From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Martin Subject: [PATCH 03/27] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON Date: Wed, 9 Aug 2017 13:05:09 +0100 Message-ID: <1502280338-23002-4-git-send-email-Dave.Martin@arm.com> References: <1502280338-23002-1-git-send-email-Dave.Martin@arm.com> Return-path: Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:46978 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752664AbdHIMGJ (ORCPT ); Wed, 9 Aug 2017 08:06:09 -0400 In-Reply-To: <1502280338-23002-1-git-send-email-Dave.Martin@arm.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Will Deacon , Ard Biesheuvel , Szabolcs Nagy , Richard Sandiford , kvmarm@lists.cs.columbia.edu, libc-alpha@sourceware.org, linux-arch@vger.kernel.org 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 --- 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 -- 2.1.4