From: Peter Maydell <peter.maydell@linaro.org>
To: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Shannon Zhao <zhaoshenglong@huawei.com>,
qemu-arm <qemu-arm@nongnu.org>,
QEMU Developers <qemu-devel@nongnu.org>,
"Jason A . Donenfeld" <Jason@zx2c4.com>,
Drew Jones <drjones@redhat.com>,
Andrea Bolognani <abologna@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 3/3] hw/arm/virt-acpi-build: Add second UART to ACPI tables
Date: Tue, 12 Dec 2017 12:07:38 +0000 [thread overview]
Message-ID: <CAFEAcA_+NnpeP9Le7bp9yrYQDwtuP79pt8GpVzJ4RBDMx1iomA@mail.gmail.com> (raw)
In-Reply-To: <5e3798f7-e280-b6c3-1504-828283617c52@redhat.com>
On 12 December 2017 at 11:59, Laszlo Ersek <lersek@redhat.com> wrote:
> Peter, what is the intended use of the second UART?
Per the commit message:
# there are some
# use cases where having a second UART would be useful (like
# bare-metal testing where you don't really want to have to
# probe and set up a PCI device just to have a second comms
# channel).
>From QEMU's point of view this is just "some people would like
more than one UART, x86 provides more than one UART, it's
easy to provide an extra UART and it's up to the guest what
it would like to do with it". If there's utility for the
OVMF firmware in having 2 UARTs that's doubly good reason
to have it.
thanks
-- PMM
next prev parent reply other threads:[~2017-12-12 12:08 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-08 15:02 [Qemu-devel] [PATCH 0/3] hw/arm/virt: Add another UART Peter Maydell
2017-12-08 15:02 ` [Qemu-devel] [PATCH 1/3] hw/arm/virt: Add virt-2.12 machine type Peter Maydell
2017-12-12 14:39 ` Andrew Jones
2018-01-15 12:00 ` Peter Maydell
2017-12-08 15:02 ` [Qemu-devel] [PATCH 2/3] hw/arm/virt: Add another UART to the virt board Peter Maydell
2017-12-12 5:55 ` Shannon Zhao
2017-12-12 10:45 ` Peter Maydell
2017-12-12 14:25 ` Jason A. Donenfeld
2017-12-12 14:45 ` Andrew Jones
2017-12-12 14:50 ` Peter Maydell
2017-12-12 15:16 ` Andrew Jones
2017-12-12 15:51 ` Peter Maydell
2018-05-31 2:12 ` Jason A. Donenfeld
2018-05-31 8:32 ` Peter Maydell
2018-05-31 11:48 ` Jason A. Donenfeld
2018-05-31 11:57 ` Peter Maydell
2017-12-12 15:16 ` Andrew Jones
2017-12-08 15:02 ` [Qemu-devel] [PATCH 3/3] hw/arm/virt-acpi-build: Add second UART to ACPI tables Peter Maydell
2017-12-12 5:53 ` Shannon Zhao
2017-12-12 11:06 ` Laszlo Ersek
2017-12-12 11:11 ` Peter Maydell
2017-12-12 11:33 ` Laszlo Ersek
2017-12-12 11:44 ` Ard Biesheuvel
2017-12-12 11:59 ` Laszlo Ersek
2017-12-12 12:07 ` Peter Maydell [this message]
2017-12-12 12:41 ` Laszlo Ersek
2017-12-12 12:47 ` Peter Maydell
2017-12-12 13:28 ` Laszlo Ersek
2017-12-12 13:56 ` Ard Biesheuvel
2017-12-12 14:10 ` Peter Maydell
2017-12-12 14:12 ` Ard Biesheuvel
2017-12-12 14:13 ` Peter Maydell
2017-12-12 14:16 ` Ard Biesheuvel
2017-12-12 14:17 ` Peter Maydell
2017-12-12 14:31 ` Ard Biesheuvel
2017-12-12 14:51 ` Andrew Jones
2017-12-12 16:38 ` Laszlo Ersek
2017-12-12 14:18 ` Andrew Jones
2017-12-12 14:10 ` Andrew Jones
2017-12-12 15:09 ` Andrew Jones
2017-12-13 13:56 ` Peter Maydell
2017-12-13 16:01 ` Laszlo Ersek
2017-12-13 16:46 ` Ard Biesheuvel
2017-12-13 16:48 ` Peter Maydell
2017-12-08 15:10 ` [Qemu-devel] [Qemu-arm] [PATCH 0/3] hw/arm/virt: Add another UART Peter Maydell
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