Re: PREEMPT_RT and mptfusion

[Ingo Molnar]

* Serge Noiraud <serge.noiraud@xxxxxxxx> wrote:

> > Yes it was 50-47.
> > CONFIG_X86_UP_IOAPIC is not present in my .config
> > CONFIG_PCI_MSI is set to yes.
> > 
> > I'll try with CONFIG_PCI_MSI=n
> It's OK for me. good job.

good. But it would be nice to make it work with PCI_MSI=y too. Does 
PCI_MSI=y work if you apply the patch below?

	Ingo

--- linux/arch/i386/kernel/io_apic.c.orig
+++ linux/arch/i386/kernel/io_apic.c
@@ -2136,11 +2136,7 @@ static void end_level_ioapic_vector (uns
 {
 	int irq = vector_to_irq(vector);
 
-#ifdef CONFIG_PREEMPT_HARDIRQS
-	if (!(irq_desc[vector].status & (IRQ_DISABLED | IRQ_INPROGRESS)) &&
-							irq_desc[vector].action)
-#endif
-		end_level_ioapic_irq(irq);
+	end_level_ioapic_irq(irq);
 }
 
 static void enable_level_ioapic_vector(unsigned int vector)
-
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