From nobody Fri Dec 19 04:17:00 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C307C77B7F for ; Fri, 19 May 2023 14:48:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232183AbjESOsp (ORCPT ); Fri, 19 May 2023 10:48:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232086AbjESOsc (ORCPT ); Fri, 19 May 2023 10:48:32 -0400 Received: from mail-ej1-x62a.google.com (mail-ej1-x62a.google.com [IPv6:2a00:1450:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 426B91B4 for ; Fri, 19 May 2023 07:48:29 -0700 (PDT) Received: by mail-ej1-x62a.google.com with SMTP id a640c23a62f3a-94a342f7c4cso636589966b.0 for ; Fri, 19 May 2023 07:48:29 -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=jKWHiTri4FYvKaUdsK2Yun5LzVMq0hR5qdiz2n7Tp0ed+WQpXWXu7X/WCPQ+QMjdUR kaUh8ljQgwpZGj91GOBTQs3kCZNgsxd4KjKHTxjkRnVTbwZExlUtGxq3mTbvtV6NgHRB pAUj8IEpUda/Ok4kpWQMOVjEvTz/RdSNjEKCwCVpku+ke8XNQId2JJshk1QMqxrGspOQ xwYDABIFWCTdYlZpFx99a07cmUZp4nXOul+8f3zE3Em+aeP3c+cgrr2meGFopfOBQnwq RDow317G15ebnowMY7TcjN7UWy6ymllKiA3nuXNAQa0S1FKWxOjoiWFtlhTLSFU4OWAT jxvw== X-Gm-Message-State: AC+VfDxLSxE8esDhhqe0rpQq+YGk578BZTPMh+viM2bkgoiCM5/QSD50 v9eL/WoZFEmZh/Wqr+WygyQcUg== 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: quoted-printable 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 Cc: Baoquan He , Philipp Rudo , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Ross Zwisler , Steven Rostedt , Simon Horman , Nick Desaulniers , llvm@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, Ricardo Ribalda , stable@vger.kernel.org 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Acked-by: Michael Ellerman (powerpc) --- arch/powerpc/purgatory/Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/powerpc/purgatory/Makefile b/arch/powerpc/purgatory/Makef= ile index 6f5e2727963c..78473d69cd2b 100644 --- a/arch/powerpc/purgatory/Makefile +++ b/arch/powerpc/purgatory/Makefile @@ -5,6 +5,11 @@ KCSAN_SANITIZE :=3D n =20 targets +=3D trampoline_$(BITS).o purgatory.ro =20 +# When profile-guided optimization is enabled, llvm emits two different +# overlapping text sections, which is not supported by kexec. Remove profi= le +# optimization flags. +KBUILD_CFLAGS :=3D $(filter-out -fprofile-sample-use=3D% -fprofile-use=3D%= ,$(KBUILD_CFLAGS)) + LDFLAGS_purgatory.ro :=3D -e purgatory_start -r --no-undefined =20 $(obj)/purgatory.ro: $(obj)/trampoline_$(BITS).o FORCE --=20 2.40.1.698.g37aff9b760-goog