Re: Adding default config options to the tuxrun baseline kernels and enabling sshd

[Stefano Stabellini]

On Fri, 24 Mar 2023, David Woodhouse wrote:
> On Fri, 2023-03-24 at 13:53 +0100, Remi Duraffort wrote:
> > Le ven. 24 mars 2023 à 12:02, Alex Bennée <alex.bennee@linaro.org> a écrit :
> > >   version: 1
> > >   name: Xen Guest Kernels
> > >   description: Build Xen Test Kernels
> > >   jobs:
> > >   - builds:
> > >       - {target_arch: x86_64, toolchain: gcc-12, kconfig: [defconfig, 
> > > "CONFIG_XEN=y", "CONFIG_XEN_PVHVM=y", "CONFIG_XEN_BLKDEV_FRONTEND=y", 
> > > "CONFIG_XEN_PVHVM_GUEST=y"]}
> > >       - {target_arch: i386, toolchain: gcc-12, kconfig: [defconfig, 
> > > "CONFIG_XEN=y", "CONFIG_XEN_PVHVM=y", "CONFIG_XEN_BLKDEV_FRONTEND=y", 
> > > "CONFIG_XEN_PVHVM_GUEST=y"]}
> > >     test: {device: qemu-x86_64, tests: [ltp-smoke]}
> > 
> > 
> > The kernels and rootfs are built by this gitlab
> > project: https://gitlab.com/LinaroLtd/tuxsuite.com/tuxtest/tuxtest-bu
> > ildroot using buildroot.
> > So for sure we can add sshd support quickly. Regarding the support
> > for xen, this can be added for arm64 if you want (only arm64 or
> > something else)?
> 
> Thanks. This request was for x86_64 and i386 kernels, rather than
> arm64.
> 
> I think arm64 Xen support is coming to qemu but it requires real Xen —
> while what we're wanting to test here is *emulating* Xen on Linux/KVM,
> which isn't something that we support on arm64. So I suspect there's
> not a lot of benefit in adding it to the arm64 builds? Vikram, Stefano,
> what do you think?

Yes, not useful for what we are trying to do.

>From my point of view, it would be useful to run a test inside QEMU
(emulating a full aarch64 platform) running Xen, Linux and QEMU (QEMU
running on Linux, all inside QEMU) to test the new xenpvh machine in the
inner QEMU. Not asking, just FYI.