[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] About qemu emulation speed (a question) and supported O
From: |
John R. Hogerhuis |
Subject: |
Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS |
Date: |
Wed, 14 Sep 2005 10:18:24 -0700 |
On Wed, 2005-09-14 at 09:37 -0400, Jim C. Brown wrote:
> VMware handles kernel code. You are right that x86 code can't be 100%
> virtualized
> (even at the userland level) but VMware uses a lot of nasty disgusting tricks
> in order to work around them. (For example, playing with shadow pagetables
> so that a page of modified code is run but if the code tries to inspect itself
> it sees another (unexecuted) page that contains the original code.)
>
Why disgusting?
Seems like a smart implementation given the options at hand.
Perhaps you meant disgusting because the Intel architecture forces a
virtualizer to handle a bunch of corner cases like this.
-- John.
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, (continued)
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Anthony Liguori, 2005/09/13
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Mark Williamson, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Anthony Liguori, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Mike Swanson, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Jim C. Brown, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Anthony Liguori, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Jim C. Brown, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Jim C. Brown, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Henrik Nordstrom, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Mark Williamson, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS,
John R. Hogerhuis <=
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Jim C. Brown, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Mark Williamson, 2005/09/14
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Karl Magdsick, 2005/09/15
- Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS, Mark Williamson, 2005/09/15