From: Gerd Hoffmann <kraxel@redhat.com>
To: Peter Wu <lekensteyn@gmail.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] chardev: add baud parameter for serial host device
Date: Mon, 10 Jun 2013 07:56:01 +0200 [thread overview]
Message-ID: <51B56A71.406@redhat.com> (raw)
In-Reply-To: <4543955.Y102znvq4W@al>
On 06/08/13 23:49, Peter Wu wrote:
> When QEMU starts, it always changes the serial port parameters including baud
> rate. This confused my guest which thought it was outputting at 9600 baud while
> it was in fact changed to 115200.
>
> After this patch, I can use `-serial /dev/ttyS0,baud=9600` to override the
> default baud rate of 115200.
I think we should just flip the default to 9600. IIRC this is the
power-on default baud rate of the 8250 uart family, so this should be
the qemu default too. If a guest wants to use a higher baudrate it has
to reprogram the uart anyway (and qemu will apply the guest changes to
the host uart).
cheers,
Gerd
next prev parent reply other threads:[~2013-06-10 5:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-08 21:49 [Qemu-devel] [PATCH] chardev: add baud parameter for serial host device Peter Wu
2013-06-10 5:56 ` Gerd Hoffmann [this message]
2013-06-10 8:42 ` Peter Wu
2013-06-10 12:58 ` Gerd Hoffmann
2013-06-10 13:23 ` Andreas Färber
2013-06-10 13:28 ` Peter Wu
2013-06-10 13:51 ` Peter Wu
2013-06-15 15:14 ` Eric Blake
2013-06-15 15:25 ` Peter Wu
2013-06-15 15:38 ` Eric Blake
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