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sh: Disable 4kB stacks when using PAGE_SIZE_64KB.

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This combination triggers a divide by zero in kernel/fork.c when
calculating the initial max_threads value:

	max_threads = mempages / (8 * THREAD_SIZE / PAGE_SIZE);

Simply disable 4K stacks on 64kB PAGE_SIZE to work around this,
as it's not a terribly useful combination to begin with.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2008-09-20 20:16:35 +09:00
parent 2194478157
commit b817f7e020
1 changed files with 1 additions and 1 deletions
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arch/sh/Kconfig.debug
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@ -82,7 +82,7 @@ config DEBUG_STACK_USAGE
config 4KSTACKS
bool "Use 4Kb for kernel stacks instead of 8Kb"
depends on DEBUG_KERNEL && (MMU || BROKEN)
depends on DEBUG_KERNEL && (MMU || BROKEN) && !PAGE_SIZE_64KB
help
If you say Y here the kernel will use a 4Kb stacksize for the
kernel stack attached to each process/thread. This facilitates