The guides said riscv64 covered EL10 only, and the riscv64 page listed
Ubuntu as unsupported. Both support matrices now carry the architecture for
Ubuntu, and the riscv64 page describes the Ubuntu paths: the loader copycd
builds from the media, the installer needing none of the accommodations
EL10 requires, the ports archive the packages come from, and a management
node running on riscv64. The 26.04 media need the RVA23 profile, which is
recorded as a limitation.
Signed-off-by: Vinícius Ferrão <2031761+viniciusferrao@users.noreply.github.com>
Add the riscv64 page to the cluster management guide (UEFI + grub2 boot
path, discovery through mknb's grub2 network configurations, stateful and
stateless provisioning, the dependency picture for a management node on
riscv64, limitations), list riscv64 in the node object attributes and in
the support matrices, add the architecture to the cross-build page for
stateless images, extend the grub2 install guide (and fix its swapped
x86_64/aarch64 file names), the uninstall package lists, the DHCP backend
validation matrix and the mknb/genimage man pages, and carry the riscv64
schema values into the generated nodetype, osimage, noderes, node and
group references.