ppc64 or powernv Linux defconfig fail to build with gcc 11 and/or
binutils 2.37 [1] :
CC kernel/kexec_file.o
Cannot find symbol for section 10: .text.unlikely.
kernel/kexec_file.o: failed
Patches have been sent upstream and should reach Linux 5.18. Until
then, limit binutils to 2.36.1 which doesn't raise the issue.
[1] https://github.com/linuxppc/issues/issues/388
Cc: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
PowerNV is the platform using the OPAL [1] firmware on OpenPOWER
systems. OPAL first loads a kernel and an initramfs image based on
buildroot including a second boot loader petitboot [2]. The latter
does device discovery and kexecs a new Linux image from disk or
network.
QEMU implements PowerNV machines [3] for the POWER8, POWER9 and
Power10 processors which are used for dev and tests. POWER8 images
being compatible with POWER9 and Power10, simply add a single
qemu_ppc64le_powernv8 board for all.
The QEMU script boots directly from a nvme disk because it is simple
enough but a real system would boot from a ramfs first.
[1] https://github.com/open-power/skiboot/blob/master/doc/overview.rst
[2] https://github.com/open-power/petitboot/
[3] https://qemu.readthedocs.io/en/latest/system/ppc/powernv.html
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
