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[Xen-devel] [RFC][PATCH] Emulate instructions in vm86 mode

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Subject: [Xen-devel] [RFC][PATCH] Emulate instructions in vm86 mode
From: Bastian Blank <bastian@xxxxxxxxxxxx>
Date: Thu, 7 Sep 2006 11:51:04 +0200
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Hi folks

This patch fixes the emulation of instructions in vm86 mode. It fetches
them using cs and eip instead of only eip. This makes it at least
possible to use the i945GM vesa bios from the running system.

I'm not sure if this is the correct fix or if we should call the gpf
handler of the running system. At least the support in linux reports
traps back to the userspace caller which is not possible if emulated in

Signed-off-by: Bastian Blank <waldi@xxxxxxxxxx>


Not one hundred percent efficient, of course ... but nothing ever is.
                -- Kirk, "Metamorphosis", stardate 3219.8

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