[PATCH 0/2] init, hugetlb: fix early parameter ordering

[Zhenghui Hao]

hugetlb records its command line parameters from early_param()
handlers and consumes them later from hugetlb_bootmem_alloc().

Commit d49004c5f0c1 ("arch, mm: consolidate initialization of nodes,
zones and memory map") moved that consumer into mm_core_init_early(),
which runs before the generic parse_early_param() call in
start_kernel().  Architectures that call parse_early_param() from
setup_arch() are not affected, but on parisc the parameters are then
recorded after they have already been consumed and are silently
dropped.

Patch 1/2 moves parse_early_param() before mm_core_init_early(),
together with jump_label_init() and static_call_init() so that the
"parameters may set static keys" guarantee still holds.

Patch 2/2 makes this class of ordering problem non-silent.  It cannot
fire once 1/2 is applied; if you would rather take only the fix,
please drop 2/2.

Not tested on parisc hardware.

Zhenghui Hao (2):
  init: parse early parameters before memory initialization
  hugetlb: report cmdline parameters recorded too late

 init/main.c  |  8 ++++----
 mm/hugetlb.c | 14 ++++++++++++++
 2 files changed, 18 insertions(+), 4 deletions(-)


base-commit: 9b87fdc9af2fbfcdb5c24a64139685ef80f6573f
-- 
2.53.0