On Mon, 25 Oct 2021, Juergen Gross wrote: > On 22.10.21 21:41, Stefano Stabellini wrote: > > +Juergen > > > > On Fri, 22 Oct 2021, Andrew Cooper wrote: > > > On 22/10/2021 00:08, Stefano Stabellini wrote: > > > > +# build depends > > > > +RUN apt-get update && \ > > > > + apt-get --quiet --yes install \ > > > > + build-essential \ > > > > + libssl-dev \ > > > > + bc \ > > > > + curl \ > > > > + flex \ > > > > + bison \ > > > > + libelf-dev \ > > > > + && \ > > > > + \ > > > > + # Build the kernel > > > > + curl -fsSLO > > > > https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-"$LINUX_VERSION".tar.xz > > > > && \ > > > > + tar xvJf linux-"$LINUX_VERSION".tar.xz && \ > > > > + cd linux-"$LINUX_VERSION" && \ > > > > + make defconfig && \ > > > > + make xen.config && \ > > > > + cp .config .config.orig && \ > > > > + cat .config.orig | grep XEN | grep =m |sed 's/=m/=y/g' >> .config > > > > && \ > > > > + make -j$(nproc) bzImage && \ > > > > > > defconfig is huuuuge. Can we use tinyconfig instead? > > > > > > Also, you want to turn off CONFIG_MODULES seeing as you only copy > > > bzImage to the test. > > > > > > This also fixes the fact that `grep XEN` also matches CONFIG_NETXEN_NIC > > > which has nothing to do with Xen. > > > > Tinyconfig would be a good idea but it crashes on QEMU with the appended > > boot log. I did: > > > > # make tinyconfig > > # make xen.config > > # make bzImage > > > > Of course we could have our own tailored special kernel config for this > > kernel but I like the simplicify of "make tinyconfig" or "make > > defconfig" followed by "make xen.config". > > > > Unless you know one kconfig option or two that we need to add to > > tinyconfig to make it work my preference is to go with defconfig for > > now. > > You will need to add the dom0 and SMP related config options at least. > > I'll have a look at config.xen, which is a little bit weird: it > configures the backends, but not dom0.
Thanks, it would be good if make tinyconfig && make xen.config would just work on QEMU. In the meantime I'll keep defconfig for this test, we can always improve later.
