I noticed CMA init for fadump crashkernel memory is failing.
[ 0.000000] cma: pageblock_order not yet initialized. Called during
early boot?
[ 0.000000] fadump: Failed to init cma area for firmware-assisted
dump,-22
kernel command-line:
BOOT_IMAGE=(ieee1275//vdevice/v-scsi@30000070/disk@8100000000000000,msdos2)/vmlinuz-7.0.0-rc1+
root=/dev/mapper/rhel_ltcden3--lp12-root ro
rd.lvm.lv=rhel_ltcden3-lp12/root rd.lvm.lv=rhel_ltcden3-lp12/swap
fadump=on crashkernel=3G
Same issue with kdump CMA reservation:
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 200 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 100 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 50 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 25 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 12 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 6 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 3 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 1 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 0 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 0 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 0 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 0 MiB
[ 0.000000][ T0] cma: pageblock_order not yet initialized. Called
during early boot?
[ 0.000000][ T0] cma: Failed to reserve 0 MiB
[ 0.000000][ T0] crashkernel CMA reservation failed: 200 MB
requested, 0 MB reserved in 0 ranges
kernel command-line:
# cat /proc/cmdline
noreboot crashkernel=200M crashkernel=200M,cma
Should be easy to reproduce it with powerpc defconfig:
make ARCH=powerpc defconfig
The crashkernel CMA init for fadump and kdump happens in:
arch/powerpc/kernel/setup-common.c -> setup_arch()
initmem_init();
/*
* Reserve large chunks of memory for use by CMA for kdump, fadump,
KVM and
* hugetlb. These must be called after initmem_init(), so that
* pageblock_order is initialised.
*/
fadump_cma_init();
kdump_cma_reserve();
kvm_cma_reserve();
Has something changed for pageblock_order initialization?
- Sourabh Jain
