linux-kernel - Re: [RFC/PATCH 0/1] virtio_mmio: hypervisor specific interfaces for MMIO

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Message-ID: <20200430104004.GA3204@quicinc.com>
Date:   Thu, 30 Apr 2020 16:10:05 +0530
From:   Srivatsa Vaddagiri <vatsa@...eaurora.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     konrad.wilk@...cle.com, jasowang@...hat.com,
        jan.kiszka@...mens.com, will@...nel.org,
        stefano.stabellini@...inx.com, iommu@...ts.linux-foundation.org,
        virtualization@...ts.linux-foundation.org,
        virtio-dev@...ts.oasis-open.org, tsoni@...eaurora.org,
        pratikp@...eaurora.org, christoffer.dall@....com,
        alex.bennee@...aro.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC/PATCH 0/1] virtio_mmio: hypervisor specific interfaces for
 MMIO

* Michael S. Tsirkin <mst@...hat.com> [2020-04-30 06:07:56]:

> On Thu, Apr 30, 2020 at 03:32:55PM +0530, Srivatsa Vaddagiri wrote:
> > The Type-1 hypervisor we are dealing with does not allow for MMIO transport. 
> 
> How about PCI then?

Correct me if I am wrong, but basically virtio_pci uses the same low-level
primitive as readl/writel on a platform such as ARM64? So similar issues
there also.

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