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Commit b230ff2d authored by Chris Metcalf's avatar Chris Metcalf
Browse files

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: default avatarChris Metcalf <cmetcalf@tilera.com>
parent 12400f1f

arch/tile/mm/fault.c

+5 −2
Original line number Original line Diff line number Diff line
@@ -342,8 +342,11 @@ static int handle_page_fault(struct pt_regs *regs, 
	/*

	/*

	 * If we're trying to touch user-space addresses, we must

	 * If we're trying to touch user-space addresses, we must

	 * be either at PL0, or else with interrupts enabled in the

	 * be either at PL0, or else with interrupts enabled in the

	 * kernel, so either way we can re-enable interrupts here.

	 * kernel, so either way we can re-enable interrupts here

	 * unless we are doing atomic access to user space with

	 * interrupts disabled.

	 */

	 */

	if (!(regs->flags & PT_FLAGS_DISABLE_IRQ))

		local_irq_enable();

		local_irq_enable();





	mm = tsk->mm;

	mm = tsk->mm;