From: Avi Kivity <avi@redhat.com>
To: Jordan Justen <jljusten@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] Implement PC port80 debug register.
Date: Mon, 29 Jun 2009 18:36:43 +0300 [thread overview]
Message-ID: <4A48DF8B.7050606@redhat.com> (raw)
In-Reply-To: <2a50f7880906290826t4128b11dyc68a36fd01e8208c@mail.gmail.com>
On 06/29/2009 06:26 PM, Jordan Justen wrote:
> Avi,
>
> Well, I am not sure if this it globally the case for PC motherboards,
> but in my experience, it has been read/write.
It's just some random memory that might not actually be grounded in reality.
>
> At least for a system such as qemu, it make it difficult to use the
> port80 checkpoint of software without being able to read the last
> value written.
Why would software ever need to read it? You want a monitor command so
the user can read it. I don't recall ever seeing a read of port 80 (I
don't have any objections to that though).
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-06-29 15:35 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-29 8:05 [Qemu-devel] [PATCH] Implement PC port80 debug register Jordan Justen
2009-06-29 13:47 ` Anthony Liguori
2009-06-29 14:17 ` Paul Brook
2009-06-29 14:23 ` Avi Kivity
2009-06-29 14:34 ` Chris Lalancette
2009-06-29 15:26 ` Jordan Justen
2009-06-29 15:31 ` Anthony Liguori
2009-06-29 16:07 ` Jordan Justen
2009-06-29 17:11 ` Avi Kivity
2009-06-29 18:39 ` Anthony Liguori
2009-06-29 18:43 ` Avi Kivity
2009-06-29 18:46 ` Alexander Graf
2009-06-29 18:57 ` Avi Kivity
2009-06-29 19:00 ` Jordan Justen
2009-06-29 19:02 ` Jordan Justen
2009-07-01 7:39 ` Jordan Justen
2009-07-09 18:58 ` Anthony Liguori
2009-06-29 15:36 ` Avi Kivity [this message]
2009-06-29 21:53 ` Jamie Lokier
2009-06-29 23:18 ` Carl-Daniel Hailfinger
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