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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

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linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

WARNING: multiple messages have this Message-ID (diff)
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

  reply	other threads:[~2023-12-06 14:11 UTC|newest]

Thread overview: 34+ 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 ` Andrea Parri
2023-11-27 10:32 ` [PATCH 1/2] locking: Introduce prepare_sync_core_cmd() Andrea Parri
2023-11-27 10:32   ` Andrea Parri
2023-11-27 12:53   ` Mathieu Desnoyers
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 10:32   ` Andrea Parri
2023-11-27 13:28   ` Mathieu Desnoyers
2023-11-27 13:28     ` Mathieu Desnoyers
2023-11-28 15:13     ` Andrea Parri
2023-11-28 15:13       ` Andrea Parri
2023-11-28 18:39       ` Mathieu Desnoyers
2023-11-28 18:39         ` Mathieu Desnoyers
2023-11-29 18:29         ` Andrea Parri
2023-11-29 18:29           ` Andrea Parri
2023-11-29 20:00           ` Mathieu Desnoyers
2023-11-29 20:00             ` Mathieu Desnoyers
2023-11-29 21:25             ` Andrea Parri
2023-11-29 21:25               ` Andrea Parri
2023-11-29 21:32               ` Mathieu Desnoyers
2023-11-29 21:32                 ` Mathieu Desnoyers
2023-11-29 22:43                 ` Andrea Parri
2023-11-29 22:43                   ` Andrea Parri
2023-12-06 13:05                   ` Palmer Dabbelt
2023-12-06 13:05                     ` Palmer Dabbelt
2023-12-06 14:11                     ` Andrea Parri [this message]
2023-12-06 14:11                       ` Andrea Parri
2023-12-06 14:15                       ` Palmer Dabbelt
2023-12-06 14:15                         ` Palmer Dabbelt
2023-12-06 17:42                         ` Andrea Parri
2023-12-06 17:42                           ` Andrea Parri
2023-12-06 17:56                           ` Palmer Dabbelt
2023-12-06 17:56                             ` Palmer Dabbelt

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