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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 781A7CA100A for ; Fri, 30 Aug 2024 16:15:02 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9F81F6B0194; Fri, 30 Aug 2024 12:15:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9814C6B0195; Fri, 30 Aug 2024 12:15:01 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 821326B0196; Fri, 30 Aug 2024 12:15:01 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 644E26B0194 for ; Fri, 30 Aug 2024 12:15:01 -0400 (EDT) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id CEA6D4053A for ; Fri, 30 Aug 2024 16:15:00 +0000 (UTC) X-FDA: 82509410760.11.925880F Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf22.hostedemail.com (Postfix) with ESMTP id EA2D0C004A for ; Fri, 30 Aug 2024 16:14:55 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=zx2c4.com header.s=20210105 header.b=X4B3Z3+R; dmarc=pass (policy=quarantine) header.from=zx2c4.com; spf=pass (imf22.hostedemail.com: domain of "SRS0=4jm9=P5=zx2c4.com=Jason@kernel.org" designates 139.178.84.217 as permitted sender) smtp.mailfrom="SRS0=4jm9=P5=zx2c4.com=Jason@kernel.org" ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1725034422; a=rsa-sha256; cv=none; b=XOdng98Vajve0xdDKu/h/scEJ646AWsqa//gBMVoYCEjLWOAPJmWqPMH42S5seQmt/5Cv3 bvBXkU0vUT0NXJp3qMffwvZ949TuJrd32ZsCBu7OP0/Iyg0DNDNl4Dp4fiamUO2V3eltEJ m1YF9+eJWb7VNSKuwAPAfwgaFKPxB8M= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=zx2c4.com header.s=20210105 header.b=X4B3Z3+R; dmarc=pass (policy=quarantine) header.from=zx2c4.com; spf=pass (imf22.hostedemail.com: domain of "SRS0=4jm9=P5=zx2c4.com=Jason@kernel.org" designates 139.178.84.217 as permitted sender) smtp.mailfrom="SRS0=4jm9=P5=zx2c4.com=Jason@kernel.org" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1725034422; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=hP39KjvEhHFzK05596i191mBdhVDUqtp/Tqc+PvtOIk=; b=6dgqSMhdlMMB9cV2Wh7hUyADIiiW5rBOKtR2bBwcH+r1wh8IDQQJ21k/bvCnXvzqXc3aQp ZkO1ZPWUwsKvdpyuRi4Z7IQmdL6gXKpDCOTnR6TvRDotA+PnBGr6jZGSaRfscyHRkUYREp 90Rq+Dr8CKGKnoUQc7JKNXFOXOjQec0= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 7F9525C10CC; Fri, 30 Aug 2024 16:14:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 933EBC4CEC2; Fri, 30 Aug 2024 16:14:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1725034490; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=hP39KjvEhHFzK05596i191mBdhVDUqtp/Tqc+PvtOIk=; b=X4B3Z3+RRpb6hKFMi1l1zo0Djitaj3Er0l8oTk/JJVDXNAhN1AX8yFBysIBe+ckynP2qVO nyIQFAJq9DymFp/Kl5+S0iFSvp3phz7shrdSoqpPTsxO0USvCUxu6X0wOHej+YBpOuYBLG er0UTBm+MFCED3Ceb8+SRsiPuJfgJrg= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 7100d0c8 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Fri, 30 Aug 2024 16:14:50 +0000 (UTC) Date: Fri, 30 Aug 2024 18:14:45 +0200 From: "Jason A. Donenfeld" To: Christophe Leroy Cc: Andrew Morton , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Michael Ellerman , Nicholas Piggin , Naveen N Rao , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Shuah Khan , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kselftest@vger.kernel.org, llvm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, Adhemerval Zanella , Xi Ruoyao Subject: Re: [PATCH v3 4/5] powerpc/vdso: Wire up getrandom() vDSO implementation on PPC32 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: EA2D0C004A X-Stat-Signature: hjhp4h14rm74qjmm5468aqya8z66n184 X-Rspam-User: X-HE-Tag: 1725034495-237339 X-HE-Meta: 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 phbB8fGG SHzv5Mgn0pCuNWF+EM0r8s8zoZkQajwrUE7vPSp4meF+Be0qFy5Glv9XzZ/D2nEK9r+nxnF0uE1TK3Oha+mg+6vxfJtpKc5vTDO+QjPbT9hQnIk4LxFVrmgqVdL5cyIrnnS7g47A0zSEn99AIiNFBXVT3XBnn20CR21qM4IDj+WrQKb//N7kex3f8oaiFu/CF+yABp7jJClwduNkATOzdehe1z7bE2WXvYQsUtmvnFjlXad6nY1YU/hWVl/tvJe5sQB+XcoFnrfNi7ZK8M7XF9QlMn054l2wcdHUFUhlAeLCW00HEc2KnMYvVP0pJN2daJ8q6tZbW3b+2H3QHYRnRgfxRp5D4ra9zZUi7KQ7wdmZrkAowY4b1PHygT/N585X+/09j1939pk8WKE9l9B5skKJCdJdBslK/n/xLmX02cfLaXLSfRva817miTw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Aug 30, 2024 at 05:57:08PM +0200, Christophe Leroy wrote: > + * r5: 8-byte counter input/output (saved on stack) > + * > + * r14-r15: counter > + */ > +SYM_FUNC_START(__arch_chacha20_blocks_nostack) > + stwu r1, -96(r1) > + stw r5, 20(r1) > + stmw r14, 24(r1) > + li r31, 4 > + LWZX_LE r14, 0, r5 > + LWZX_LE r15, r31, r5 Why swap endian on the counter?