| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] pagetable pinning question
> > I can't comment on the 1.3 problem but for 1.2 it would seem to me that
> > simply increasing the L2's reference count when we map a different L2 table
> > as a twisted L2 table would keep things sane even in the circular case, as
> > long as we unmap in the opposite order. Or am I missing something?
> >
> > I think I can guarantee that the unmap order is correct if I clear the
> > alternate mapping whenever I switch pagetables (and there's no switches
> > between a requested mapping and the corresponding unmap). The pool cache
> > destructor would then also only need to check the current pagetable's
> > alternate mapping.
>
> Okay, I've checked in a fix for 1.2 that bumps the reference ocutn
> when mapping other PDs, and has an appropriate destructor/cleanup
> function.
>
> I'm still thinking about the tidiest way to change 1.3 to get the same
> behaviour.
I think I have the right solution now. I've checked it into the
unstable tree.
-- Keir
-------------------------------------------------------
The SF.Net email is sponsored by EclipseCon 2004
Premiere Conference on Open Tools Development and Integration
See the breadth of Eclipse activity. February 3-5 in Anaheim, CA.
http://www.eclipsecon.org/osdn
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel
|
|
|
| |
|
Home