The patch titled
uml: shrink kernel stacks
has been added to the -mm tree. Its filename is
uml-shrink-kernel-stacks.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: uml: shrink kernel stacks
From: Jeff Dike <jdike@xxxxxxxxxxx>
Make kernel stacks be 1 page on i386 and 2 pages on x86_64. These match the
host values.
Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxxxxxx>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/um/Kconfig | 3 ++-
arch/um/defconfig | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff -puN arch/um/Kconfig~uml-shrink-kernel-stacks arch/um/Kconfig
--- a/arch/um/Kconfig~uml-shrink-kernel-stacks
+++ a/arch/um/Kconfig
@@ -277,7 +277,8 @@ config HIGHMEM
config KERNEL_STACK_ORDER
int "Kernel stack size order"
- default 2
+ default 1 if 64BIT
+ default 0 if !64BIT
help
This option determines the size of UML kernel stacks. They will
be 1 << order pages. The default is OK unless you're running Valgrind
diff -puN arch/um/defconfig~uml-shrink-kernel-stacks arch/um/defconfig
--- a/arch/um/defconfig~uml-shrink-kernel-stacks
+++ a/arch/um/defconfig
@@ -86,7 +86,7 @@ CONFIG_MCONSOLE=y
# CONFIG_MAGIC_SYSRQ is not set
CONFIG_NEST_LEVEL=0
# CONFIG_HIGHMEM is not set
-CONFIG_KERNEL_STACK_ORDER=2
+CONFIG_KERNEL_STACK_ORDER=0
CONFIG_UML_REAL_TIME_CLOCK=y
#
_
Patches currently in -mm which might be from jdike@xxxxxxxxxxx are
origin.patch
uml-remove-task_protections.patch
uml-use-um_thread_size-in-userspace-code.patch
uml-tidy-irq-code.patch
uml-irq-stacks.patch
uml-monitor-stack-usage.patch
uml-shrink-kernel-stacks.patch
-
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