Arch Linux User Repository

@ntegan: that's good to hear. I'll probably want to look at changing the GRUB scripts then to look for xen.gz instead of a versioned file.

My justification is that I use either syslinux or direct EFI boot, and having to change my settings on every revision is suboptimal. Also, since other kernels aren't versioned in the repos, it seemed a bit more Arch-like to me.

In the meantime, since I first posted I've made a couple of bugfixes. I moved ipxe out of _stubdom_sources as it's not for stubdom, set rundir, and then added a hook to extract firmware from intel-ucode so xen EFI can use it. I'm working on an AMD hook.

Thanks for the updated PKGBUILD, @Refutationalist.

Only thing I had to change for GRUB to generate the menu entry was to move my /boot/xen.gz to /boot/xen-4.13.1.gz, to match what the grub menu entry generator was looking for.

I found that the gcc upgrade to 10 broke my compile, too. The only reason I needed to compile is that nettle upgraded and requires xen to be recompiled, but I could only get xen 4.13.0 to compile, not 4.13.1. I downgraded gcc back to the last version of 9 and was able to recompile for the newer version of nettle.

I'm still on kernel 5.5.13-arch2 as it was the latest I could get HVM networking to work (I run OPNSense as a HVM).

My server motherboard doesn't have UEFI, so I'm only doing BIOS boot with Grub2.

Thanks for the repo. I will certainly check it out!

Oh, also, I haven't tested the grub bits at all since, as I don't use it.

Most recent upgrade of one of my dom0s broke this package for me. Also, recompiling from this package or any other PKGBUILD failed under GCC 10.1. I decided to look into it as I needed this machine up and running.

While I was looking for solutions, I noticed that there was a tarball for 4.13.1 available. I found some patches for GCC 10 via Fedora, but there were other simple changes needed for 10.1. It was trial and error, "make it go" hacking rather than anything robust, but it does compile and run.

It's a kitbash of a couple PKGBUILDs with some changes to simplify things. It's available here: https://github.com/refutationalist/saur/tree/master/xen

I've tested it on exactly one system: the one I needed to run. It's successfully booted Arch in PV and OpenBSD in HVM. Haven't tested PVH yet, but that's next. At this point, I thought more eyes were better.

Elsewhere in the repo is a version of qemu from the repos that has been modified to include xen, if that's needed.

I've been testing different kernels with dom0 under Xen. I found that kernel 5.6.0 does not work, but 5.5.13-arch2-1 does. I will be looking through the other kernel versions and comparing the kernel compile configs to determine if something changed.

Kernel 5.5.13-arch2-a as a dom0 under Xen 4.13.0 is working, so far.

No problem getting Xen 4.13.0 compiled and running. Had to change one configure option...

Any updates on getting the version moved up? This package is now a couple of versions behind upstream... current Xen version is 4.13.0

I was able to get 4.12.2 to build without issue.

Upgraded to the latest kernel, 5.6.10, and it broke networking for Xen HVM (opnsense). Downgraded the kernel back to 5.5.8 and things work, again. Not sure which kernel version is the last one that works since I haven't upgraded each release.

Just failed to build like that:

makepkg -cCsfir
==> Making package: xen 4.12.1-1 (Sun 12 Apr 2020 10:23:19 PM CEST)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

...

==> Retrieving sources...
  -> Found xen-4.12.1.tar.gz
  -> Found xen-4.12.1.tar.gz.sig
  -> Found ipxe-git.tar.gz
  -> Found grub-mkconfig-helper
  -> Found efi-xen.cfg
  -> Found grub.conf
  -> Found xen.conf
  -> Found tmpfiles.conf
==> Validating source files with sha256sums...
    xen-4.12.1.tar.gz ... Passed
    xen-4.12.1.tar.gz.sig ... Skipped
    ipxe-git.tar.gz ... Passed
    grub-mkconfig-helper ... Passed
    efi-xen.cfg ... Passed
    grub.conf ... Passed
    xen.conf ... Passed
    tmpfiles.conf ... Passed
==> Verifying source file signatures with gpg...
    xen-4.12.1.tar.gz ... Passed
==> Removing existing $srcdir/ directory...
==> Extracting sources...
  -> Extracting xen-4.12.1.tar.gz with bsdtar
==> Starting prepare()...
  -> Copying downloaded files...
  -> Applying XSA patches...
  -> Applying tools patches (qemu-xen-traditional)...
  -> Applying tools patches (qemu-xen)...
  -> Applying misc compile fixes...
  -> Fixing installation paths...
==> Sources are ready.
==> Removing installed dependencies...
checking dependencies...
:: brltty optionally requires ocaml: OCaml support
:: graphviz optionally requires ocaml: ocaml bindings

...

 CC       xentoollog_stubs.o
xentoollog_stubs.c: In function 'stub_xtl_ocaml_vmessage':
xentoollog_stubs.c:93:16: error: initialization discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
   93 |  value *func = caml_named_value(xtl->vmessage_cb) ;
      |                ^~~~~~~~~~~~~~~~
xentoollog_stubs.c: In function 'stub_xtl_ocaml_progress':
xentoollog_stubs.c:123:16: error: initialization discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
  123 |  value *func = caml_named_value(xtl->progress_cb) ;
      |                ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
...
==> ERROR: A failure occurred in build().
    Aborting...
...