From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@qumranet.com>
Subject: Re: kvm_pio_request
Date: Sat, 05 Jul 2008 12:05:21 +0300
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References: <a85e78f50807040311le0bff36vd33118dde470ce19@mail.gmail.com>
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To: Sukanto Ghosh <sukanto.cse.iitb@gmail.com>
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Sukanto Ghosh wrote:
> What do the following fields of struct kvm_pio_request mean ?
>
> i) cur_count
> ii) string
> iii) down
> iv) rep
>   

See the documentation for the 'rep ins' and 'rep outs' instruction in 
the processor manuals.

> v) why does guest_pages field point to an array of two pages ?
>   

In case an ins instruction points at an unaligned page-crossing address.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.