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From: Liraz Siri <liraz@turnkeylinux.org>
To: qemu-devel@nongnu.org
Cc: turnkey-discuss@lists.turnkeylinux.org
Subject: Re: [Qemu-devel] Merging improvements from VirtualBox OSE into qemu?
Date: Thu, 25 Dec 2008 16:51:25 +0200	[thread overview]
Message-ID: <49539DED.7080507@turnkeylinux.org> (raw)
In-Reply-To: <49533176.4090908@redhat.com>

Avi Kivity wrote:

> There's nothing magical about it.  Most likely they switch to 64-bit
> mode immediately before entering the guest, and switch back immediately
> after the guest exits.  In effect their turning the host OS into a
> hybrid 32/64 bit kernel (with the vast majority of the code remaining
> 32-bits).

Sounds easy! Why, I bet one of those KVM wizards could do that over the
weekend, being so smart and all... ;)

Pardon my ignorance, but is it possible to switch to 64-bit mode in
userspace, or do you absolutely need kernel-level support to do that?

Cheers,
Liraz

  reply	other threads:[~2008-12-25 14:51 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-24 12:48 [Qemu-devel] Merging improvements from VirtualBox OSE into qemu? Liraz Siri
2008-12-24 13:17 ` Samuel Thibault
2008-12-24 13:26   ` Alexey Eremenko
2008-12-24 13:31 ` Alexey Eremenko
2008-12-24 13:36 ` Paul Brook
2008-12-24 14:33   ` Liraz Siri
2008-12-24 14:51     ` Jernej Simončič
2008-12-24 15:02     ` Paul Brook
2008-12-24 15:29       ` Liraz Siri
2008-12-24 15:40     ` Anthony Liguori
2008-12-24 20:52       ` Liraz Siri
2008-12-25  4:37     ` C.W. Betts
2008-12-25  4:37       ` C.W. Betts
2008-12-25  7:06     ` Avi Kivity
2008-12-25  7:07     ` Avi Kivity
2008-12-25  7:08     ` Avi Kivity
2008-12-25 14:51       ` Liraz Siri [this message]
2008-12-25 16:14         ` Avi Kivity
2008-12-24 23:18   ` Jamie Lokier
2008-12-25  7:11     ` Avi Kivity
2008-12-24 15:23 ` Anthony Liguori
2008-12-24 20:21   ` Liraz Siri
2008-12-24 20:55   ` Liraz Siri
2009-01-05 21:12   ` Frank Mehnert
2009-01-05 22:03     ` Stefan Weil
2009-01-05 23:58     ` Anthony Liguori
2009-01-06  7:41       ` Frank Mehnert
2009-01-06 15:46         ` Blue Swirl
2009-01-06 17:33         ` Anthony Liguori
2009-01-06 20:40           ` Frank Mehnert
2009-01-06 22:17             ` Jamie Lokier

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