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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
Message-ID: <87h6s59f0p.fsf@mail.lhotse>
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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