Re: [PATCH for-4.9-stable] efi/libstub: Unify command line param parsing

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On Thu, Jun 06, 2019 at 12:25:13PM +0200, Ard Biesheuvel wrote:
Commit 60f38de7a8d4e816100ceafd1b382df52527bd50 upstream.

Merge the parsing of the command line carried out in arm-stub.c with
the handling in efi_parse_options(). Note that this also fixes the
missing handling of CONFIG_CMDLINE_FORCE=y, in which case the builtin
command line should supersede the one passed by the firmware.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: bhe@xxxxxxxxxx
Cc: bhsharma@xxxxxxxxxx
Cc: bp@xxxxxxxxx
Cc: eugene@xxxxxx
Cc: evgeny.kalugin@xxxxxxxxx
Cc: jhugo@xxxxxxxxxxxxxx
Cc: leif.lindholm@xxxxxxxxxx
Cc: linux-efi@xxxxxxxxxxxxxxx
Cc: mark.rutland@xxxxxxx
Cc: roy.franz@xxxxxxxxxx
Cc: rruigrok@xxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/20170404160910.28115-1-ard.biesheuvel@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
[ardb: fix up merge conflicts with 4.9.180]
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
---
This fixes the GCC build issue reported by Eike.

Note that testing of arm64 stable kernels should cover CONFIG_RANDOMIZE_BASE,
since it has a profound impact on how the kernel binary gets put together.

Should this fix be applied to 4.9 as well?

I see it in 4.14+

--
Thanks,
Sasha



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