VMCOREINFO_BYTES is defined as a configurable size, but multiple
code paths implicitly assume it always fits into a single page.

This series removes that assumption by allocating and mapping
vmcoreinfo based on its actual size.

Patch 1 updates vmcoreinfo allocation to use get_order(VMCOREINFO_BYTES).
Patch 2 updates crash kernel handling to correctly allocate and map
multiple pages when copying vmcoreinfo.

This makes vmcoreinfo size consistent across the kernel and avoids
future breakage if VMCOREINFO_BYTES grows.

Tested on riscv64.

(No functional change when VMCOREINFO_BYTES == PAGE_SIZE.)

Pnina Feder (2):
  kernel: vmcoreinfo: allocate vmcoreinfo_data based on VMCOREINFO_BYTES
  kernel/crash: handle multi-page vmcoreinfo in crash kernel copy

 kernel/crash_core.c  | 17 +++++++++++++----
 kernel/vmcore_info.c |  6 ++++--
 2 files changed, 17 insertions(+), 6 deletions(-)

-- 
2.43.0