On Tue, Oct 10, 2017 at 07:38:20PM +0100, Dave P Martin wrote: > The EFI runtime services ABI permits calls to EFI to clobber > certain FPSIMD/NEON registers, as per the AArch64 procedure call > standard. > > Saving/restoring the clobbered registers around such calls needs > KERNEL_MODE_NEON, but the dependency is missing from Kconfig. > > This patch adds the missing dependency. > > This will aid bisection of the patches implementing support for the > ARM Scalable Vector Extension (SVE). > > Signed-off-by: Dave Martin <Dave.Martin@xxxxxxx> > Reviewed-by: Alex Bennée <alex.bennee@xxxxxxxxxx> > --- > arch/arm64/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 0df64a6..ca711ac 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -1063,6 +1063,7 @@ config EFI_STUB > config EFI > bool "UEFI runtime support" > depends on OF && !CPU_BIG_ENDIAN > + depends on KERNEL_MODE_NEON > select LIBFDT > select UCS2_STRING > select EFI_PARAMS_FROM_FDT We could've used select KERNEL_MODE_NEON since it's a feature needed by EFI but this works for me as well as KERNEL_MODE_NEON is def_bool y already. Either way: Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
