diff mbox series

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

Message ID 20220908131555.4079624-1-npiggin@gmail.com (mailing list archive)
State Superseded
Headers show
Series powerpc/64/interrupt: Fix false warning in context tracking due to idle state | expand

Checks

Context Check Description
snowpatch_ozlabs/github-powerpc_ppctests success Successfully ran 10 jobs.
snowpatch_ozlabs/github-powerpc_selftests success Successfully ran 10 jobs.
snowpatch_ozlabs/github-powerpc_clang success Successfully ran 6 jobs.
snowpatch_ozlabs/github-powerpc_sparse success Successfully ran 4 jobs.
snowpatch_ozlabs/github-powerpc_kernel_qemu success Successfully ran 23 jobs.

Commit Message

Nicholas Piggin Sept. 8, 2022, 1:15 p.m. UTC 
Commit 171476775d32 ("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: 171476775d32 ("context_tracking: Convert state to atomic_t")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/include/asm/interrupt.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/powerpc/include/asm/interrupt.h b/arch/powerpc/include/asm/interrupt.h
index 8069dbc4b8d1..b61555e30c7c 100644
--- a/arch/powerpc/include/asm/interrupt.h
+++ b/arch/powerpc/include/asm/interrupt.h
@@ -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));
 		}