• Borislav Petkov's avatar
    x86/boot: Fix randconfig build error due to MEMORY_HOTREMOVE · 82df8261
    Borislav Petkov authored
    When building randconfigs, one of the failures is:
      ld: arch/x86/boot/compressed/kaslr.o: in function `choose_random_location':
      kaslr.c:(.text+0xbf7): undefined reference to `count_immovable_mem_regions'
      ld: kaslr.c:(.text+0xcbe): undefined reference to `immovable_mem'
      make[2]: *** [arch/x86/boot/compressed/vmlinux] Error 1
    because CONFIG_ACPI is not enabled in this particular .config but
    CONFIG_MEMORY_HOTREMOVE is and count_immovable_mem_regions() is
    unresolvable because it is defined in compressed/acpi.c which is the
    compilation unit that depends on CONFIG_ACPI.
    Add CONFIG_ACPI to the explicit dependencies for MEMORY_HOTREMOVE.
    Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
    Cc: Chao Fan <fanc.fnst@cn.fujitsu.com>
    Cc: x86@kernel.org
    Link: https://lkml.kernel.org/r/20190205131033.9564-1-bp@alien8.de