From: Anthony Liguori <anthony@codemonkey.ws>
To: dlaor@redhat.com
Cc: Avi Kivity <avi@redhat.com>, kvm-devel <kvm@vger.kernel.org>,
Gleb Natapov <gleb@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
John Cooper <john.cooper@redhat.com>,
Alexander Graf <agraf@suse.de>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] cpuid problem in upstream qemu with kvm
Date: Thu, 07 Jan 2010 05:39:23 -0600 [thread overview]
Message-ID: <4B45C7EB.1010501@codemonkey.ws> (raw)
In-Reply-To: <4B45AC18.8040003@redhat.com>
On 01/07/2010 03:40 AM, Dor Laor wrote:
>> There's no simple solution except to restrict features to what was
>> available on the first processors.
>
> What's not simple about the above 4 options?
> What's a better alternative (that insures users understand it and use
> it and guest msi and even skype application is happy about it)?
Even if you have -cpu Nehalem, different versions of the KVM kernel
module may additionally filter cpuid flags.
So if you had a 2.6.18 kernel and a 2.6.33 kernel, it may be necessary
to say:
(2.6.33) qemu -cpu Nehalem,-syscall
(2.6.18) qemu -cpu Nehalem
In order to be compatible.
Regards,
Anthony Liguori
WARNING: multiple messages have this Message-ID (diff)
From: Anthony Liguori <anthony@codemonkey.ws>
To: dlaor@redhat.com
Cc: kvm-devel <kvm@vger.kernel.org>, Gleb Natapov <gleb@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
John Cooper <john.cooper@redhat.com>,
Alexander Graf <agraf@suse.de>,
qemu-devel@nongnu.org, Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] cpuid problem in upstream qemu with kvm
Date: Thu, 07 Jan 2010 05:39:23 -0600 [thread overview]
Message-ID: <4B45C7EB.1010501@codemonkey.ws> (raw)
In-Reply-To: <4B45AC18.8040003@redhat.com>
On 01/07/2010 03:40 AM, Dor Laor wrote:
>> There's no simple solution except to restrict features to what was
>> available on the first processors.
>
> What's not simple about the above 4 options?
> What's a better alternative (that insures users understand it and use
> it and guest msi and even skype application is happy about it)?
Even if you have -cpu Nehalem, different versions of the KVM kernel
module may additionally filter cpuid flags.
So if you had a 2.6.18 kernel and a 2.6.33 kernel, it may be necessary
to say:
(2.6.33) qemu -cpu Nehalem,-syscall
(2.6.18) qemu -cpu Nehalem
In order to be compatible.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2010-01-07 11:39 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-14 19:35 [Qemu-devel] cpuid problem in upstream qemu with kvm Michael S. Tsirkin
2009-12-14 19:44 ` Anthony Liguori
2009-12-14 19:44 ` Michael S. Tsirkin
2009-12-14 19:57 ` Anthony Liguori
2009-12-14 20:00 ` Gleb Natapov
2009-12-14 20:02 ` Anthony Liguori
2009-12-14 20:08 ` Gleb Natapov
2009-12-14 20:14 ` Michael S. Tsirkin
2009-12-14 20:10 ` Michael S. Tsirkin
2009-12-14 20:18 ` Anthony Liguori
2009-12-14 20:31 ` Michael S. Tsirkin
2009-12-14 20:54 ` Anthony Liguori
2009-12-14 21:10 ` Michael S. Tsirkin
2009-12-14 21:49 ` Anthony Liguori
2009-12-15 14:28 ` Michael S. Tsirkin
2009-12-15 17:37 ` Anthony Liguori
2009-12-15 17:56 ` Michael S. Tsirkin
2009-12-20 9:42 ` Avi Kivity
2009-12-20 9:49 ` Avi Kivity
2009-12-20 14:48 ` Anthony Liguori
2009-12-20 14:55 ` Avi Kivity
2009-12-20 15:33 ` Anthony Liguori
2009-12-20 15:36 ` Avi Kivity
2009-12-20 15:38 ` Gleb Natapov
2009-12-20 15:40 ` Avi Kivity
2009-12-20 15:49 ` Michael S. Tsirkin
2009-12-20 15:53 ` Avi Kivity
2009-12-20 15:51 ` Michael S. Tsirkin
2009-12-20 15:59 ` Avi Kivity
2009-12-20 16:56 ` Michael S. Tsirkin
2009-12-20 17:17 ` Alexander Graf
2009-12-20 17:18 ` Michael S. Tsirkin
2009-12-20 17:23 ` Alexander Graf
2009-12-20 17:23 ` Gleb Natapov
2009-12-20 17:29 ` Alexander Graf
2009-12-20 17:37 ` Gleb Natapov
2009-12-20 17:59 ` Anthony Liguori
2009-12-20 18:06 ` Alexander Graf
2009-12-21 7:48 ` Gleb Natapov
2009-12-21 13:25 ` [Qemu-devel] " Paolo Bonzini
2009-12-20 18:12 ` [Qemu-devel] " Michael S. Tsirkin
2009-12-21 7:43 ` Gleb Natapov
2009-12-21 8:28 ` Dor Laor
2009-12-21 22:51 ` john cooper
2009-12-22 13:54 ` Dor Laor
2009-12-22 15:19 ` john cooper
2009-12-22 16:12 ` Anthony Liguori
2010-01-05 6:06 ` john cooper
2010-01-06 8:02 ` [Qemu-devel] " Paolo Bonzini
[not found] ` <4B31F1BA.10005@redhat.com>
2010-01-06 0:10 ` [Qemu-devel] " Anthony Liguori
2010-01-06 3:25 ` Avi Kivity
2010-01-06 13:25 ` Anthony Liguori
2010-01-06 13:35 ` Michael S. Tsirkin
2010-01-06 13:47 ` Avi Kivity
2010-01-06 13:49 ` Anthony Liguori
2010-01-06 13:54 ` Avi Kivity
2010-01-06 13:55 ` Alexander Graf
2010-01-06 13:58 ` Avi Kivity
2010-01-06 14:22 ` Michael S. Tsirkin
2010-01-06 14:32 ` Avi Kivity
2010-01-06 14:48 ` Dor Laor
2010-01-06 15:16 ` Anthony Liguori
2010-01-07 8:03 ` Dor Laor
2010-01-07 8:03 ` Dor Laor
2010-01-07 8:18 ` Avi Kivity
2010-01-07 8:18 ` Avi Kivity
2010-01-07 9:11 ` Dor Laor
2010-01-07 9:11 ` Dor Laor
2010-01-07 9:24 ` Avi Kivity
2010-01-07 9:24 ` Avi Kivity
2010-01-07 9:40 ` Dor Laor
2010-01-07 11:39 ` Anthony Liguori [this message]
2010-01-07 11:39 ` Anthony Liguori
2010-01-07 11:44 ` Dor Laor
2010-01-07 11:44 ` Dor Laor
2010-01-07 12:00 ` Avi Kivity
2010-01-07 12:00 ` Avi Kivity
2010-01-07 12:20 ` Dor Laor
2010-01-07 12:20 ` Dor Laor
2010-01-07 12:33 ` Anthony Liguori
2010-01-07 12:33 ` Anthony Liguori
2010-01-07 12:40 ` Avi Kivity
2010-01-07 12:40 ` Avi Kivity
2010-01-07 12:47 ` Daniel P. Berrange
2010-01-07 12:47 ` Daniel P. Berrange
2010-01-07 12:50 ` Avi Kivity
2010-01-07 12:50 ` Avi Kivity
2010-01-07 13:14 ` Anthony Liguori
2010-01-07 13:14 ` Anthony Liguori
2010-01-07 13:42 ` Dor Laor
2010-01-07 13:42 ` Dor Laor
2010-01-11 13:26 ` Markus Armbruster
2010-01-11 13:26 ` Markus Armbruster
2010-01-07 11:59 ` Avi Kivity
2010-01-07 12:17 ` Dor Laor
2010-01-07 8:24 ` Daniel P. Berrange
2010-01-07 8:24 ` Daniel P. Berrange
2010-01-07 9:13 ` Dor Laor
2010-01-07 9:13 ` Dor Laor
2010-01-06 15:02 ` Michael S. Tsirkin
2010-01-06 15:12 ` Anthony Liguori
2010-01-06 9:44 ` Daniel P. Berrange
2010-01-06 9:54 ` Avi Kivity
2010-01-06 10:21 ` Daniel P. Berrange
2010-01-06 10:25 ` Avi Kivity
2010-01-06 16:19 ` Lennart Sorensen
2009-12-21 11:15 ` Avi Kivity
2009-12-21 12:59 ` Andre Przywara
2009-12-21 16:14 ` Avi Kivity
2009-12-22 23:02 ` Jamie Lokier
2009-12-21 11:12 ` Avi Kivity
2009-12-21 11:18 ` Michael S. Tsirkin
2009-12-21 11:22 ` Alexander Graf
2009-12-21 11:38 ` Michael S. Tsirkin
2009-12-21 11:45 ` Alexander Graf
2009-12-21 12:02 ` Michael S. Tsirkin
2009-12-22 22:52 ` Jamie Lokier
2009-12-21 12:05 ` Avi Kivity
2009-12-21 13:45 ` David S. Ahern
2009-12-21 13:51 ` Michael S. Tsirkin
2009-12-21 14:07 ` David S. Ahern
2009-12-21 16:11 ` Avi Kivity
2009-12-21 12:04 ` Avi Kivity
2009-12-21 12:04 ` Michael S. Tsirkin
2009-12-21 12:09 ` Avi Kivity
2009-12-21 12:17 ` Michael S. Tsirkin
2009-12-21 11:38 ` Yaniv Kaul
2009-12-21 13:31 ` [Qemu-devel] " Paolo Bonzini
2009-12-22 22:56 ` Jamie Lokier
2009-12-16 14:23 ` [Qemu-devel] " Andre Przywara
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