linux-kernel - Re: [PATCH v5 0/6] KVM: arm64: Add VLPI migration support on GICv4.1

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Message-Id: <161660992482.2080654.11109199563385851665.b4-ty@kernel.org>
Date:   Wed, 24 Mar 2021 18:19:25 +0000
From:   Marc Zyngier <maz@...nel.org>
To:     Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, Eric Auger <eric.auger@...hat.com>,
        kvmarm@...ts.cs.columbia.edu, linux-arm-kernel@...ts.infradead.org,
        Shenming Lu <lushenming@...wei.com>
Cc:     Alex Williamson <alex.williamson@...hat.com>, yuzenghui@...wei.com,
        wanghaibin.wang@...wei.com,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Cornelia Huck <cohuck@...hat.com>
Subject: Re: [PATCH v5 0/6] KVM: arm64: Add VLPI migration support on GICv4.1

On Mon, 22 Mar 2021 14:01:52 +0800, Shenming Lu wrote:
> In GICv4.1, migration has been supported except for (directly-injected)
> VLPI. And GICv4.1 Spec explicitly gives a way to get the VLPI's pending
> state (which was crucially missing in GICv4.0). So we make VLPI migration
> capable on GICv4.1 in this series.
> 
> In order to support VLPI migration, we need to save and restore all
> required configuration information and pending states of VLPIs. But
> in fact, the configuration information of VLPIs has already been saved
> (or will be reallocated on the dst host...) in vgic(kvm) migration.
> So we only have to migrate the pending states of VLPIs specially.
> 
> [...]

Applied to next, thanks!

[1/6] irqchip/gic-v3-its: Add a cache invalidation right after vPE unmapping
      commit: 301beaf19739cb6e640ed44e630e7da993f0ecc8
[2/6] irqchip/gic-v3-its: Drop the setting of PTZ altogether
      commit: c21bc068cdbe5613d3319ae171c3f2eb9f321352
[3/6] KVM: arm64: GICv4.1: Add function to get VLPI state
      commit: 80317fe4a65375fae668672a1398a0fb73eb9023
[4/6] KVM: arm64: GICv4.1: Try to save VLPI state in save_pending_tables
      commit: f66b7b151e00427168409f8c1857970e926b1e27
[5/6] KVM: arm64: GICv4.1: Restore VLPI pending state to physical side
      commit: 12df7429213abbfa9632ab7db94f629ec309a58b
[6/6] KVM: arm64: GICv4.1: Give a chance to save VLPI state
      commit: 8082d50f4817ff6a7e08f4b7e9b18e5f8bfa290d

Cheers,

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