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SubjectRe: [PATCH] x86_64 irq: check remote IRR bit before migrating level triggered irq (v2)

looks good to me:

Acked-by: Ingo Molnar <mingo@elte.hu>

with a few minor style nits:

> +static int io_apic_level_ack_pending(unsigned int irq)
> +{
> + struct irq_pin_list *entry;
> + unsigned long flags;
> + int pending = 0;
> + spin_lock_irqsave(&ioapic_lock, flags);

newline after variable sections please.

> + entry = irq_2_pin + irq;
> + for (;;) {
> + unsigned int reg;
> + int pin;
> + pin = entry->pin;

ditto.

> + if (pin == -1)
> + break;
> + reg = io_apic_read(entry->apic, 0x10 + pin*2);
> + /* Is the remote IRR bit set? */
> + pending |= (reg >> 14) & 1;
> + if (!entry->next)
> + break;
> + entry = irq_2_pin + entry->next;
> + }
> + spin_unlock_irqrestore(&ioapic_lock, flags);
> + return pending;

optional: it looks a bit better with a newline before the 'return'
statement.

> +}
> +
> +

and here there's one too much newline :-)

Ingo
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