From: Andrea Parri <parri.andrea@gmail.com>
To: Palmer Dabbelt <palmer@dabbelt.com>
Cc: mathieu.desnoyers@efficios.com, paulmck@kernel.org,
Paul Walmsley <paul.walmsley@sifive.com>,
aou@eecs.berkeley.edu, mmaas@google.com, hboehm@google.com,
striker@us.ibm.com, charlie@rivosinc.com, rehn@rivosinc.com,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] membarrier: riscv: Provide core serializing command
Date: Wed, 6 Dec 2023 15:11:07 +0100 [thread overview]
Message-ID: <ZXCA+4WyI6D+Somy@andrea> (raw)
In-Reply-To: <mhng-40f43849-e610-410b-92b5-7571838ce9f5@palmer-ri-x1c9>
> I see
>
> $ git grep "config MEMBARRIER" fab957c11efe2f405e08b9f0d080524bc2631428
> fab957c11efe2f405e08b9f0d080524bc2631428:init/Kconfig:config MEMBARRIER
>
> so IMO this is just one of those forever bugs. So I'd lean towards
>
> Fixes: fab957c11efe ("RISC-V: Atomic and Locking Code")
Works for me, will apply in v2.
> (or anything in that original patch set). It's not that big of a backport,
> so I think it's safe enough?
Indeed, I think so.
The final version of this fix will likely depend on some machinery/code
introduced by 3ccfebedd8cf54 ("powerpc, membarrier: Skip memory barrier
in switch_mm()"); but, yes, nothing we can't safely adjust I think.
Thanks,
Andrea
next prev parent reply other threads:[~2023-12-06 14:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-27 10:32 [PATCH 0/2] membarrier: riscv: Provide core serializing command Andrea Parri
2023-11-27 10:32 ` [PATCH 1/2] locking: Introduce prepare_sync_core_cmd() Andrea Parri
2023-11-27 12:53 ` Mathieu Desnoyers
2023-11-27 10:32 ` [PATCH 2/2] membarrier: riscv: Provide core serializing command Andrea Parri
2023-11-27 13:28 ` Mathieu Desnoyers
2023-11-28 15:13 ` Andrea Parri
2023-11-28 18:39 ` Mathieu Desnoyers
2023-11-29 18:29 ` Andrea Parri
2023-11-29 20:00 ` Mathieu Desnoyers
2023-11-29 21:25 ` Andrea Parri
2023-11-29 21:32 ` Mathieu Desnoyers
2023-11-29 22:43 ` Andrea Parri
2023-12-06 13:05 ` Palmer Dabbelt
2023-12-06 14:11 ` Andrea Parri [this message]
2023-12-06 14:15 ` Palmer Dabbelt
2023-12-06 17:42 ` Andrea Parri
2023-12-06 17:56 ` Palmer Dabbelt
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