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From: Peter Maydell <peter.maydell@linaro.org>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Cc: Eduardo Habkost <ehabkost@redhat.com>, schspa <schspa@gmail.com>,
	Kevin Zhao <kevin.zhao@linaro.org>,
	Alistair Francis <alistair@alistair23.me>,
	QEMU Developers <qemu-devel@nongnu.org>,
	Markus Armbruster <armbru@redhat.com>,
	qemu-arm <qemu-arm@nongnu.org>
Subject: Re: [PATCH] arm: xlnx-versal: fix virtio-mmio base address assignment
Date: Fri, 5 Feb 2021 11:18:28 +0000	[thread overview]
Message-ID: <CAFEAcA-+dS5r5LvW5DTEH2vBrm1S2rs7sjjh2V7zjtD6ut0wBw@mail.gmail.com> (raw)
In-Reply-To: <aa8ccb78-c977-20fa-a814-4223b678d9c4@amsat.org>

On Fri, 5 Feb 2021 at 10:31, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> 1/ virtio-mmio must be sysbus-device,

Yes.

> 2/ we can not sysbus-map out of main memory so private container
> is incorrect, and Versal can not use "mr-ps-switch"?

No. If you have a sysbus device, and you want to map it somewhere
other than into system-memory-map, you can do that: you use
sysbus_mmio_get_region() to get the MemoryRegion*, and then map
it into whatever container you need with memory_region_add_subregion().

thanks
-- PMM


  reply	other threads:[~2021-02-05 11:20 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-04  6:58 [PATCH] arm: xlnx-versal: fix virtio-mmio base address assignment schspa
2021-02-04  8:19 ` Philippe Mathieu-Daudé
2021-02-04  9:04   ` schspa
2021-02-05  7:53     ` Philippe Mathieu-Daudé
2021-02-05 10:03       ` Peter Maydell
2021-02-05 10:31         ` Philippe Mathieu-Daudé
2021-02-05 11:18           ` Peter Maydell [this message]
2021-02-05 14:08             ` Edgar E. Iglesias
2021-02-08  5:34               ` schspa
2021-02-08 11:57                 ` Laszlo Ersek
2021-02-08 12:59               ` Peter Maydell
2021-02-25  5:36                 ` [PATCH v4] virtio-mmio: improve virtio-mmio get_dev_path alog schspa
2021-03-05 11:57                   ` Peter Maydell
2021-03-06  2:28                     ` Shi Schspa
2021-02-25  6:35                 ` [PATCH] arm: xlnx-versal: fix virtio-mmio base address assignment schspa

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