Re: PREEMPT_RT and mptfusion

[Serge Noiraud]

Le mer 06/07/2005 à 16:31, Ingo Molnar a écrit :
> * 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)

Same problem with this patch and CONFIG_PCI_MSI=y
This is not the solution.

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