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Date: Sat, 16 Dec 2017 12:19:53 +0800 From: Dave Young <dyoung@...hat.com> To: matt@...eblueprint.co.uk Cc: mingo@...nel.org, ard.biesheuvel@...aro.org, linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org Subject: [PATCH V2] x86/efi: fix kernel param add_efi_memmap regression 'add_efi_memmap' is an early param, but do_add_efi_memmap() has no chance to run because the code path is before parse_early_param(). I believe it worked when the param was introduced but probably later some other changes caused the wrong order and nobody noticed it. Move efi_memblock_x86_reserve_range() after parse_early_param() to fix it. Signed-off-by: Dave Young <dyoung@...hat.com> --- arch/x86/kernel/setup.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- linux-x86.orig/arch/x86/kernel/setup.c +++ linux-x86/arch/x86/kernel/setup.c @@ -906,9 +906,6 @@ void __init setup_arch(char **cmdline_p) set_bit(EFI_BOOT, &efi.flags); set_bit(EFI_64BIT, &efi.flags); } - - if (efi_enabled(EFI_BOOT)) - efi_memblock_x86_reserve_range(); #endif x86_init.oem.arch_setup(); @@ -962,6 +959,8 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); + if (efi_enabled(EFI_BOOT)) + efi_memblock_x86_reserve_range(); #ifdef CONFIG_MEMORY_HOTPLUG /* * Memory used by the kernel cannot be hot-removed because Linux
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