linux-kernel - Re: [PATCH v2 01/52] genirq: Let irq_set_vcpu

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Message-ID: <alpine.DEB.2.20.1707042315370.2131@nanos>
Date:   Tue, 4 Jul 2017 23:15:49 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Marc Zyngier <marc.zyngier@....com>
cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.cs.columbia.edu,
        Christoffer Dall <christoffer.dall@...aro.org>,
        Jason Cooper <jason@...edaemon.net>,
        Eric Auger <eric.auger@...hat.com>,
        Shanker Donthineni <shankerd@...eaurora.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v2 01/52] genirq: Let irq_set_vcpu_affinity() iterate
 over hierarchy



On Wed, 28 Jun 2017, Marc Zyngier wrote:

> When assigning an interrupt to a vcpu, it is not unlikely that
> the level of the hierarchy implementing irq_set_vcpu_affinity
> is not the top level (think a generic MSI domain on top of a
> virtualization aware interrupt controller).
> 
> In such a case, let's iterate over the hierarchy until we find
> an irqchip implementing it.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@....com>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>