diff options
Diffstat (limited to 'arch/powerpc/kernel/syscall_64.c')
| -rw-r--r-- | arch/powerpc/kernel/syscall_64.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/arch/powerpc/kernel/syscall_64.c b/arch/powerpc/kernel/syscall_64.c index a986effee1e0..cf06eb443a80 100644 --- a/arch/powerpc/kernel/syscall_64.c +++ b/arch/powerpc/kernel/syscall_64.c @@ -17,13 +17,19 @@ typedef long (*syscall_fn)(long, long, long, long, long, long); -/* Has to run notrace because it is entered "unreconciled" */ -notrace long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8, - unsigned long r0, struct pt_regs *regs) +/* Has to run notrace because it is entered not completely "reconciled" */ +notrace long system_call_exception(long r3, long r4, long r5, + long r6, long r7, long r8, + unsigned long r0, struct pt_regs *regs) { unsigned long ti_flags; syscall_fn f; + if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) + BUG_ON(irq_soft_mask_return() != IRQS_ALL_DISABLED); + + trace_hardirqs_off(); /* finish reconciling */ + if (IS_ENABLED(CONFIG_PPC_BOOK3S)) BUG_ON(!(regs->msr & MSR_RI)); BUG_ON(!(regs->msr & MSR_PR)); @@ -45,16 +51,6 @@ notrace long system_call_exception(long r3, long r4, long r5, long r6, long r7, kuap_check_amr(); /* - * A syscall should always be called with interrupts enabled - * so we just unconditionally hard-enable here. When some kind - * of irq tracing is used, we additionally check that condition - * is correct - */ - if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) { - WARN_ON(irq_soft_mask_return() != IRQS_ENABLED); - WARN_ON(local_paca->irq_happened); - } - /* * This is not required for the syscall exit path, but makes the * stack frame look nicer. If this was initialised in the first stack * frame, or if the unwinder was taught the first stack frame always @@ -62,7 +58,7 @@ notrace long system_call_exception(long r3, long r4, long r5, long r6, long r7, */ regs->softe = IRQS_ENABLED; - __hard_irq_enable(); + local_irq_enable(); ti_flags = current_thread_info()->flags; if (unlikely(ti_flags & _TIF_SYSCALL_DOTRACE)) { |