From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C57F3C43441 for ; Thu, 29 Nov 2018 14:28:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E430213A2 for ; Thu, 29 Nov 2018 14:28:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ArqOAWVb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8E430213A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388198AbeK3BeW (ORCPT ); Thu, 29 Nov 2018 20:34:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:35512 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388186AbeK3BeV (ORCPT ); Thu, 29 Nov 2018 20:34:21 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 81F3D213A2; Thu, 29 Nov 2018 14:28:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1543501729; bh=QP1rMGR3EVc3Gu/pCDUsdcLAJBHvwHEEgkTMdph1Ph4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ArqOAWVb1CznE3eyVJ+2iZFISerN67qK8G5tC6tAp6S28Zf7Ii/UabdXgqQOt6Akb FQxQgVWDXe5lif56o+o6bF3J6n6agjKmXFFl9Opad/vZdMtcq2x932/CMkC31DVpW4 A8JUigm6LV1xrA+H3ndh61B+aplsoEBLuEpg0aJI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alistair Strachan , Stefan Agner , Ard Biesheuvel , Nick Desaulniers Subject: [PATCH 4.19 002/110] efi/libstub: arm: support building with clang Date: Thu, 29 Nov 2018 15:11:33 +0100 Message-Id: <20181129135921.329381738@linuxfoundation.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181129135921.231283053@linuxfoundation.org> References: <20181129135921.231283053@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alistair Strachan commit 41f1c48420709470c51ee0e54b6fb28b956bb4e0 upstream. When building with CONFIG_EFI and CONFIG_EFI_STUB on ARM, the libstub Makefile would use -mno-single-pic-base without checking it was supported by the compiler. As the ARM (32-bit) clang backend does not support this flag, the build would fail. This changes the Makefile to check the compiler's support for -mno-single-pic-base before using it, similar to c1c386681bd7 ("ARM: 8767/1: add support for building ARM kernel with clang"). Signed-off-by: Alistair Strachan Reviewed-by: Stefan Agner Signed-off-by: Ard Biesheuvel Cc: Nick Desaulniers Signed-off-by: Greg Kroah-Hartman --- drivers/firmware/efi/libstub/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -16,7 +16,8 @@ cflags-$(CONFIG_X86) += -m$(BITS) -D__K cflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS)) -fpie \ $(DISABLE_STACKLEAK_PLUGIN) cflags-$(CONFIG_ARM) := $(subst -pg,,$(KBUILD_CFLAGS)) \ - -fno-builtin -fpic -mno-single-pic-base + -fno-builtin -fpic \ + $(call cc-option,-mno-single-pic-base) cflags-$(CONFIG_EFI_ARMSTUB) += -I$(srctree)/scripts/dtc/libfdt