> -----Original Message----- > From: Xen-devel <xen-devel-boun...@lists.xenproject.org> On Behalf Of Jan > Beulich > Sent: 06 March 2020 13:10 > To: David Woodhouse <dw...@infradead.org>; Durrant, Paul > <pdurr...@amazon.co.uk> > Cc: sstabell...@kernel.org; jul...@xen.org; w...@xen.org; > konrad.w...@oracle.com; > andrew.coop...@citrix.com; ian.jack...@eu.citrix.com; > george.dun...@citrix.com; xen- > de...@lists.xenproject.org; volodymyr_babc...@epam.com > Subject: Re: [Xen-devel] [PATCH 2/2] domain: use PGC_extra domheap page for > shared_info > > On 06.03.2020 13:57, David Woodhouse wrote: > > On Fri, 2020-03-06 at 13:36 +0100, Jan Beulich wrote: > >> And of course this means you're intending to (at least > >> partially) resurrect the distinction between domheap and xenheap, > >> which isn't said anywhere in Paul's series, I don't think. > > > > Right. Secret hiding makes the distinction (xenheap is mapped, domheap > > is not) mostly go away. We are talking about restoring *a* distinction > > between one type of page (Xen ephemeral pages which don't need to be > > preserved over live update) and another (must be preserved), but > > whether that should still be called "xenheap" vs. "domheap", despite > > the massive parallels, isn't entirely clear. > > > >> If this > >> is a sufficiently correct understanding of mine, then on one hand > >> I start seeing the point of the conversion Paul wants to make, but > >> otoh this then feels a little like making the 2nd step before the > >> 1st. > > > > > > What would you suggest is the first step? > > Establishing of what the new separation rule and mechanism is going > to be (no matter how the two resulting pieces are going to be > named). >
Would you be ok with a comment to that effect? My aim is to make the separation abundantly obvious by getting rid of shared xenheap pages (for non-system domains at least) but I can't do that before converting shared_info and grant shared/status frames to domheap. Paul > Jan > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xenproject.org > https://lists.xenproject.org/mailman/listinfo/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
