On Fri, Aug 04, 2017 at 10:20:24AM +0800, Zhongze Liu wrote: > Two checks in the p2m code forbids sharing physical pages among DomU's by > using > xc_add_to_physmap_batch with XENMAPSPACE_gmfn_foreign. Just simply remove them > in this RFC patch to ask for suggestions on how to properly handle this. > > This is for the proposal "Allow setting up shared memory areas between VMs > from xl config file" (see [1]). > > [1] https://lists.xenproject.org/archives/html/xen-devel/2017-07/msg03047.html > > Signed-off-by: Zhongze Liu <blacksk...@gmail.com> > --- > Cc: George Dunlap <george.dun...@eu.citrix.com> > Cc: Jan Beulich <jbeul...@suse.com> > Cc: Andrew Cooper <andrew.coop...@citrix.com> > Cc: Stefano Stabellini <sstabell...@kernel.org> > Cc: Julien Grall <julien.gr...@arm.com> > Cc: xen-devel@lists.xen.org > --- > xen/arch/x86/mm/p2m.c | 20 +++++++++++++++----- > 1 file changed, 15 insertions(+), 5 deletions(-) > > diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c > index e8a57d118c..3ee4c14ed4 100644 > --- a/xen/arch/x86/mm/p2m.c > +++ b/xen/arch/x86/mm/p2m.c > @@ -2531,8 +2531,13 @@ int p2m_add_foreign(struct domain *tdom, unsigned long > fgfn, > * hvm fixme: until support is added to p2m teardown code to cleanup any > * foreign entries, limit this to hardware domain only.
This HVM fixme needs to be fixed before the check can go away. This is going to be a non-trivial project, but it is going to be useful in its own right. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
