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linux/arch/m68k/kernel
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Geert Uytterhoeven d4b97925e8 m68k: mm: Move initrd phys_to_virt handling after paging_init() 
When booting with an initial ramdisk on platforms where physical memory
does not start at address zero (e.g. on Amiga):

    initrd: 0ef0602c - 0f800000
    Zone ranges:
      DMA      [mem 0x0000000008000000-0x000000f7ffffffff]
      Normal   empty
    Movable zone start for each node
    Early memory node ranges
      node   0: [mem 0x0000000008000000-0x000000000f7fffff]
    Initmem setup node 0 [mem 0x0000000008000000-0x000000000f7fffff]
    Unable to handle kernel access at virtual address (ptrval)
    Oops: 00000000
    Modules linked in:
    PC: [<00201d3c>] memcmp+0x28/0x56

As phys_to_virt() relies on m68k_memoffset and module_fixup(), it must
not be called before paging_init().  Hence postpone the phys_to_virt
handling for the initial ramdisk until after calling paging_init().

While at it, reduce #ifdef clutter by using IS_ENABLED() instead.

Fixes: 376e3fdecb ("m68k: Enable memtest functionality")
Reported-by: Stephen Walsh <vk3heg@vk3heg.net>
Link: https://lists.debian.org/debian-68k/2022/09/msg00007.html
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/4f45f05f377bf3f5baf88dbd5c3c8aeac59d94f0.camel@physik.fu-berlin.de
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Finn Thain <fthain@linux-m68k.org>
Link: https://lore.kernel.org/r/dff216da09ab7a60217c3fc2147e671ae07d636f.1677528627.git.geert@linux-m68k.org
2023-03-06 14:09:42 +01:00
..
syscalls arch: syscalls: simplify uapi/kapi directory creation 2022-03-31 12:03:46 +09:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-offsets.c m68k: Remove set_fs() 2021-09-24 13:35:07 +02:00
bootinfo_proc.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
dma.c m68k: dma: Remove unnecessary include of asm/cacheflush.h 2021-05-10 11:47:00 +02:00
early_printk.c
entry.S m68k: Add kernel seccomp support 2023-01-30 16:40:15 +01:00
head.S m68k: Introduce a virtual m68k machine 2022-04-11 11:48:01 +02:00
ints.c
irq.c
machine_kexec.c
Makefile kbuild: use obj-y instead extra-y for objects placed at the head 2022-10-02 18:04:05 +09:00
module.c
pcibios.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
process.c [elf][non-regset] uninline elf_core_copy_task_fpregs() (and lose pt_regs argument) 2022-11-24 23:24:23 -05:00
ptrace.c m68k: Add kernel seccomp support 2023-01-30 16:40:15 +01:00
relocate_kernel.S
setup.c
setup_mm.c m68k: mm: Move initrd phys_to_virt handling after paging_init() 2023-03-06 14:09:42 +01:00
setup_no.c m68k: use strscpy() to instead of strncpy() 2022-12-05 09:07:21 +10:00
signal.c signal: Deliver SIGTRAP on perf event asynchronously if blocked 2022-04-22 12:14:05 +02:00
sun3-head.S
sys_m68k.c arch/m68k/kernel/sys_m68k: use vma_lookup() in sys_cacheflush() 2021-06-29 10:53:51 -07:00
syscalltable.S m68k: syscalls: switch to generic syscalltbl.sh 2021-04-06 09:33:20 +02:00
time.c m68knommu: fix undefined reference to `mach_get_rtc_pll' 2022-05-25 00:03:58 +10:00
traps.c m68k: Add common forward declaration for show_registers() 2022-07-12 10:48:21 +02:00
uboot.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
vectors.c
vmlinux-nommu.lds objtool/idle: Validate __cpuidle code as noinstr 2023-01-13 11:48:15 +01:00
vmlinux-std.lds objtool/idle: Validate __cpuidle code as noinstr 2023-01-13 11:48:15 +01:00
vmlinux-sun3.lds objtool/idle: Validate __cpuidle code as noinstr 2023-01-13 11:48:15 +01:00
vmlinux.lds.S