From patchwork Fri Oct 27 10:50:45 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dave Martin X-Patchwork-Id: 23914 Received: (qmail 115754 invoked by alias); 27 Oct 2017 10:51:28 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 115717 invoked by uid 89); 27 Oct 2017 10:51:28 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-26.9 required=5.0 tests=BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RP_MATCHES_RCVD, SPF_PASS autolearn=ham version=3.3.2 spammy=Hx-languages-length:1095 X-HELO: foss.arm.com From: Dave Martin To: linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Will Deacon , Ard Biesheuvel , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Szabolcs Nagy , Okamoto Takayuki , kvmarm@lists.cs.columbia.edu, libc-alpha@sourceware.org, linux-arch@vger.kernel.org Subject: [PATCH v4 03/28] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON Date: Fri, 27 Oct 2017 11:50:45 +0100 Message-Id: <1509101470-7881-4-git-send-email-Dave.Martin@arm.com> In-Reply-To: <1509101470-7881-1-git-send-email-Dave.Martin@arm.com> References: <1509101470-7881-1-git-send-email-Dave.Martin@arm.com> MIME-Version: 1.0 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 Bennée Acked-by: Catalin Marinas Cc: Ard Biesheuvel --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 05aa592..5cfb79d 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