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Christophe Leroy e97c59c35e powerpc/mm: Fix boot warning with hugepages and CONFIG_DEBUG_VIRTUAL 
[ Upstream commit e7e846dc6c73fbc94ae8b4ec20d05627646416f2 ]

Booting with CONFIG_DEBUG_VIRTUAL leads to following warning when
passing hugepage reservation on command line:

  Kernel command line: hugepagesz=1g hugepages=1 hugepagesz=64m hugepages=1 hugepagesz=256m hugepages=1 noreboot
  HugeTLB: allocating 1 of page size 1.00 GiB failed.  Only allocated 0 hugepages.
  ------------[ cut here ]------------
  WARNING: CPU: 0 PID: 0 at arch/powerpc/include/asm/io.h:948 __alloc_bootmem_huge_page+0xd4/0x284
  Modules linked in:
  CPU: 0 PID: 0 Comm: swapper Not tainted 6.10.0-rc6-00396-g6b0e82791bd0-dirty #936
  Hardware name: MPC8544DS e500v2 0x80210030 MPC8544 DS
  NIP:  c1020240 LR: c10201d0 CTR: 00000000
  REGS: c13fdd30 TRAP: 0700   Not tainted  (6.10.0-rc6-00396-g6b0e82791bd0-dirty)
  MSR:  00021000 <CE,ME>  CR: 44084288  XER: 20000000

  GPR00: c10201d0 c13fde20 c130b560 e8000000 e8001000 00000000 00000000 c1420000
  GPR08: 00000000 00028001 00000000 00000004 44084282 01066ac0 c0eb7c9c efffe149
  GPR16: c0fc4228 0000005f ffffffff c0eb7d0c c0eb7cc0 c0eb7ce0 ffffffff 00000000
  GPR24: c1441cec efffe153 e8001000 c14240c0 00000000 c1441d64 00000000 e8000000
  NIP [c1020240] __alloc_bootmem_huge_page+0xd4/0x284
  LR [c10201d0] __alloc_bootmem_huge_page+0x64/0x284
  Call Trace:
  [c13fde20] [c10201d0] __alloc_bootmem_huge_page+0x64/0x284 (unreliable)
  [c13fde50] [c10207b8] hugetlb_hstate_alloc_pages+0x8c/0x3e8
  [c13fdeb0] [c1021384] hugepages_setup+0x240/0x2cc
  [c13fdef0] [c1000574] unknown_bootoption+0xfc/0x280
  [c13fdf30] [c0078904] parse_args+0x200/0x4c4
  [c13fdfa0] [c1000d9c] start_kernel+0x238/0x7d0
  [c13fdff0] [c0000434] set_ivor+0x12c/0x168
  Code: 554aa33e 7c042840 3ce0c142 80a7427c 5109a016 50caa016 7c9a2378 7fdcf378 4180000c 7c052040 41810160 7c095040 <0fe00000> 38c00000 40800108 3c60c0eb
  ---[ end trace 0000000000000000 ]---

This is due to virt_addr_valid() using high_memory before it is set.

high_memory is set in mem_init() using max_low_pfn, but max_low_pfn
is available long before, it is set in mem_topology_setup(). So just
like commit daa9ada2093e ("powerpc/mm: Fix boot crash with FLATMEM")
moved the setting of max_mapnr immediately after the call to
mem_topology_setup(), the same can be done for high_memory.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/62b69c4baad067093f39e7e60df0fe27a86b8d2a.1723100702.git.christophe.leroy@csgroup.eu
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-23 23:21:10 +01:00
..
alpha Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
arc ARC: [plat-hsdk]: Remove misplaced interrupt-cells property 2024-11-19 11:32:36 +01:00
arm ARM: dts: imx6qdl-kontron-samx6i: fix phy-mode 2024-11-23 23:20:32 +01:00
arm64 arm64: acpi: Harden get_cpu_for_acpi_id() against missing CPU entry 2024-11-23 23:21:08 +01:00
c6x Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
csky csky, hexagon: fix broken sys_sync_file_range 2024-11-19 14:19:34 +01:00
h8300 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hexagon hexagon: fix fadvise64_64 calling conventions 2024-11-19 14:19:34 +01:00
ia64 efi: ia64: move IA64-only declarations to new asm/efi.h header 2024-11-19 14:19:45 +01:00
m68k m68k: amiga: Turn off Warp1260 interrupts during boot 2024-11-23 23:20:13 +01:00
microblaze microblaze: Remove early printk call from cpuinfo-static.c 2024-11-19 12:27:04 +01:00
mips MIPS: cevt-r4k: Don't call get_c0_compare_int if timer irq is installed 2024-11-23 23:21:06 +01:00
nds32 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nios2 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
openrisc openrisc: Call setup_memory() earlier in the init sequence 2024-11-23 23:20:47 +01:00
parisc parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367 2024-11-23 23:20:46 +01:00
powerpc powerpc/mm: Fix boot warning with hugepages and CONFIG_DEBUG_VIRTUAL 2024-11-23 23:21:10 +01:00
riscv riscv/mm: Add handling for VM_FAULT_SIGSEGV in mm_fault_error() 2024-11-23 23:20:20 +01:00
s390 s390/vmlinux.lds.S: Move ro_after_init section behind rodata section 2024-11-23 23:21:06 +01:00
sh Revert "sh: Handle calling csum_partial with misaligned data" 2024-11-19 12:26:56 +01:00
sparc sparc64: Fix incorrect function signature and add prototype for prom_cif_init 2024-11-23 23:20:10 +01:00
um um: line: always fill *error_out in setup_one_line() 2024-11-23 23:21:05 +01:00
x86 x86: Increase brk randomness entropy for 64-bit systems 2024-11-23 23:20:46 +01:00
xtensa Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig cpu: Re-enable CPU mitigations by default for !X86 architectures 2024-11-19 11:32:38 +01:00