linux-kernel - Re: [RFC PATCH] KVM: arm/arm64: GICv4: Support shared VLPI

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Message-ID: <86sf4ibb8a.wl-maz@kernel.org>
Date:   Mon, 04 Dec 2023 08:52:53 +0000
From:   Marc Zyngier <maz@...nel.org>
To:     Jason Wang <jasowang@...hat.com>
Cc:     Kunkun Jiang <jiangkunkun@...wei.com>, dongli.zhang@...cle.com,
        cohuck@...hat.com, stefanha@...hat.com, mst@...hat.com,
        Oliver Upton <oliver.upton@...ux.dev>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Gavin Shan <gshan@...hat.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        "open list:IRQCHIP DRIVERS" <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        wanghaibin.wang@...wei.com
Subject: Re: [RFC PATCH] KVM: arm/arm64: GICv4: Support shared VLPI

On Mon, 04 Dec 2023 08:39:00 +0000,
Jason Wang <jasowang@...hat.com> wrote:
> 
> > Honestly, the virtio driver is broken (irrespective of the
> > architecture), and incompatible with the GIC architecture.
> 
> No matter how the driver is written, the host/KVM should be able to
> survive from that.

The host is perfectly fine, thanks for asking. The guest, however, is
in a bad shape.

	M.

-- 
Without deviation from the norm, progress is not possible.