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From: Marc Zyngier <maz@kernel.org>
To: Shenming Lu <lushenming@huawei.com>
Cc: James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Eric Auger <eric.auger@redhat.com>,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Christoffer Dall <christoffer.dall@arm.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Kirti Wankhede <kwankhede@nvidia.com>,
	Cornelia Huck <cohuck@redhat.com>, Neo Jia <cjia@nvidia.com>,
	wanghaibin.wang@huawei.com, yuzenghui@huawei.com
Subject: Re: [RFC PATCH v1 3/4] KVM: arm64: GICv4.1: Restore VLPI's pending state to physical side
Date: Tue, 01 Dec 2020 10:55:20 +0000	[thread overview]
Message-ID: <2ad38077300bdcaedd2e3b073cd36743@kernel.org> (raw)
In-Reply-To: <48c10467-30f3-9b5c-bbcb-533a51516dc5@huawei.com>

On 2020-11-30 07:23, Shenming Lu wrote:

Hi Shenming,

> We are pondering over this problem these days, but still don't get a
> good solution...
> Could you give us some advice on this?
> 
> Or could we move the restoring of the pending states (include the sync
> from guest RAM and the transfer to HW) to the GIC VM state change 
> handler,
> which is completely corresponding to save_pending_tables (more 
> symmetric?)
> and don't expose GICv4...

What is "the GIC VM state change handler"? Is that a QEMU thing?
We don't really have that concept in KVM, so I'd appreciate if you could
be a bit more explicit on this.

Thanks,

         M.
-- 
Jazz is not dead. It just smells funny...

  reply	other threads:[~2020-12-01 10:56 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-23  6:54 [RFC PATCH v1 0/4] KVM: arm64: Add VLPI migration support on GICv4.1 Shenming Lu
2020-11-23  6:54 ` [RFC PATCH v1 1/4] irqchip/gic-v4.1: Plumb get_irqchip_state VLPI callback Shenming Lu
2020-11-23  9:01   ` Marc Zyngier
2020-11-24  7:38     ` Shenming Lu
2020-11-24  8:08       ` Marc Zyngier
2020-11-28  7:19   ` luojiaxing
2020-11-28 10:18     ` Marc Zyngier
2020-12-01  9:38       ` luojiaxing
2020-12-01 10:58         ` Marc Zyngier
2020-11-23  6:54 ` [RFC PATCH v1 2/4] KVM: arm64: GICv4.1: Try to save hw pending state in save_pending_tables Shenming Lu
2020-11-23  9:18   ` Marc Zyngier
2020-11-24  7:40     ` Shenming Lu
2020-11-24  8:26       ` Marc Zyngier
2020-11-24 13:10         ` Shenming Lu
2020-11-23  6:54 ` [RFC PATCH v1 3/4] KVM: arm64: GICv4.1: Restore VLPI's pending state to physical side Shenming Lu
2020-11-23  9:27   ` Marc Zyngier
2020-11-24  8:10     ` Shenming Lu
2020-11-24  8:44       ` Marc Zyngier
2020-11-24 13:12         ` Shenming Lu
2020-11-30  7:23           ` Shenming Lu
2020-12-01 10:55             ` Marc Zyngier [this message]
2020-12-01 11:40               ` Shenming Lu
2020-12-01 11:50                 ` Marc Zyngier
2020-12-01 12:15                   ` Shenming Lu
2020-12-08  8:25                     ` Shenming Lu
2020-12-16 10:35                     ` Auger Eric
2020-12-17  4:19                       ` Shenming Lu
2020-11-23  6:54 ` [RFC PATCH v1 4/4] KVM: arm64: GICv4.1: Give a chance to save VLPI's pending state Shenming Lu

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