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powerpc/64: add context tracking to asynchronous interrupts

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Previously context tracking was not done for asynchronous interrupts,
(those that run in interrupt context), and if those would cause a
reschedule when they exit, then scheduling functions (schedule_user,
preempt_schedule_irq) call exception_enter/exit to fix this up and
exit user context.

This is a hack we would like to get away from, so do context tracking
for asynchronous interrupts too.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-34-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2021-01-30 23:08:43 +10:00 committed by Michael Ellerman
parent 540d4d34be
commit 6fdb0f410b
1 changed files with 2 additions and 0 deletions
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arch/powerpc/include/asm/interrupt.h
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@ -42,10 +42,12 @@ static inline void interrupt_exit_prepare(struct pt_regs *regs, struct interrupt
static inline void interrupt_async_enter_prepare(struct pt_regs *regs, struct interrupt_state *state)
{
interrupt_enter_prepare(regs, state);
}
static inline void interrupt_async_exit_prepare(struct pt_regs *regs, struct interrupt_state *state)
{
interrupt_exit_prepare(regs, state);
}
struct interrupt_nmi_state {