diff options
author | David S. Miller <davem@davemloft.net> | 2010-04-14 02:04:29 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2010-04-14 02:04:29 -0700 |
commit | ec687886de00e1e63f3d821ccade9a61590408ed (patch) | |
tree | 093e303475754d30b679bd35ae9cc5522832057e /arch/sparc/kernel/irq_64.c | |
parent | 035df35d968323f6f463c8789553e8589efcbcd4 (diff) | |
download | kernel_samsung_smdk4412-ec687886de00e1e63f3d821ccade9a61590408ed.zip kernel_samsung_smdk4412-ec687886de00e1e63f3d821ccade9a61590408ed.tar.gz kernel_samsung_smdk4412-ec687886de00e1e63f3d821ccade9a61590408ed.tar.bz2 |
sparc64: Run NMIs on the hardirq stack.
Otherwise we can overflow the main stack with the function tracer
enabled.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/irq_64.c')
-rw-r--r-- | arch/sparc/kernel/irq_64.c | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c index 2b04c72..830d70a 100644 --- a/arch/sparc/kernel/irq_64.c +++ b/arch/sparc/kernel/irq_64.c @@ -47,6 +47,7 @@ #include "entry.h" #include "cpumap.h" +#include "kstack.h" #define NUM_IVECS (IMAP_INR + 1) @@ -713,24 +714,6 @@ void ack_bad_irq(unsigned int virt_irq) void *hardirq_stack[NR_CPUS]; void *softirq_stack[NR_CPUS]; -static __attribute__((always_inline)) void *set_hardirq_stack(void) -{ - void *orig_sp, *sp = hardirq_stack[smp_processor_id()]; - - __asm__ __volatile__("mov %%sp, %0" : "=r" (orig_sp)); - if (orig_sp < sp || - orig_sp > (sp + THREAD_SIZE)) { - sp += THREAD_SIZE - 192 - STACK_BIAS; - __asm__ __volatile__("mov %0, %%sp" : : "r" (sp)); - } - - return orig_sp; -} -static __attribute__((always_inline)) void restore_hardirq_stack(void *orig_sp) -{ - __asm__ __volatile__("mov %0, %%sp" : : "r" (orig_sp)); -} - void __irq_entry handler_irq(int irq, struct pt_regs *regs) { unsigned long pstate, bucket_pa; |