From: Nicholas Piggin npiggin@gmail.com
[ Upstream commit 2b48e96be2f9f7151197fd25dc41487054bc6f5b ]
Replayed interrupts get an "artificial" struct pt_regs constructed to pass to interrupt handler functions. This did not get the softe field set correctly, it's as though the interrupt has hit while irqs are disabled. It should be IRQS_ENABLED.
This is possibly harmless, asynchronous handlers should not be testing if irqs were disabled, but it might be possible for example some code is shared with synchronous or NMI handlers, and it makes more sense if debug output looks at this.
Fixes: 3282a3da25bd ("powerpc/64: Implement soft interrupt replay in C") Signed-off-by: Nicholas Piggin npiggin@gmail.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20200915114650.3980244-2-npiggin@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/irq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 297ee79febc6c..3a22281a8264e 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -214,7 +214,7 @@ void replay_soft_interrupts(void) struct pt_regs regs;
ppc_save_regs(®s); - regs.softe = IRQS_ALL_DISABLED; + regs.softe = IRQS_ENABLED;
again: if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))