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 9BDC6C77B7F for ; Fri, 19 May 2023 14:49:22 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4QN8r06Kddz3fJj for ; Sat, 20 May 2023 00:49:20 +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=msg2K7je; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=chromium.org (client-ip=2a00:1450:4864:20::62d; helo=mail-ej1-x62d.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=msg2K7je; dkim-atps=neutral Received: from mail-ej1-x62d.google.com (mail-ej1-x62d.google.com [IPv6:2a00:1450:4864:20::62d]) (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 4QN8q15Gytz3fD8 for ; Sat, 20 May 2023 00:48:27 +1000 (AEST) Received: by mail-ej1-x62d.google.com with SMTP id a640c23a62f3a-96f6e83e12fso99176366b.1 for ; Fri, 19 May 2023 07:48:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1684507702; x=1687099702; h=cc:to:content-transfer-encoding:mime-version:message-id:date :subject:from:from:to:cc:subject:date:message-id:reply-to; bh=4Pi3Rw8sgVO8xNLiFOSc3vh8jvsieIJmukGipCTTKtY=; b=msg2K7jeMevFEiMSN8QJQ/3c/dYy37lA8oHNZqtHi2kDelQ3Ar1DrcDAHBEHqiSFit uYkUcdH7QTIRUnajGapBzF1iozq//DsG4gEDw3uGf9IUdvwMgVv0AbKqAB35yYQ+dNHA O3tLZxHzcwjRNtoZhpEuhaA+BSYcaRmHDz+TU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684507702; x=1687099702; h=cc:to:content-transfer-encoding:mime-version:message-id:date :subject:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=4Pi3Rw8sgVO8xNLiFOSc3vh8jvsieIJmukGipCTTKtY=; b=dGkeLQF1f4EkwmkcXEiCjnNS3yzyOOD0uBZZGiwc2QF8jA4yEiCtkFa63ZCHNeF825 8y4o9UZwYtW7+g3ttSlVXBvuRZdcB1tB5UbT41GbXd40uD6W6d50XvaHHiVT18K+UzEt Qc0FCOzDUTalF7ipFeeABzyv0r/3RcQXGJ/uBloLEH1EF5+Ek4cZ3dYM3nKWTufaSnfN WU9C9FajQlSoS1cuSSWXJR+4boEVBNu1oAawHn0fLHF/4181WnlTGzvVpeBaPEbtoiLi cBFUkuUDud+J1b0cnb7GvrcINQzoMPGUzYJbotO6M222Oez6XuXESDSNC1Ry4GrwN/Q3 p0Jg== X-Gm-Message-State: AC+VfDyQ2FkFBft+y2LRRbbWMWJ9cSvoJc6S4EVwE68OYRI1H3wXWKAY LtGav4mRb+/M6UBuN+wVVXeAAQ== X-Google-Smtp-Source: ACHHUZ5MUiw26m3rCs8XC1mrIu74pUR1qli+EK5QOjHWaKOChgchSRO6OKsp0cMc1uGVgjtxdYp2FA== X-Received: by 2002:a17:907:7b98:b0:965:ff38:2fb3 with SMTP id ne24-20020a1709077b9800b00965ff382fb3mr2160890ejc.74.1684507702682; Fri, 19 May 2023 07:48:22 -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.214.2023.05.19.07.48.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 May 2023 07:48:22 -0700 (PDT) From: Ricardo Ribalda Subject: [PATCH v7 0/4] kexec: Fix kexec_file_load for llvm16 with PGO Date: Fri, 19 May 2023 16:47:35 +0200 Message-Id: <20230321-kexec_clang16-v7-0-b05c520b7296@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAeMZ2QC/33QwWrDMAwA0F8pPs/Dsi3b6Wn/McZIZKUxSxNw1 rBR8u9TdxxZTkISehK6q4Vr4UWdT3dVeS1LmSdJ4tNJ0dBOF9YlS66ssc44C/qDv5jeaZQeBO0 RDFmXwTakZKZrF9ZdbScaZGq6jaMUh7J8zvX7d8cKEl7/41bQRrcxpJ4sRfL5hYY6X8vt+jzXi 3oTbLWHgBUgg2HMCDGFZgdwh4ATAHsDgVI2nOIO4A8BLwA4bxBS3yTeuwAPAXxcgMF1vXwAots BwiEQHk+0FpETtJ3HP8C2bT8j1I769wEAAA== 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=2021; i=ribalda@chromium.org; h=from:subject:message-id; bh=/xaeieVFQ6xdVDAz17gKeKb/9LFf3JIRAWtpj04iWQs=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBkZ4wblqq2vLEoov6/zQ06eVyMdiDERAJkV5+vM 0Kb8EQIujWJAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCZGeMGwAKCRDRN9E+zzrE iGc6D/9Uc+9TyN5zpqQv/iPV4DIP0EzzJIG/jXsFC25ZH9GGK0P96Opd5J5JN/UBqzVN1pPqTG8 whwLcR1HGsHebM96si7noWhhoeQFYNZsfECVOBnJrtr5+Tgxi3gbHmt9SbQK/ooI8sCV2fE9OLO +6jUrRN8J2/GnSXGouHOTiHbDvSA1pJk0b9fKMnYWKf/lYNFuIO9Ol6T8wD35b3IP2eW0pUKlmE 4DjAr09BunIB/vGH5dzsxU4gBzL5PAuyoEXRI1hwItqrkkYg9BDfir75GxJRAGnXhbd3je5gB7w GQWCdkOsOtKMG/aGAsrGVq+zJZ0IoiB8C6yOOgHM4pKwlGW8+dIr+mXf2oVCu6ARy7RSPU5SuC5 JAiNIJ6RnJfqXbFoL/qSGqKXwj5MD7lDnA9j420LvaDbvnyAaA5kqh+CTg3iBRmQSZlPYzjf962 lYpA3mDeFRUnH/0F9ADI43vIzU0OhBL82x5IdqlKa53O+slulwrIu6A4jbqHOzcG0B2t3wbMZYu 14UaQd3qxdzkYwDNz54i/nrQ5aRZfXFy1POrJyVK+Ot4AWdWvANYRQ4AT2kdOh89qMvSsGY27ik a2Xm5HkapVpv0I+1+r5A3tNL2x39NooxsWrVmMyMO0+ke+HCx6m8/KbxNZcxxP9vzqf2SGxCVDj TgRqej+1SpCQ5XA== 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 , Palmer Dabbelt , 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" When upreving llvm I realised that kexec stopped working on my test platform. The reason seems to be that due to PGO there are multiple .text sections on the purgatory, and kexec does not supports that. Signed-off-by: Ricardo Ribalda --- Changes in v7: - Fix $SUBJECT of riscv patch - Rename PGO as Profile-guided optimization - Link to v6: https://lore.kernel.org/r/20230321-kexec_clang16-v6-0-a2255e81ab45@chromium.org Changes in v6: - Replace linker script with Makefile rule. Thanks Nick - Link to v5: https://lore.kernel.org/r/20230321-kexec_clang16-v5-0-5563bf7c4173@chromium.org Changes in v5: - Add warning when multiple text sections are found. Thanks Simon! - Add Fixes tag. - Link to v4: https://lore.kernel.org/r/20230321-kexec_clang16-v4-0-1340518f98e9@chromium.org Changes in v4: - Add Cc: stable - Add linker script for x86 - Add a warning when the kernel image has overlapping sections. - Link to v3: https://lore.kernel.org/r/20230321-kexec_clang16-v3-0-5f016c8d0e87@chromium.org Changes in v3: - Fix initial value. Thanks Ross! - Link to v2: https://lore.kernel.org/r/20230321-kexec_clang16-v2-0-d10e5d517869@chromium.org Changes in v2: - Fix if condition. Thanks Steven!. - Update Philipp email. Thanks Baoquan. - Link to v1: https://lore.kernel.org/r/20230321-kexec_clang16-v1-0-a768fc2c7c4d@chromium.org --- Ricardo Ribalda (4): kexec: Support purgatories with .text.hot sections x86/purgatory: Remove PGO flags powerpc/purgatory: Remove PGO flags riscv/purgatory: Remove PGO flags arch/powerpc/purgatory/Makefile | 5 +++++ arch/riscv/purgatory/Makefile | 5 +++++ arch/x86/purgatory/Makefile | 5 +++++ kernel/kexec_file.c | 14 +++++++++++++- 4 files changed, 28 insertions(+), 1 deletion(-) --- base-commit: 58390c8ce1bddb6c623f62e7ed36383e7fa5c02f change-id: 20230321-kexec_clang16-4510c23d129c Best regards, -- Ricardo Ribalda Delgado