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xen-devel
RE: [Xen-devel] VMX Assist and x86 segment registers
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To: |
"Khoa Huynh" <khoa@xxxxxxxxxx>, <aliguori@xxxxxxxxxx>, "Leendert Van Doorn" <leendert@xxxxxxxxxx> |
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Subject: |
RE: [Xen-devel] VMX Assist and x86 segment registers |
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From: |
"Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx> |
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Date: |
Thu, 1 Jun 2006 19:02:55 -0700 |
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Cc: |
"Yu, Wilfred" <wilfred.yu@xxxxxxxxx>, "Mallick, Asit K" <asit.k.mallick@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx> |
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Thu, 01 Jun 2006 19:03:28 -0700 |
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Thread-topic: |
[Xen-devel] VMX Assist and x86 segment registers |
Khoa,
Before vmxassist we were using Gunnison emulator inside Intel to do
the real mode emulation. We still have that code around.
I would like to know what is your time line for completing the qemu-dm
task?
Thanks & Regards,
Nitin
------------------------------------------------------------------------
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Open Source Technology Center, Intel Corp
>-----Original Message-----
>From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
>bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Khoa Huynh
>Sent: Wednesday, May 31, 2006 9:20 AM
>To: aliguori@xxxxxxxxxx
>Cc: Randy Thelen; xen-devel@xxxxxxxxxxxxxxxxxxx; xen-devel-
>bounces@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-devel] VMX Assist and x86 segment registers
>
>
>
>aliguori@xxxxxxxxxxxxxxxxxxxxxxx wrote on 05/31/2006 10:07:08 AM:
>
>> Big real mode is definitely a problem in vm86 mode. FreeBSD is also
>> notorious for its use of segmentation :-) I think it has been
proposed
>> that a potential solution is to do away with vmxassist entirely and
>> instead use qemu to emulate 16 bit mode (or another emulator if
>> available). Not sure if anyone is actually working on that yet
though.
>> It seems to be the most promising solution.
>
>Yes, we are thinking of putting a full instruction emulator into
>qemu-dm and emulating 16-bit stuff in qemu-dm instead of using
>vmxassist (vmxassist will go away). Leendert van Doorn and I are
>working on this. Thanks.
>
>Regards,
>Khoa
>
>
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>Xen-devel mailing list
>Xen-devel@xxxxxxxxxxxxxxxxxxx
>http://lists.xensource.com/xen-devel
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