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RISC-V: avoid soft lockup Radeon GPUs with GRUB

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With Radeon GPUs and kernel 5.19 a soft lockup was observed.
Increase the watchdog threshold.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt 2023-02-10 10:53:00 +00:00
parent ee843c14de
commit 0924d50aee
2 changed files with 5 additions and 0 deletions
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2
live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi.binary
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@ -247,6 +247,7 @@ install_grub() {
case "${SUBARCH}" in
"icicle")
echo "Installing GRUB for ${SUBARCH} board"
cp ${my_d}/riscv64/grub/90_watchdog-thresh.cfg mountpoint/etc/default/grub.d/
# flash-kernel is needed to install the dtb for update-grub: it uses the
# /proc/device-tree/model value to pick the correct dtb and as we are in a chroot,
# the model value is wrong and we need to use /etc/flash-kernel/machine instead.
@ -367,6 +368,7 @@ EOF
setup_cinocloud mountpoint
;;
*)
cp ${my_d}/riscv64/grub/90_watchdog-thresh.cfg mountpoint/etc/default/grub.d/
chroot mountpoint apt-get install -qqy u-boot-menu #grub-efi-riscv64
efi_target=riscv64-efi
chroot mountpoint u-boot-update

3
live-build/ubuntu-cpc/hooks.d/base/riscv64/grub/90_watchdog-thresh.cfg Normal file
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@ -0,0 +1,3 @@
# When booting with Radeon GPUs a soft lockup was observed. Increase the
# watchdog threshhold.
GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT sysctl.kernel.watchdog_thresh=60"