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On Sat, Oct 06, 2018 at 05:29:42PM +0100, Aaron Gray wrote:
> On Sat, 6 Oct 2018 at 17:15, Marek Marczykowski-Górecki <
> [email protected]> wrote:
> 
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> > On Sat, Oct 06, 2018 at 04:41:25PM +0100, Aaron Gray wrote:
> > > On Sat, 6 Oct 2018 at 16:02, Marek Marczykowski-Górecki <
> > > [email protected]> wrote:
> > >
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> > > > On Sat, Oct 06, 2018 at 03:41:01PM +0100, Aaron Gray wrote:
> > > > > On Sat, 6 Oct 2018 at 06:04, qubenix <[email protected]> wrote:
> > > > >
> > > > > > Marek Marczykowski-Górecki:
> > > > > > > On Fri, Oct 05, 2018 at 09:13:07PM -0700, Aaron Gray wrote:
> > > > > > >> I am trying to get Qubes to support any of my Z77 or Z270 Intel
> > > > > > >> chipset machines.
> > > > > > >
> > > > > > >> They need IOMMU support for ports 0x80 and above.
> > > > > > >
> > > > > > >> https://github.com/QubesOS/qubes-issues/issues/4309
> > > > > > >
> > > > > > >> xen-4.9.2 supports this.
> > > > > > >
> > > > > > > No, we don't do major Xen upgrades as part of point release.
> > > > > > >
> > > > > > > The patch look quite complex, but maybe it would be possible to
> > > > > > > backport it to Xen 4.8 anyway. I need to look at it again.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > FWIW, I built a Qubes iso including the patch mentioned in issue
> > #4309
> > > > > > for a friend that has a Threadripper 2950x and Taichi X399 board.
> > The
> > > > > > steps I used are documented here:
> > > > > >
> > https://groups.google.com/d/topic/qubes-users/gv6q1ZSGOm4/discussion.
> > > > > >
> > > > > > Maybe I did something wrong, but my iso built without error.
> > > > > > Installation worked without issue, but IOMMU and remapping were
> > still
> > > > > > not available.
> > > > > >
> > > > >
> > > > > @qubenix - I think patch is for the Xen package proper not
> > qubes-vmm-xen.
> > > >
> > > > Xen packages are build in qubes-vmm-xen.
> > > >
> > > > > Marek - I am trying to work out how to add in the later xen-4.9.2 RPM
> > > > from
> > > > > another repo and am nearing GNU Makefile insanity with your build
> > > > system. I
> > > > > don't really like Gnu Make.
> > > > >
> > > > > Can I just use :-
> > > > >
> > > > >     /tmp/qubes-packages-minor-repo
> > > > >
> > > > > And put the repo in there as would be suggested by :-
> > > > >
> > > > >
> > > > >
> > > >
> > https://github.com/QubesOS/qubes-builder-rpm/blob/master/repos/builder-local.repo
> > > >
> > > > That won't work for multiple reasons. First of all, Qubes do have some
> > > > extra patches over upstream Xen, without them you probably won't be
> > able
> > > > to boot any VM. But then, if you update Xen from 4.8.x to 4.9.x, you
> > > > need to rebuild other packages to link with new version.
> > > >
> > >
> > > Marek,
> > >
> > > Timewise how long am I looking at to wait for 4.1 alpha to be released
> > with
> > > the xen patche(s) or xen updated to 4.9 ?
> >
> > There is ongoing work to have Xen 4.11 for Qubes 4.0. But I wouldn't
> > expect installable alpha builds before December, or even January.
> >
> > > In parallel can I rely on you for some level of support if I try and do
> > the
> > > 4.9 update to 4.0 myself ?
> >
> > For 4.0, much easier (in terms of time) would be to backport that single
> > patch and see if that works. It's here, totally untested (not even build
> > tested):
> > https://github.com/marmarek/qubes-vmm-xen/tree/xen-4.8-amd-iommu
> >
> > You can try building this, by adding to your builder.conf:
> >
> >     GIT_URL_vmm_xen = https://github.com/marmarek/qubes-vmm-xen
> >     BRANCH_vmm_xen = xen-4.8-amd-iommu
> >
> > Then:
> >
> >     make get-sources
> >     make vmm-xen # or `make qubes` if you didn't build other components
> > before
> >     make iso
> >
> 
> Great thanks I will try that. Qubenix did say he had tried it but I will
> double check on my hardware which is Z270 chipset based.

BTW here you can find example how to add/modify patches for xen if it turns out
something more is needed:
https://github.com/marmarek/qubes-vmm-xen/commit/3f284833914c76bb59306b5f19f44d237d20d275

- -- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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