From: Gleb Natapov <gleb@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Avi Kivity <avi@redhat.com>, Blue Swirl <blauwirbel@gmail.com>,
Chris Wright <chrisw@redhat.com>,
Markus Armbruster <armbru@redhat.com>,
kvm@vger.kernel.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] KVM call minutes for Feb 8
Date: Sun, 13 Feb 2011 20:08:09 +0200 [thread overview]
Message-ID: <20110213180809.GA16327@redhat.com> (raw)
In-Reply-To: <4D580D3E.3000300@codemonkey.ws>
On Sun, Feb 13, 2011 at 10:56:30AM -0600, Anthony Liguori wrote:
> >>
> >>qemu -device i440fx,id=nb -device piix3,id=sb,chipset=nb -device
> >>ioapic,id=ioapic,chipset=sb -device
> >>cpu,ioapic=ioapic,northbridge=nb
> >>
> >>Is not all that unreasonable and presents a fully functioning PC.
> >
> >Sure. And -M blah is a shortcut.
>
> Exactly. Or better yet, blah is a config file that contains
>
> [device "nb"]
> driver=i440fx
>
You are trying to model how particular (very ancient) HW looked like,
instead of emulating guest visible functionality, but is dead end since
things are changing constantly. Northbridge functionality moves onto
cpu for instance. What CPU i440fx was designed for? Pentium? What if
user runs QEMU with emulated CPU that in real life has internal memory
controller? Does you config have sense for such setup? Should we allow
to specify only Pentium CPU since this is how real HW worked?
> [device "sb"]
> driver=piix3
And piix3 refers to piix3.cfg which describe devices that present on the
chipset.
> chipset=nb
>
> [device "ioapic"]
> driver=ioapic
> chipset=sb
Here, for instance, IOAPIC is included in a chipset for a long time
now. Why user should care that piix3 didn't have it. How this detail
changes qemu functionality? If it doesn't why should we expose it?
>
> [device "cpu"]
> driver=cpu
> ioapic=ioapic
Why ioapic here? Doesn't cpu talks to ioapic via northbridge?
> northbridge=nb
>
--
Gleb.
next prev parent reply other threads:[~2011-02-13 18:08 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-08 15:55 KVM call minutes for Feb 8 Chris Wright
2011-02-08 16:14 ` Stefan Hajnoczi
2011-02-08 16:39 ` [Qemu-devel] " Anthony Liguori
2011-02-08 17:13 ` Markus Armbruster
2011-02-08 19:02 ` Peter Maydell
2011-02-08 21:11 ` Anthony Liguori
2011-02-09 8:11 ` Markus Armbruster
2011-02-09 8:20 ` Peter Maydell
2011-02-09 9:02 ` Markus Armbruster
2011-02-08 19:30 ` Alexander Graf
2011-02-08 19:30 ` Aurelien Jarno
2011-02-09 8:23 ` Markus Armbruster
2011-02-09 10:43 ` Anthony Liguori
2011-02-09 17:38 ` Blue Swirl
2011-02-08 21:12 ` Anthony Liguori
2011-02-09 8:01 ` Markus Armbruster
2011-02-09 10:31 ` Anthony Liguori
2011-02-09 12:28 ` Markus Armbruster
2011-02-09 14:44 ` Anthony Liguori
2011-02-09 17:48 ` Blue Swirl
2011-02-09 19:53 ` Anthony Liguori
2011-02-09 19:59 ` Anthony Liguori
2011-02-09 20:15 ` Blue Swirl
2011-02-10 7:47 ` Anthony Liguori
2011-02-10 8:16 ` Peter Maydell
2011-02-10 8:36 ` Anthony Liguori
2011-02-10 9:04 ` Peter Maydell
2011-02-10 10:13 ` Anthony Liguori
2011-02-10 10:38 ` Peter Maydell
2011-02-10 11:24 ` Gleb Natapov
2011-02-10 12:23 ` Anthony Liguori
2011-02-10 13:06 ` Peter Maydell
2011-02-10 19:17 ` Scott Wood
2011-02-10 19:22 ` Peter Maydell
2011-02-10 19:29 ` Scott Wood
2011-02-10 9:07 ` Gleb Natapov
2011-02-10 10:00 ` Anthony Liguori
2011-02-10 10:10 ` Gleb Natapov
2011-02-10 10:19 ` Anthony Liguori
2011-02-10 10:49 ` Gleb Natapov
2011-02-10 12:47 ` Anthony Liguori
2011-02-10 13:12 ` Gleb Natapov
2011-02-10 10:25 ` Avi Kivity
2011-02-10 11:13 ` Gleb Natapov
2011-02-10 12:51 ` Anthony Liguori
2011-02-10 13:00 ` Avi Kivity
2011-02-10 13:29 ` Gleb Natapov
2011-02-10 14:00 ` Anthony Liguori
2011-02-10 13:27 ` Gleb Natapov
2011-02-10 14:04 ` Anthony Liguori
2011-02-10 14:20 ` Gleb Natapov
2011-02-10 16:05 ` Anthony Liguori
2011-02-11 18:14 ` Blue Swirl
2011-02-13 9:24 ` Gleb Natapov
2011-02-13 15:31 ` Anthony Liguori
2011-02-13 19:37 ` Blue Swirl
2011-02-13 19:57 ` Anthony Liguori
2011-02-13 21:00 ` Blue Swirl
2011-02-13 22:42 ` Anthony Liguori
2011-02-14 17:31 ` Blue Swirl
2011-02-14 20:53 ` Anthony Liguori
2011-02-14 21:25 ` Blue Swirl
2011-02-14 21:47 ` Anthony Liguori
2011-02-15 17:11 ` Blue Swirl
2011-02-15 23:07 ` Anthony Liguori
2011-02-16 9:52 ` Gleb Natapov
2011-02-14 9:44 ` Paolo Bonzini
2011-02-10 10:29 ` Avi Kivity
2011-02-13 15:38 ` Anthony Liguori
2011-02-13 15:56 ` Avi Kivity
2011-02-13 16:56 ` Anthony Liguori
2011-02-13 18:08 ` Gleb Natapov [this message]
2011-02-13 19:38 ` Anthony Liguori
2011-02-14 10:23 ` Gleb Natapov
2011-02-13 21:24 ` Peter Maydell
2011-02-13 22:43 ` Anthony Liguori
2011-02-13 23:35 ` Peter Maydell
2011-02-13 15:39 ` Anthony Liguori
2011-02-11 17:54 ` Blue Swirl
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110213180809.GA16327@redhat.com \
--to=gleb@redhat.com \
--cc=anthony@codemonkey.ws \
--cc=armbru@redhat.com \
--cc=avi@redhat.com \
--cc=blauwirbel@gmail.com \
--cc=chrisw@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox