arch/tile: don't enable irqs unconditionally in page fault handler
If we took a page fault while we had interrupts disabled, we shouldn't enable them in the page fault handler. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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@ -342,9 +342,12 @@ static int handle_page_fault(struct pt_regs *regs,
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/*
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* If we're trying to touch user-space addresses, we must
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* be either at PL0, or else with interrupts enabled in the
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* kernel, so either way we can re-enable interrupts here.
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* kernel, so either way we can re-enable interrupts here
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* unless we are doing atomic access to user space with
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* interrupts disabled.
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*/
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local_irq_enable();
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if (!(regs->flags & PT_FLAGS_DISABLE_IRQ))
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local_irq_enable();
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mm = tsk->mm;
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