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Re: [Xen-devel] How to modify GUEST_RIP in xen 4.0.1?

from [Tim Deegan]

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To:	"K.C. Lee" <kcl.joseph@xxxxxxxxx>
Subject:	Re: [Xen-devel] How to modify GUEST_RIP in xen 4.0.1?
From:	Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Date:	Mon, 13 Dec 2010 17:03:25 +0000
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At 16:38 +0000 on 13 Dec (1292258301), K.C. Lee wrote:
> Hi,
> 
> I want to change the guest's RIP.
> 
> The story is that I change GUEST_SYSENTER_EIP in vmx_vmexit_handler() in 
> order to catch a page_fault and do something in sh_page_fault().
> But I need to change GUEST_RIP back after something is done.
> 
> I change GUEST_RIP in sh_page_fault(),
> but it doesn't work.
> 
> What should I do?

Look at the other paths in vmx_vmexit_handler that change the guest
RIP and copy one of them? 

Cheers,

Tim.

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Xen Platform Team
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

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