Re: [v4 3/3] x86, irq: Define a global vector for VT-d Posted-Interrupts

From: Thomas Gleixner
Date: Fri May 15 2015 - 09:27:09 EST


On Thu, 30 Apr 2015, Feng Wu wrote:
> #ifdef CONFIG_HAVE_KVM
> +void (*wakeup_handler_callback)(void);
> +EXPORT_SYMBOL_GPL(wakeup_handler_callback);

The matching entry in a header file is going to come later again?

> /*
> * Handler for POSTED_INTERRUPT_VECTOR.
> */
> @@ -256,6 +259,30 @@ __visible void smp_kvm_posted_intr_ipi(struct pt_regs *regs)
>
> set_irq_regs(old_regs);
> }
> +
> +/*
> + * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
> + */
> +__visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs)
> +{
> + struct pt_regs *old_regs = set_irq_regs(regs);
> +
> + ack_APIC_irq();
> +
> + irq_enter();
> +
> + exit_idle();

entering_ack_irq() please

> + inc_irq_stat(kvm_posted_intr_wakeup_ipis);
> +
> + if (wakeup_handler_callback)
> + wakeup_handler_callback();
> +
> + irq_exit();
> +
> + set_irq_regs(old_regs);
> +}

Thanks,

tglx
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