linux-kernel - Re: [PATCH v1 2/2] KVM: arm64: allow the VM to select DEVICE_* and NORMAL

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Message-ID: <20231005115630.GL682044@nvidia.com>
Date:   Thu, 5 Oct 2023 08:56:30 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Lorenzo Pieralisi <lpieralisi@...nel.org>
Cc:     Catalin Marinas <catalin.marinas@....com>, ankita@...dia.com,
        maz@...nel.org, oliver.upton@...ux.dev, will@...nel.org,
        aniketa@...dia.com, cjia@...dia.com, kwankhede@...dia.com,
        targupta@...dia.com, vsethi@...dia.com, acurrid@...dia.com,
        apopple@...dia.com, jhubbard@...dia.com, danw@...dia.com,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/2] KVM: arm64: allow the VM to select DEVICE_* and
 NORMAL_NC for IO memory

On Thu, Oct 05, 2023 at 11:56:55AM +0200, Lorenzo Pieralisi wrote:
> On Tue, Sep 26, 2023 at 02:52:13PM +0100, Catalin Marinas wrote:
> 
> [...]
> 
> > Anyway, the text looks fine to me. Thanks for putting it together
> > Lorenzo.
> 
> Thanks !
> 
> > One thing not mentioned here is that pci-vfio still maps such memory as
> > Device-nGnRnE in user space and relaxing this potentially creates an
> > alias. But such alias is only relevant of both the VMM and the VM try to
> > access the same device which I doubt is a realistic scenario.
> 
> A revised log, FWIW:

What is the plan here, do you want Ankit to resend the series with
this text?

There were no comments on patch 1/2?

Thanks,
Jason