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 C9E13C77B73 for ; Mon, 22 May 2023 04:17:52 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4QPkgy6Z1xz3f75 for ; Mon, 22 May 2023 14:17:50 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=pgufz1uR; dkim-atps=neutral Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4QPkg35kFNz3bNn for ; Mon, 22 May 2023 14:17:03 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=pgufz1uR; dkim-atps=neutral Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4QPkft3zztz4x4B; Mon, 22 May 2023 14:16:54 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1684729020; bh=AVLVOohCWlNWsFlZp/IjXPMalhLXANn4M3eXvq7tzo4=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=pgufz1uRbk/l6Rkj1iL6mZYqH3IRjcKojpyTlmnAqC5gBLrUBoE9FFstCMUjKSjQa uv9vN+rApxtjlJ8i1zW14wzuxXSWmzFWQpJmE+6E5yQ16RHo80JIMVZFCkzEud3Rsd crFSqYweTi2+OSAyQrKmkoPy6AY1LlMn3p4HCzfgB27T+V6UTyE7OgP+ZngP7e0K/g xrERP69ypwM37e6nnw4lM8nQO1q9vvBO0V6MtmIgeKMJxW1qB5hv4V1bHGEHIl5WZr GLi3ASKQsCuuTsN3XYaBrB9DgTnDKaHMkGPu9JFhl45o+kil82t9uN8FJoBA2XwUIK n8c477C2qGY9A== From: Michael Ellerman To: Ricardo Ribalda , 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 , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou Subject: Re: [PATCH v7 3/4] powerpc/purgatory: Remove PGO flags In-Reply-To: <20230321-kexec_clang16-v7-3-b05c520b7296@chromium.org> References: <20230321-kexec_clang16-v7-0-b05c520b7296@chromium.org> <20230321-kexec_clang16-v7-3-b05c520b7296@chromium.org> Date: Mon, 22 May 2023 14:16:54 +1000 Message-ID: <87h6s59f0p.fsf@mail.lhotse> MIME-Version: 1.0 Content-Type: text/plain 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" Ricardo Ribalda writes: > 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(+) Acked-by: Michael Ellerman (powerpc) cheers