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[2620:137:e000::1:20]) by mx.google.com with ESMTP id sc33-20020a1709078a2100b007c1633cea0csi8799098ejc.513.2022.12.19.04.18.41; Mon, 19 Dec 2022 04:18:59 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=fTQC8vh3; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231167AbiLSLo6 (ORCPT + 70 others); Mon, 19 Dec 2022 06:44:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232038AbiLSLob (ORCPT ); Mon, 19 Dec 2022 06:44:31 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2D94E0BA; Mon, 19 Dec 2022 03:44:16 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3F21960F0D; Mon, 19 Dec 2022 11:44:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D98ADC433D2; Mon, 19 Dec 2022 11:44:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1671450255; bh=OuPBhqwvNtHFMcb/Xbxq79dm1uMM0B659l33Yxk/qGY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fTQC8vh3JoN7sbkaE6QgWwGu7E6hxapusdes1ufJX5Vtik2u6KT/2JxiERDyDFFSL EKde3Impl/jhzsTp8XowKQQPF7t4wyjYdoEArJVZjrnaMCPTn89Syer8ncNfydpbwQ tokhdfG+r+ywQfB8hbIIZiFt6wKN4SrbAtCGkoo1B8zjrseTpEDHM3ooU8tCXMDRe1 olNsf09t0H5TPU8mHjPoI+10cNmM6+Y0H8YgQ/neJv2FHB2r+8GQkmjORtPp3ZkWMw pi12HOq6NheGw+aNkqJGmWNag/IBDSmz/AA7pkaUnIrx3ZuT51lUuWKcaeJuQqPqQQ GIwjeke3QjHLQ== Date: Mon, 19 Dec 2022 11:44:10 +0000 From: Mark Brown To: Zenghui Yu Cc: linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, catalin.marinas@arm.com, will@kernel.org, shuah@kernel.org, wanghaibin.wang@huawei.com Subject: Re: [PATCH 2/2] kselftest/arm64: Correct buffer size for SME ZA storage Message-ID: References: <20221218092942.1940-1-yuzenghui@huawei.com> <20221218092942.1940-2-yuzenghui@huawei.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="I+PoBtwpJvjPl5Yi" Content-Disposition: inline In-Reply-To: <20221218092942.1940-2-yuzenghui@huawei.com> X-Cookie: Pay toll ahead. X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --I+PoBtwpJvjPl5Yi Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sun, Dec 18, 2022 at 05:29:42PM +0800, Zenghui Yu wrote: > It looks like a copy-paste error to describe the ZA buffer size using (the > number of P registers * the maximum size of a Z register). This doesn't > have practical impact though as we're always allocating enough space even > for the architectural maximum ZA storage, with SVL equals to 2048 bits. 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