Hi folks, We recently [1] enabled support for CMDLINE_EXTEND on arm64, however when I started looking at replacing Android's out-of-tree implementation [2] with the upstream version, I noticed that the two behave significantly differently: Android follows the Kconfig help text of appending the bootloader arguments to the kernel command line, whereas upstream appends the kernel command line to the bootloader arguments. That is, except for the EFI stub, which follows the documented behaviour. I think the documented behaviour is more useful, so this patch series reworks the FDT code to follow that and updates the very recently merged arm64 idreg early command-line parsing as well. I'd like to take the first patch as a fix via the arm64 tree. Cheers, Will [1] https://lore.kernel.org/r/160650434702.20875.12520970127987518808.b4-ty@xxxxxxx [2] https://android-review.googlesource.com/c/kernel/common/+/841045 --->8 Cc: Max Uvarov <muvarov@xxxxxxxxx> Cc: Rob Herring <robh@xxxxxxxxxx> Cc: Ard Biesheuvel <ardb@xxxxxxxxxx> Cc: Marc Zyngier <maz@xxxxxxxxxx> Cc: Doug Anderson <dianders@xxxxxxxxxxxx> Cc: Tyler Hicks <tyhicks@xxxxxxxxxxxxxxxxxxx> Cc: Frank Rowand <frowand.list@xxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: <kernel-team@xxxxxxxxxxx> Cc: <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx> Cc: <devicetree@xxxxxxxxxxxxxxx> Will Deacon (2): arm64: cpufeatures: Fix handling of CONFIG_CMDLINE for idreg overrides of/fdt: Append bootloader arguments when CMDLINE_EXTEND=y arch/arm64/kernel/idreg-override.c | 44 +++++++++++--------- drivers/of/fdt.c | 64 ++++++++++++++++++------------ 2 files changed, 64 insertions(+), 44 deletions(-) -- 2.30.1.766.gb4fecdf3b7-goog
