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Date: Mon, 4 Mar 2024 19:27:04 +0000
From: Conor Dooley <conor@kernel.org>
To: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Andrea Parri <andrea@rivosinc.com>,
	Samuel Holland <samuel.holland@sifive.com>,
	Anup Patel <anup@brainfault.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	linux-trace-kernel@vger.kernel.org,
	=?iso-8859-1?Q?Bj=F6rn_T=F6pel?= <bjorn@rivosinc.com>,
	Andrea Parri <parri.andrea@gmail.com>
Subject: Re: [PATCH v3 2/2] riscv: Fix text patching when IPI are used
Message-ID: <20240304-makeshift-bakeshop-26c9611de1a3@spud>
References: <20240229121056.203419-1-alexghiti@rivosinc.com>
 <20240229121056.203419-3-alexghiti@rivosinc.com>
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On Thu, Feb 29, 2024 at 01:10:56PM +0100, Alexandre Ghiti wrote:
> For now, we use stop_machine() to patch the text and when we use IPIs for
> remote icache flushes (which is emitted in patch_text_nosync()), the syst=
em
> hangs.
>=20
> So instead, make sure every CPU executes the stop_machine() patching
> function and emit a local icache flush there.
>=20
> Co-developed-by: Bj=F6rn T=F6pel <bjorn@rivosinc.com>
> Signed-off-by: Bj=F6rn T=F6pel <bjorn@rivosinc.com>
> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
> Reviewed-by: Andrea Parri <parri.andrea@gmail.com>

What commit does this fix?


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