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 Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 07CB9C77B75 for ; Fri, 19 May 2023 14:51:46 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4QN8tm4vQSz3fLL for ; Sat, 20 May 2023 00:51:44 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256 header.s=google header.b=VaD18pva; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=chromium.org (client-ip=2a00:1450:4864:20::536; helo=mail-ed1-x536.google.com; envelope-from=ribalda@chromium.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256 header.s=google header.b=VaD18pva; dkim-atps=neutral Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4QN8q406zbz3fD8 for ; Sat, 20 May 2023 00:48:31 +1000 (AEST) Received: by mail-ed1-x536.google.com with SMTP id 4fb4d7f45d1cf-50be17a1eceso5830908a12.2 for ; Fri, 19 May 2023 07:48:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1684507708; x=1687099708; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=tXwbVblZO4SjZiyR2RJlU+1lPwt65C7sEIHn8p960bg=; b=VaD18pvaYOrPW92cQcoX/NEFyAia0fIgR3ptOsuxx7KqL2m3/Fogz3ohdrjtw8jIAf /EDDCPYx2T0p21USc97DaVoXS6yaR7TsMgEpNMeajTXb8D6rWvFbDapW+nC79TBs8v+N rMi14ZDfRFVBtp/DNGdIPfZ3+MAQ50UYsHPYQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684507708; x=1687099708; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tXwbVblZO4SjZiyR2RJlU+1lPwt65C7sEIHn8p960bg=; b=UO0J/+U35gpXJ+RL04tMNwc3BwUYR30sMdPfIwVqEifw/hq2yVBIHNfl6pP7P+26Rg ns/Fr4muXV2SzoRLb5NmSuJEdS6lh+BPAvUj2cn9Wr/L4/0nIxFaaJqBBBKLf0KNOuNh lO5hAWqhZHr7bm4iK8W7vL/VUyxaBkJt8ql5AsppSMBqGamjpxm1wh0et7uoIDtU5lvT fwWiiDz8C+PNrsOY4ec/EzxfB24e5r6OjclVih5NN9d54ohQ5F0JIKflar1IuZL5AWcp OQU7zVRn9AvW74HG2JXcrwQoPj0J52P6oWJ5dJYDIrH5wigxH9tPvYfpP+zT8vKgxmCV K1tA== X-Gm-Message-State: AC+VfDwbY3NxGF5hvvsGJufLLbxmSUjGdQVeHYn5uhZPs8+tiePgKN3a GxLMSiNqYk91DgXyXyLnmqSGkg== X-Google-Smtp-Source: ACHHUZ6IJYry1zbpAYrsb/Nt01gDEwYVyd3RcsdkRiDkcM4NVXli57Wi75rvrU+p/H5SVbhZnecZhA== X-Received: by 2002:a17:906:5d09:b0:948:a1ae:b2c4 with SMTP id g9-20020a1709065d0900b00948a1aeb2c4mr2454616ejt.6.1684507708255; Fri, 19 May 2023 07:48:28 -0700 (PDT) Received: from alco.roam.corp.google.com ([2620:0:1059:10:62fd:274b:c2ab:69bb]) by smtp.gmail.com with ESMTPSA id a2-20020a17090680c200b0096a68648329sm2349437ejx.214.2023.05.19.07.48.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 May 2023 07:48:27 -0700 (PDT) From: Ricardo Ribalda Date: Fri, 19 May 2023 16:47:38 +0200 Subject: [PATCH v7 3/4] powerpc/purgatory: Remove PGO flags MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20230321-kexec_clang16-v7-3-b05c520b7296@chromium.org> References: <20230321-kexec_clang16-v7-0-b05c520b7296@chromium.org> In-Reply-To: <20230321-kexec_clang16-v7-0-b05c520b7296@chromium.org> To: Eric Biederman , Philipp Rudo , Dave Young , Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Nathan Chancellor , Tom Rix , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1118; i=ribalda@chromium.org; h=from:subject:message-id; bh=nWZ2BYP6i2Y8oRo+uF2PHambNY95ZiGn4TiaTAGbKto=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBkZ4wyHkNCHhezyfivzJzrNGMs0K4vUNQRc3pJJ kWHuaNU3qOJAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCZGeMMgAKCRDRN9E+zzrE iP+cEACcWHC3j1LmIzpKx/SEOuyu+T8juc3Qsp240gztvu/viz42y8/iBia84BlsRwErLK2OL0F 3ajW94BvdF+hTyHozZEgIagItfSauWAbew6wVa0Qzfv2fr5mU42KfHptzq1l42en7K2rPbcBmLI I2P1/oqo/f6jOgRfm+rkNph26o3SqzcGwOrNJxLkICIjOt2ryabXBD6m79TkrzdPaB9SoChGJac O79LnGL81Pw+Yncu0mYsV4I5Rjw5ZeyFHdpQ7Fz5EA8wvSDDG6odoFxcqf4yE6+bmUv/49AELSz 4dxJdTvbEKZro9lHA0iSPkRPv/S0GQJu/n8ilKFXAYPfqAfDYAN86mjt4xRWsDrK/m2U5bJyQDO y1Bsea8Nuec1BFMA7YRXUDVC9wxgK6i5U1QYeDdEOWjG8KsrN7aDk6FT7Vs5HVZVFlpaYzxI1Qy OuCwULJN4OB++Blq1pndCgv3Enk4iWEnD3tV8M5ZGZEkwnZmi1PxTzTAUZrdHBuiBcGUJURHEal /D5/1Q6A+bUxW980Yzwcu1tPuxwKe1lCW0boDcrNi3inwoNG0wyymcZvtfl/+IKzenjCXxuZ8c4 54evV8xE1nlppSTiE5EscgwFuFxb6elq+Frz99s4912olrL9bjc84OFEQ1brCORAnz/ZbTuENqO ZuH2pEvCDHPT0rw== X-Developer-Key: i=ribalda@chromium.org; a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nick Desaulniers , Baoquan He , Philipp Rudo , llvm@lists.linux.dev, Ross Zwisler , linux-kernel@vger.kernel.org, Steven Rostedt , stable@vger.kernel.org, Simon Horman , Ricardo Ribalda , linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, kexec@lists.infradead.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" If profile-guided optimization is enabled, the purgatory ends up with multiple .text sections. This is not supported by kexec and crashes the system. Cc: stable@vger.kernel.org Fixes: 930457057abe ("kernel/kexec_file.c: split up __kexec_load_puragory") Signed-off-by: Ricardo Ribalda --- arch/powerpc/purgatory/Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/powerpc/purgatory/Makefile b/arch/powerpc/purgatory/Makefile index 6f5e2727963c..78473d69cd2b 100644 --- a/arch/powerpc/purgatory/Makefile +++ b/arch/powerpc/purgatory/Makefile @@ -5,6 +5,11 @@ KCSAN_SANITIZE := n targets += trampoline_$(BITS).o purgatory.ro +# When profile-guided optimization is enabled, llvm emits two different +# overlapping text sections, which is not supported by kexec. Remove profile +# optimization flags. +KBUILD_CFLAGS := $(filter-out -fprofile-sample-use=% -fprofile-use=%,$(KBUILD_CFLAGS)) + LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined $(obj)/purgatory.ro: $(obj)/trampoline_$(BITS).o FORCE -- 2.40.1.698.g37aff9b760-goog