diff mbox

[RFC,v2,06/41] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON

Message ID 1490194274-30569-7-git-send-email-Dave.Martin@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Dave Martin March 22, 2017, 2:50 p.m. UTC 
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>
---
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 3741859..6f270a8 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1019,6 +1019,7 @@  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