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    SubjectRe: PREEMPT_RT and mptfusion

    * Serge Noiraud <serge.noiraud@bull.net> 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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