From: Paolo Bonzini <pbonzini@redhat.com>
To: Alexander Graf <agraf@suse.de>
Cc: Kevin Wolf <kwolf@redhat.com>,
Anthony Liguori <anthony@codemonkey.ws>,
Jason Baron <jbaron@redhat.com>,
Markus Armbruster <armbru@redhat.com>,
qemu-devel@nongnu.org, Gerd Hoffmann <kraxel@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] On block interface types in general, IF_AHCI in particular
Date: Wed, 31 Oct 2012 15:46:05 +0100 [thread overview]
Message-ID: <509139AD.3000207@redhat.com> (raw)
In-Reply-To: <9D91D287-B449-49D9-BEEA-DDBF291EB9B9@suse.de>
Il 31/10/2012 15:43, Alexander Graf ha scritto:
>
> On 31.10.2012, at 15:40, Paolo Bonzini wrote:
>
>> Il 31/10/2012 15:20, Markus Armbruster ha scritto:
>>> One more thing: on a *major* upgrade, I'd rather deal with
>>> immediately obvious breakage (does not boot) than rotten
>>> performance.
>>>
>>> If we make "q35 with compat IDE" the default, we'll have to tell
>>> users many, many times not to use the default :(
>>
>> Well, compat IDE is not on the same league as writethrough for bad
>> performance, and virtio is anyway the better choice (and not
>> available just with a different machine type).
>
> Are you seriously considering to carry that IDE legacy around simply
> because we are too dumb to create working command line options? AHCI
> gets you at least parallel disk access, so in most cases it's a lot
> more sane than IDE.
What's wrong with "-M q35" (which would go along with "-M piix" for
absolute legacy)?
I'm just saying that the default machine type ("-M pc") should boot
Windows XP.
Paolo
next prev parent reply other threads:[~2012-10-31 14:46 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-30 14:43 [Qemu-devel] On block interface types in general, IF_AHCI in particular Markus Armbruster
2012-10-30 15:16 ` Jason Baron
2012-10-30 16:31 ` Paolo Bonzini
2012-10-30 17:04 ` Kevin Wolf
2012-10-30 19:03 ` Anthony Liguori
2012-10-30 21:12 ` Anthony Liguori
2012-10-31 13:58 ` Markus Armbruster
2012-10-31 14:01 ` Peter Maydell
2012-10-31 14:09 ` Paolo Bonzini
2012-10-31 14:20 ` Markus Armbruster
2012-10-31 14:40 ` Paolo Bonzini
2012-10-31 14:43 ` Alexander Graf
2012-10-31 14:46 ` Paolo Bonzini [this message]
2012-10-31 16:00 ` Anthony Liguori
2012-10-31 16:05 ` Alexander Graf
2012-10-31 16:46 ` Anthony Liguori
2012-10-31 16:57 ` Alexander Graf
2012-10-31 18:32 ` Anthony Liguori
2012-10-31 16:48 ` Paolo Bonzini
2012-10-31 16:21 ` Kevin Wolf
2012-10-31 16:32 ` Paolo Bonzini
2012-10-31 16:35 ` Alexander Graf
2012-10-31 16:50 ` Paolo Bonzini
2012-11-01 8:50 ` Gerd Hoffmann
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