From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 355E7CA5FED for ; Tue, 6 Oct 2026 10:02:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:Message-ID: In-Reply-To:Subject:cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=LBebiUw10KtHvrfngx2zA6xcpWePvRITV2fzD/jmC+Q=; b=DdaffDo/17atWB mNAlJNuuvRDVdAAWU7j2XHCmkeyj/jOpDsA90nIvmm/xfWzIiwdmq8IS+jed2VvuQE4FKX14OAdO5 lwYHwRdkMcT+h7WqJl9Gl+JINATk9fkoto8ooXekBzBurDkQhz3rhFb4CEY5OHrJ5YdR2T/zD0f9/ d3jWvCsrYrEEF6ffSPbXv0f4TzOt/lEwQ/uQewA111n82K6w/uz03sK4T9kbDzo7AIYRkn+rx2lYv zhrOrLlvQ+RG5ZFTXEJh3XJi9P0H2Zrvc8qx0Vhyb2zyd7K65hOnOjZ+AMx88ooCUA7p+Wll0t8sR gsld8lPQLDyAjHSoqZDg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xE20Q-00000000Ree-3bHX; Tue, 06 Oct 2026 10:02:42 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xE20P-00000000Re9-3JtV for linux-riscv@lists.infradead.org; Tue, 06 Oct 2026 10:02:41 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 8B1BE435A5; Tue, 6 Oct 2026 10:02:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E6591F000FF; Tue, 6 Oct 2026 10:02:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791280961; bh=A39VzXRsHbS34EkJ/psmhi1766KD2XKbN2N/lEv/6Zg=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=MecrNhTwQ0vEq0Gx4TT6x1lr/4yWnp3c4V8ZSjQdIxq/aRSUw/6fXcgghBozZMpyP rki8Ep7g6eSlIgJd37W8jBUArT2kPhZG+h1rJ3vPHhQ6PGbtxCi/z5haMa6Cf2Wuhz +0f/jvRKbUJMCJQGW2+wUefAaPCpYGYMD0Dtr+gXHWQS+nkMlBpaMq01B4G/Ucx4QH ZqFVAINmjRLh0QcySjjtLIxEtl7spmcHHFFEaAXKoRr7SynwYCklyDj/tSjAccBH7w rpruu2B0gMHiwAsQnQw9mWYcRwgc6g97hvzuwNvd4ZiWfcW6nDIXdWFOrAcDEqcEsr 2h3C+nVRX2gMg== Date: Tue, 6 Oct 2026 04:02:35 -0600 (MDT) From: Paul Walmsley To: Andy Chiu cc: Shuah Khan , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org, llvm@lists.linux.dev, andybnac@gmail.com, dfustini@oss.tenstorrent.com, greentime.hu@sifive.com, Sergey Matyukevich , Zong Li , Yong-Xuan Wang Subject: Re: [PATCH v6 3/8] selftest: riscv: test vectorized user copy In-Reply-To: <20260918215154.2481482-4-tchiu@tenstorrent.com> Message-ID: References: <20260918215154.2481482-1-tchiu@tenstorrent.com> <20260918215154.2481482-4-tchiu@tenstorrent.com> MIME-Version: 1.0 X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Fri, 18 Sep 2026, Andy Chiu wrote: > Add a test that pushes a 1KiB pseudo-random stream through a pipe, so > write() and read() copy it in and out of the kernel on the vectorized > uaccess path, and compares the result against the original. Both buffers > shift every iteration to sweep all relative alignments, and 16 processes > per online CPU keep the vector unit contended. The compare is a byte at a > time loop through volatile pointers rather than memcmp(), keeping it scalar > and independent of the user vector state. > > Assisted-by: Claude-Code:claude-opus-5 > Signed-off-by: Andy Chiu Thanks, queued for v7.4. - Paul _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv