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| author | Dave Martin <Dave.Martin@arm.com> | 2017-10-31 15:50:57 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-11-03 15:24:12 +0000 |
| commit | b472db6cf8c603809c9e177680a2fb0139218bba (patch) | |
| tree | 84d859567dcbe80f49a2267adea96632777a72ae /arch/arm64/Kconfig | |
| parent | 93390c0a1b20b98a59ee0ef1a850687b3fbc304e (diff) | |
| download | lwn-b472db6cf8c603809c9e177680a2fb0139218bba.tar.gz lwn-b472db6cf8c603809c9e177680a2fb0139218bba.zip | |
arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON
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@arm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 05aa5924420e..5cfb79d76970 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1064,6 +1064,7 @@ 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 |