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From:   Michael Ellerman <mpe@ellerman.id.au>
To:     Ricardo Ribalda <ribalda@chromium.org>,
        Eric Biederman <ebiederm@xmission.com>,
        Philipp Rudo <prudo@linux.vnet.ibm.com>,
        Dave Young <dyoung@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
        Nathan Chancellor <nathan@kernel.org>,
        Tom Rix <trix@redhat.com>, Nicholas Piggin <npiggin@gmail.com>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>
Cc:     Baoquan He <bhe@redhat.com>, Philipp Rudo <prudo@redhat.com>,
        kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
        Ross Zwisler <zwisler@google.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Simon Horman <horms@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        llvm@lists.linux.dev, linuxppc-dev@lists.ozlabs.org,
        linux-riscv@lists.infradead.org,
        Ricardo Ribalda <ribalda@chromium.org>, stable@vger.kernel.org
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
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Ricardo Ribalda <ribalda@chromium.org> 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 <ribalda@chromium.org>
> ---
>  arch/powerpc/purgatory/Makefile | 5 +++++
>  1 file changed, 5 insertions(+)

Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

cheers