From nobody Fri Dec 19 04:16:37 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 D21C9C7EE21 for ; Mon, 1 May 2023 12:39:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232562AbjEAMjQ (ORCPT ); Mon, 1 May 2023 08:39:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232556AbjEAMjE (ORCPT ); Mon, 1 May 2023 08:39:04 -0400 Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3452E58 for ; Mon, 1 May 2023 05:39:02 -0700 (PDT) Received: by mail-ed1-x531.google.com with SMTP id 4fb4d7f45d1cf-50bc4d96e14so8630207a12.1 for ; Mon, 01 May 2023 05:39:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1682944742; x=1685536742; 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=vsOOlRTCOjL3abNi/3ZUSQqB4+vgvV69cdyU9ee1C48=; b=hODYeDeYg6APhZAviVEDv24zkkV5PSyD9YF80bCIKMgiHcDDsd8y08C3drl6nvnGJD IlJxYRT/wEBGX7nbEciydDBBtR5sxWJSS+Q1JOTL+EYkrNHQvWMsz4+2JhTAsCU5cMFe Ea+MOxsYngr/dEQhvm3KkMoPZiJyiwADd2JrY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682944742; x=1685536742; 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=vsOOlRTCOjL3abNi/3ZUSQqB4+vgvV69cdyU9ee1C48=; b=cbvArH7xDGKhcS4k09RJUxv+BJTrExTjlxy5kT3W3uG3t1FcA1+eJe3CuRmeImImcp bIj9pc9VMVv2m6HCmjuMlhnfBE1L7JbFfLFkATCzi+9oS7eLYzPdCYnek5o+TT6+ZsML EzSM0iXP8Q9MN0ZKi5IR3R8hv0vMqp0o+GWdrLi51Mw6Q48m/rS81HB6cYn42Vxhsv15 t02vuUhf5s43gCuyVJzuzX75ii5Yl9ZCA3PPjwRYE1rBbBfS7+RLDh+VQsxhlj5SwxEN QkdqktPGBv9KrF8csIakzmM83hPuwVw4Nb14bKlHuvtHWgaKouplEV3/npntPGB3yxJ0 Vbbg== X-Gm-Message-State: AC+VfDzx6cMSNXL/c1U62x4ggOE3K31hTyPZMnLa1zG+i8Tt/LZpb2GA hKu+WFW8ABqSR7RslJimJob/2w== X-Google-Smtp-Source: ACHHUZ4EUorB+1FZYBv1RP6+ov+r8A+Pc1H1dxULnrAhwBqWHXQ9LjOP3Ez/dznJWtTpBeBKUxYLqg== X-Received: by 2002:a05:6402:27c8:b0:504:77ed:5a33 with SMTP id c8-20020a05640227c800b0050477ed5a33mr5864584ede.8.1682944742259; Mon, 01 May 2023 05:39:02 -0700 (PDT) Received: from alco.roam.corp.google.com ([2620:0:1059:10:c573:159e:712e:688b]) by smtp.gmail.com with ESMTPSA id c8-20020aa7c988000000b0050bcbb5708asm146772edt.35.2023.05.01.05.39.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 May 2023 05:39:02 -0700 (PDT) From: Ricardo Ribalda Date: Mon, 01 May 2023 14:38:22 +0200 Subject: [PATCH v6 4/4] risc/purgatory: Add linker script MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20230321-kexec_clang16-v6-4-a2255e81ab45@chromium.org> References: <20230321-kexec_clang16-v6-0-a2255e81ab45@chromium.org> In-Reply-To: <20230321-kexec_clang16-v6-0-a2255e81ab45@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=1219; i=ribalda@chromium.org; h=from:subject:message-id; bh=ECbK3ORJb/ox8qpp2VcGabf7Ou2PzFFDokGI84nq/PQ=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBkT7Lc5MTx2hMC4Re9phVjZPNed9BIxos1Pxii0 61fGiCxDbqJAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCZE+y3AAKCRDRN9E+zzrE iJuYD/9j2b1eDvjy+uQCumtGC2Jn+H/Md0JWPsxPb46aNyMDJJYtpnBOkQyLCIR1Ro6iTpnQQLM +8uN/ou0X4CF9cfN+g6f5JwkPoQfQcP+jYNP8HE3vvJyaw+gY8gFKrsolGYojIu5+7EZscjeM+x 7hCRkxslbxzkKo8bCXJPNM5bL+TS+8voKLtJw5vxmDtH71krf0z6Gp38OUM1qbruri9kSi75MmP pPIc503fFiicjySfDDJ804XtSoK2FjXUVn96C+XtJdu8JE5WpzayNi5G1CCxtOHmymMyPL11Nyb +Y3kXDpLRgX+07NcFuZOiO/0ThN8bGM98On1cBYfS5PV2bqYo2Cv6+KOCjnObJd8T8zLrIWY31E dkIZGehfJGieHtPMQYd0Up0Q7UFloD9EOCUk3YXQjbVL5YW62U0ajBT0UqSNiyO8Fk5AdOGQnDv M1oDH7eB6zhw04nOc8MvRcEL1vb70bgueckn6cp6u0ViYD7VRwHLkKiDx9y2wl93EfhhVpu9EpQ 108x63OJbcTsVjOEtHREb8lzuERyPHJsPH5o49C5N+yZd7HKY8dMY7vi4/kdo4rqsrCdLSOYIRN nVm4G0/Z6eWsohGrZwA5weUUpMcYwEHd+mCMobjyQ8WPRg/nBapyYtxdaEgYMK3As9R4j0j3G0s Q5pwBDSsFyR/N1Q== X-Developer-Key: i=ribalda@chromium.org; a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If PGO 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: Palmer Dabbelt --- arch/riscv/purgatory/Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/riscv/purgatory/Makefile b/arch/riscv/purgatory/Makefile index 5730797a6b40..cf3a44121a90 100644 --- a/arch/riscv/purgatory/Makefile +++ b/arch/riscv/purgatory/Makefile @@ -35,6 +35,11 @@ CFLAGS_sha256.o :=3D -D__DISABLE_EXPORTS CFLAGS_string.o :=3D -D__DISABLE_EXPORTS CFLAGS_ctype.o :=3D -D__DISABLE_EXPORTS =20 +# When profile optimization is enabled, llvm emits two different overlappi= ng +# text sections, which is not supported by kexec. Remove profile optimizat= ion +# flags. +KBUILD_CFLAGS :=3D $(filter-out -fprofile-sample-use=3D% -fprofile-use=3D%= ,$(KBUILD_CFLAGS)) + # When linking purgatory.ro with -r unresolved symbols are not checked, # also link a purgatory.chk binary without -r to check for unresolved symb= ols. PURGATORY_LDFLAGS :=3D -e purgatory_start -z nodefaultlib --=20 2.40.1.495.gc816e09b53d-goog