On Thursday 11 December 2014 19:27:03 Varad Gautam wrote:
> I'm getting
>
> arch/arm/kernel/efi_phys.S: Assembler messages:
> arch/arm/kernel/efi_phys.S:42: Error: selected processor does not
> support ARM mode `isb'
> arch/arm/kernel/efi_phys.S:50: Error: selected processor does not
> support ARM mode `isb'
> make[1]: *** [arch/arm/kernel/efi_phys.o] Error 1
>
> when compiling the topic-leg-uefi kernel [1] with EFI_STUB support for
> omap2plus_defconfig (to run on a BeagleBone Black with AM335x SoC). I've
> checked that armv7 supports `isb`, and I've tried the kernel.org
> 4.6.3-nolibc toolchain [2] and the Linaro gcc-arm-none-eabi-4.8 release.
> The build goes fine without EFI support. I need some help figuring out
> what's wrong.
>
The code should be changed to use the instr_sync macro instead of
using the isb instruction directly.
Arnd
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