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From: Nam Cao <namcao@linutronix.de>
To: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>,
	"Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Alexandre Ghiti" <alex@ghiti.fr>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	"Thomas Weißschuh (Schneider Electric)"
	<thomas.weissschuh@linutronix.de>
Subject: Re: [PATCH 0/3] riscv: alternative: Statically compute alternative section boundaries and patch compat vDSO
Date: Thu, 02 Jul 2026 10:12:56 +0200	[thread overview]
Message-ID: <87fr21vmgn.fsf@yellow.woof> (raw)
In-Reply-To: <20260630-riscv-vdso32-alternative-v1-0-a32fd89b7b1c@linutronix.de>

Thomas Weißschuh <thomas.weissschuh@linutronix.de> writes:
> Currently the alternative sections are extracted from the vDSO
> binaries at runtime. This has runtime overhead and also doesn't
> work for the compat vDSO.
>
> Extract the offsets of the alternative section during the build with the
> existing symbol extraction machinery and use those.
>
> Also add support for the compat vDSO.

Reviewed-by: Nam Cao <namcao@linutronix.de>

WARNING: multiple messages have this Message-ID (diff)
From: Nam Cao <namcao@linutronix.de>
To: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>,
	"Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Alexandre Ghiti" <alex@ghiti.fr>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	"Thomas Weißschuh (Schneider Electric)"
	<thomas.weissschuh@linutronix.de>
Subject: Re: [PATCH 0/3] riscv: alternative: Statically compute alternative section boundaries and patch compat vDSO
Date: Thu, 02 Jul 2026 10:12:56 +0200	[thread overview]
Message-ID: <87fr21vmgn.fsf@yellow.woof> (raw)
In-Reply-To: <20260630-riscv-vdso32-alternative-v1-0-a32fd89b7b1c@linutronix.de>

Thomas Weißschuh <thomas.weissschuh@linutronix.de> writes:
> Currently the alternative sections are extracted from the vDSO
> binaries at runtime. This has runtime overhead and also doesn't
> work for the compat vDSO.
>
> Extract the offsets of the alternative section during the build with the
> existing symbol extraction machinery and use those.
>
> Also add support for the compat vDSO.

Reviewed-by: Nam Cao <namcao@linutronix.de>

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  parent reply	other threads:[~2026-07-02  8:12 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-30  7:41 [PATCH 0/3] riscv: alternative: Statically compute alternative section boundaries and patch compat vDSO Thomas Weißschuh
2026-06-30  7:41 ` Thomas Weißschuh
2026-06-30  7:41 ` [PATCH 1/3] riscv: vdso: Add symbols for the alternative section boundaries Thomas Weißschuh
2026-06-30  7:41   ` Thomas Weißschuh
2026-06-30  7:41 ` [PATCH 2/3] riscv: alternative: Use the statically extracted vDSO section offsets Thomas Weißschuh
2026-06-30  7:41   ` Thomas Weißschuh
2026-06-30  7:41 ` [PATCH 3/3] riscv: alternative: Also patch the compat vDSO Thomas Weißschuh
2026-06-30  7:41   ` Thomas Weißschuh
2026-07-02  8:12 ` Nam Cao [this message]
2026-07-02  8:12   ` [PATCH 0/3] riscv: alternative: Statically compute alternative section boundaries and patch " Nam Cao

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