ a/arch/ia64/Kconfig
@@ -28,7 +28,6 @@ config MMU
config SWIOTLB
bool
- default y
config RWSEM_XCHGADD_ALGORITHM
bool
@@ -88,6 +87,7 @@ config IA64_GENERIC
select PCI
select NUMA
select ACPI_NUMA
+ select SWIOTLB
help
This selects the system type of your hardware. A "generic" kernel
will run on any supported IA-64 system. However, if you configure
@@ -104,6 +104,7 @@ config IA64_GENERIC
config IA64_DIG
bool "DIG-compliant"
+ select SWIOTLB
config IA64_HP_ZX1
bool "HP-zx1/sx1000"
@@ -113,6 +114,7 @@ config IA64_HP_ZX1
config IA64_HP_ZX1_SWIOTLB
bool "HP-zx1/sx1000 with software I/O TLB"
+ select SWIOTLB
help
Build a kernel that runs on HP zx1 and sx1000 systems even when they
have broken PCI devices which cannot DMA to full 32 bits. Apart
@@ -131,6 +133,7 @@ config IA64_SGI_SN2
config IA64_HP_SIM
bool "Ski-simulator"
+ select SWIOTLB
endchoice
_
Patches currently in -mm which might be from jbeulich@xxxxxxxxxx are
ia64-swiotlb-bug-fixes.patch
ia64-make-swiotlb-use-bus_to_virt-virt_to_bus.patch
ia64-swiotlb-cleanup.patch
ia64-swiotlb-abstraction-eg-for-xen.patch
ia64-missing-exports-hwsw_sync_.patch
ia64-enable-swiotlb-only-when-needed.patch
x86_64-do-not-always-end-the-stack-trace-with-ulong_max.patch
-
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