linux-kernel - Re: [PATCH v5 19/23] KVM: arm64: GICv4.1: Allow SGIs to switch between HW and SW interrupts

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Message-ID: <10847ac8-af94-0a83-73ed-24039840ca74@huawei.com>
Date:   Fri, 20 Mar 2020 12:22:15 +0800
From:   Zenghui Yu <yuzenghui@...wei.com>
To:     Marc Zyngier <maz@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <kvmarm@...ts.cs.columbia.edu>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     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 v5 19/23] KVM: arm64: GICv4.1: Allow SGIs to switch
 between HW and SW interrupts

Hi Marc,

On 2020/3/5 4:33, Marc Zyngier wrote:
> In order to let a guest buy in the new, active-less SGIs, we
> need to be able to switch between the two modes.
> 
> Handle this by stopping all guest activity, transfer the state
> from one mode to the other, and resume the guest. Nothing calls
> this code so far, but a later patch will plug it into the MMIO
> emulation.
> 
> Signed-off-by: Marc Zyngier <maz@...nel.org>

Reviewed-by: Zenghui Yu <yuzenghui@...wei.com>


Thanks