linux-kernel - Re: [EXTERNAL] Re: [PATCH] PCI: hv: Do not set PCI_COMMAND

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Message-ID: <YmuzOJy/6F5wSjY7@lpieralisi>
Date:   Fri, 29 Apr 2022 10:43:20 +0100
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     Dexuan Cui <decui@...rosoft.com>
Cc:     Jake Oshins <jakeo@...rosoft.com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        "wei.liu@...nel.org" <wei.liu@...nel.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Michael Kelley (LINUX)" <mikelley@...rosoft.com>,
        "robh@...nel.org" <robh@...nel.org>, "kw@...ux.com" <kw@...ux.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>
Subject: Re: [EXTERNAL] Re: [PATCH] PCI: hv: Do not set PCI_COMMAND_MEMORY to
 reduce VM boot time

On Fri, Apr 29, 2022 at 01:11:29AM +0000, Dexuan Cui wrote:
> > From: Jake Oshins <jakeo@...rosoft.com>
> > Sent: Thursday, April 28, 2022 12:21 PM
> > ... 
> > Thanks everybody for responding to my questions.
> > 
> > Bjorn, from your response, it sounds like this change is safe until some possible
> > future which new functionality is introduced for rebalancing resources.
> > 
> > Dexuan, I don't have any further objection to the patch.
> > 
> > -- Jake Oshins
> 
> Thank all for the informative discussion!!
> 
> @Bjorn, Lorenzo: can this patch go through the hyperv tree?
> I see some recent pci-hyperv commits in the hyperv tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git

For this patch it should be fine as long as it does not become a rule,
we still want to be in the review loop for PCI hyper-V changes.

I will comment and ACK shortly.

Lorenzo