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xen-devel
[Xen-devel] RE: [PATCH] Fix the RHEL4 guest hang
To: |
"Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> |
Subject: |
[Xen-devel] RE: [PATCH] Fix the RHEL4 guest hang |
From: |
"Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx> |
Date: |
Fri, 5 May 2006 11:41:29 -0700 |
Cc: |
"Mallick, Asit K" <asit.k.mallick@xxxxxxxxx>, Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx> |
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Fri, 05 May 2006 11:42:01 -0700 |
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[PATCH] Fix the RHEL4 guest hang |
Keir,
You are right. There is a 32bit exception bitmap field for the
vmexit control. It covers the first 32 interrupts/exceptions such as
page faults gp faults, int3, into etc. int instruction interrupts start
after that. And the vmexit due to int instructions can not be avoided.
Thanks & Regards,
Nitin
------------------------------------------------------------------------
-----------
Open Source Technology Center, Intel Corp
>-----Original Message-----
>From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx]
>
>Is it not possible to specify that software interrupts do not cause a
>VMEXIT? That would seem to avoid the problem totally (as the original
>'int 0xff' wouldn't vmexit), but it looks like maybe it's not possible.
>
> -- Keir
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