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MIPS: add nmi_enter() + nmi_exit() to nmi_exception_handler() 

We need to enter NMI context when NMI interrupt fires.

Signed-off-by: Petri Gynther <pgynther@google.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11323/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Petri Gynther 2015-10-19 11:49:52 -07:00 committed by Ralf Baechle
parent 1b4a5ddb12
commit 7963b3f127
1 changed files with 2 additions and 0 deletions
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2
arch/mips/kernel/traps.c
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@ -1856,12 +1856,14 @@ void __noreturn nmi_exception_handler(struct pt_regs *regs)
{ {
char str[100]; char str[100];
nmi_enter();
raw_notifier_call_chain(&nmi_chain, 0, regs); raw_notifier_call_chain(&nmi_chain, 0, regs);
bust_spinlocks(1); bust_spinlocks(1);
snprintf(str, 100, "CPU%d NMI taken, CP0_EPC=%lx\n", snprintf(str, 100, "CPU%d NMI taken, CP0_EPC=%lx\n",
smp_processor_id(), regs->cp0_epc); smp_processor_id(), regs->cp0_epc);
regs->cp0_epc = read_c0_errorepc(); regs->cp0_epc = read_c0_errorepc();
die(str, regs); die(str, regs);
nmi_exit();
} }
#define VECTORSPACING 0x100 /* for EI/VI mode */ #define VECTORSPACING 0x100 /* for EI/VI mode */