Commit-ID:  835bcec5fdf3f9e880111b482177e7e70e3596da
Gitweb:     https://git.kernel.org/tip/835bcec5fdf3f9e880111b482177e7e70e3596da
Author:     Dave Young <[email protected]>
AuthorDate: Tue, 2 Jan 2018 17:21:09 +0000
Committer:  Ingo Molnar <[email protected]>
CommitDate: Wed, 3 Jan 2018 13:54:31 +0100

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 <[email protected]>
Signed-off-by: Matt Fleming <[email protected]>
Signed-off-by: Ard Biesheuvel <[email protected]>
Cc: Bryan O'Donoghue <[email protected]>
Cc: Ge Song <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
---
 arch/x86/kernel/setup.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 8af2e8d..145810b 100644
--- a/arch/x86/kernel/setup.c
+++ b/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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