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powerpc: Unconditionally enabled irq stacks

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Irq stacks provide an essential protection from stack overflows through
external interrupts, at the cost of two additionals stacks per CPU.

Enable them unconditionally to simplify the kernel build and prevent
people from accidentally disabling them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Christoph Hellwig
2010-06-02 22:24:26 +00:00
committed by Benjamin Herrenschmidt
parent b636f1379e
commit f1ba9a5b2a
8 changed files with 0 additions and 42 deletions
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7
arch/powerpc/Kconfig.debug
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@@ -135,13 +135,6 @@ config DEBUGGER
depends on KGDB || XMON
default y
config IRQSTACKS
bool "Use separate kernel stacks when processing interrupts"
help
If you say Y here the kernel will use separate kernel stacks
for handling hard and soft interrupts. This can help avoid
overflowing the process kernel stacks.
config VIRQ_DEBUG
bool "Expose hardware/virtual IRQ mapping via debugfs"
depends on DEBUG_FS