From mboxrd@z Thu Jan 1 00:00:00 1970 From: alex.bennee@linaro.org (Alex =?utf-8?Q?Benn=C3=A9e?=) Date: Fri, 18 Aug 2017 13:02:36 +0100 Subject: [PATCH 03/27] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON In-Reply-To: <1502280338-23002-4-git-send-email-Dave.Martin@arm.com> References: <1502280338-23002-1-git-send-email-Dave.Martin@arm.com> <1502280338-23002-4-git-send-email-Dave.Martin@arm.com> Message-ID: <87o9rdhyn7.fsf@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Dave Martin writes: > 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 Reviewed-by: Alex Benn?e > --- > arch/arm64/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index dfd9086..fdc302e 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -1050,6 +1050,7 @@ 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 -- Alex Benn?e