lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

powerpc: Unconditionally enabled irq stacks

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/powerpc/kernel/process.c
View File

@ -1005,7 +1005,6 @@ out:
return error;
}
#ifdef CONFIG_IRQSTACKS
static inline int valid_irq_stack(unsigned long sp, struct task_struct *p,
unsigned long nbytes)
{
@ -1030,10 +1029,6 @@ static inline int valid_irq_stack(unsigned long sp, struct task_struct *p,
return 0;
}
#else
#define valid_irq_stack(sp, p, nb) 0
#endif /* CONFIG_IRQSTACKS */
int validate_sp(unsigned long sp, struct task_struct *p,
unsigned long nbytes)
{