linux-kernel - Re: [RFC PATCH 26/33] irqchip/gic-v3-its: Add VPE affinity changes

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Date:   Mon, 13 Feb 2017 11:56:42 +0100 (CET)
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>
Subject: Re: [RFC PATCH 26/33] irqchip/gic-v3-its: Add VPE affinity changes

On Tue, 17 Jan 2017, Marc Zyngier wrote:

> When we're about to run a vcpu, it is crucial that the redistributor
> associated with the physical CPU is being told about the new residency.
> 
> This is abstracted by hijacking the irq_set_affinity method for the
> doorbell interrupt associated with the VPE. It is expected that the
> hypervisor will call this method before scheduling the VPE.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@....com>

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