Re: [Xen-devel] [PATCH] Make get_page_from_l1e refcount correctlyonforeign pagetables.

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> Tim Deegan <Tim.Deegan@xxxxxxxxxx> 14.05.09 10:22 >>>
>At 08:42 +0100 on 14 May (1242290576), Jan Beulich wrote:
>> Perhaps the whole thing gets more convoluted because of c/s 19383, which
>> added a vcpu parameter for no apparent reason (current is used for that
>> everywhere afaict).
>
>That parameter is used so that dom0 can modify a PV domU's pagetables
>using the MMU ops (so dom0 tools can offline a suspect page without
>domU's help).

Hmm, now that you say that I do recall. Nevertheless, I can't spot any case
where mod_lX_table() would be called with other than current as the vcpu
argument. Is that perhaps only a future plan (and then c/s 19383 was maybe
committed prematurely)? Or what am I overlooking?

Thanks, Jan




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