From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3DD0F39060A for ; Sat, 17 Oct 2026 02:00:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792202456; cv=none; b=trakWp/2vd8fQENSWkYyTRL4r2F4Z9O3IBXFO+4oVzF5V7WjsdnWBcdP/cJ1NuIU86d1qy+5ZYLPtAY/dPBKKF/ekcUvmVIja42a8I+ffO6MihThzSUJpg8MkEJ6XQs6pXlDuX5EbVwjhvmveuYR5ZLXM7ZtObYrQcypWMPUIQE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792202456; c=relaxed/simple; bh=CFdU+j/dGmZgZzQw7Z6sK4L47lwxTGo4hNX56gRNnQ0=; h=Message-ID:From:Subject:To:Cc:In-Reply-To:References:Content-Type: Date; b=S5V1I8KP5WTg2lO86G5enMFTUvuOgEzAEiGFN1Caa5GhpgByrhLYA7Dv2rMZKagWlhCmbKocD8mqdN6aqxky0vPlFDoYVbOZtjBN4uywNEdqMnmvWNKwR6Jy+PPaH6W5Y4NylnbZBoBehpHtuERSqIB107hf+ahIZntaOD8MRUs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VT3vKJaG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="VT3vKJaG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F5771F000C4; Sat, 17 Oct 2026 02:00:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792202454; bh=CFdU+j/dGmZgZzQw7Z6sK4L47lwxTGo4hNX56gRNnQ0=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=VT3vKJaG00e1i9b6Ru/XpG1KpmecZfbFEnZKTHr0zL9esAYR1RU0tFBcf4fCsBUqh Flj2xMUTPdYdoj07xTDA2xsVb4Nzycxvk4QNttWYTOVmn4pS5qGusjWLKnehyhdZHs RIpPM5ApiJrNHrY1hPmBi6WCV/H0eZPRq0FUS63vT0lwYwoCw6NrvOOpF9gt8KL1IM cMEgRw34SAMkv/cUvcEx0AbdbpAirzivCk/EwRV4cmN22nB8YMPpnbhPHsHc2IRrPR uvFSS2fD/ZMFk71FAt9C+I2FbwJ0lxRvZDvxugFEuxntSoyS4bzspnXK/ssEkiWpBj x6O1qdLu7KqDw== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v2 2/5] alpha: stop storing the user stack pointer in pt_regs Reply-To: sashiko-reviews@lists.linux.dev To: "Matt Turner" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261016-alpha-perf-regs-v3-v2-2-17654742226a@gmail.com> References: <20261016-alpha-perf-regs-v3-v2-0-17654742226a@gmail.com> <20261016-alpha-perf-regs-v3-v2-2-17654742226a@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Sat, 17 Oct 2026 02:00:54 +0000 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > Nothing reads pt_regs->usp now that user_stack_pointer() uses the PCB. > Drop the stores, which saves a PAL_rdusp call on every syscall, and > give the field back its old name. >=20 > Assisted-by: Claude:claude-opus-5-5 > Reviewed-by: Magnus Lindholm > Tested-by: Magnus Lindholm > Acked-by: Ian Rogers > Signed-off-by: Matt Turner Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261016-alpha-perf= -regs-v3-v2-0-17654742226a@gmail.com?part=3D2