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powerpc/64/interrupt: Fix false warning in context tracking due to idle state 

Commit 171476775d ("context_tracking: Convert state to atomic_t")
added a CONTEXT_IDLE state which can be encountered by interrupts from
kernel mode in the idle thread, causing a false positive warning.

Fixes: 171476775d ("context_tracking: Convert state to atomic_t")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220926054305.2671436-2-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2022-09-26 15:42:59 +10:00 committed by Michael Ellerman
parent a5edf9815d
commit 56adbb7a8b
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/include/asm/interrupt.h
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@ -195,7 +195,8 @@ static inline void interrupt_enter_prepare(struct pt_regs *regs)
* so avoid recursion.
*/
if (TRAP(regs) != INTERRUPT_PROGRAM) {
CT_WARN_ON(ct_state() != CONTEXT_KERNEL);
CT_WARN_ON(ct_state() != CONTEXT_KERNEL &&
ct_state() != CONTEXT_IDLE);
if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
BUG_ON(is_implicit_soft_masked(regs));
}