linux-kernel - Re: [PATCH v4 08/20] irqchip/gic-v4.1: Plumb get/set_irqchip

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Message-ID: <8c538d2e-5ec8-0fd0-8999-e43a847df4c1@huawei.com>
Date:   Wed, 19 Feb 2020 23:18:16 +0800
From:   Zenghui Yu <yuzenghui@...wei.com>
To:     Marc Zyngier <maz@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <kvmarm@...ts.cs.columbia.edu>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Jason Cooper <jason@...edaemon.net>,
        "Robert Richter" <rrichter@...vell.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Eric Auger" <eric.auger@...hat.com>,
        James Morse <james.morse@....com>,
        "Julien Thierry" <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>
Subject: Re: [PATCH v4 08/20] irqchip/gic-v4.1: Plumb get/set_irqchip_state
 SGI callbacks

On 2020/2/19 19:50, Zenghui Yu wrote:
> 3. it looks like KVM makes the assumption that the per-RD MMIO region
> will only be accessed by the associated VCPU?  But I think this's not
> restricted by the architecture, we can do it better.  Or I've just
> missed some important points here.

(After some basic tests, KVM actually does the right thing!)
So I must have some mis-understanding on this point, please
ignore it.  I'll dig it further myself, sorry for the noisy.


Thanks,
Zenghui