From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 8DFE33858D1E for ; Mon, 6 May 2024 06:13:11 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 8DFE33858D1E Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 8DFE33858D1E Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714975994; cv=none; b=R9RQZOJ+cdf/euJ6cM1atWKqs+rZeAF3tjVo4wc4Bn8h9Q6jGjPmbRCS2mg8Lgj40UCOfVYlrnobAk1ELCg8vLYt4mkrk9POI3R0/Rj0/3soyFkNHFEpKuAB1/bHXC+0ezT89+9N/QTsosETi12GmzMTderZeJvYmrNerFOdQBc= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714975994; c=relaxed/simple; bh=tNWdWVQrxJUiyp+d9mIg8Ut4OptADUFe9Z9p3GwxaWA=; h=DKIM-Signature:From:To:Subject:Date:Message-ID:MIME-Version; b=E3GhV+JbaQD/E/3UC8fb53uIjdMlIYMawkbVOrBSufT8mvDQUbUOz23deh7Wjj7+S5Z8yZVbjCa5XEpsywqbkTzNtSE818CCk3q3K0Meofk9vvSiKJFBWeFemv/CuPLXQZaOmbb1B+CDPTvKOBSRUn5B3JtlpZURvhMdFVMcTWE= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1714975991; 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=mQN3O9FEV1aw5icMWduEpG5DAXVhHR8A+5HnFcmIL0E=; b=baAHsMLFZp2xu4LXCo8GIOvBX/pIvIyiPtAfIPcomBNfeINVBOM9yCilK9nxXH8YwtICic BgEkkfNf9eVz6kYlIjehI8f1JdgYqdSjhnqP/DXxpmWFsInm1hErpaTj9PiW9tZahNSrN2 cyvkO9Pn7id2ig5TJR1qwbcCB7bCOrE= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-498-eASad1q7PCe3KehP9oWHWQ-1; Mon, 06 May 2024 02:13:06 -0400 X-MC-Unique: eASad1q7PCe3KehP9oWHWQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 436913C000B0; Mon, 6 May 2024 06:13:06 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.101]) by smtp.corp.redhat.com (Postfix) with ESMTPS id EDE17492BC6; Mon, 6 May 2024 06:13:04 +0000 (UTC) From: Florian Weimer To: Peter Bergner Cc: Amrita H S , libc-alpha@sourceware.org, Paul E Murphy , Adhemerval Zanella Subject: Re: [V3] powerpc: Optimized strncmp for power10 In-Reply-To: (Peter Bergner's message of "Fri, 3 May 2024 16:31:27 -0500") References: <20240429095847.3541150-1-amritahs@linux.vnet.ibm.com> Date: Mon, 06 May 2024 08:13:03 +0200 Message-ID: <87zft3a2og.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-4.9 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,KAM_NUMSUBJECT,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: * Peter Bergner: > This code looks like it assumes the kernel is using a 4k page size. > All distros that I know of and the default kernel config for ppc64 > and ppc64le kernels is to use a 64K HW page size. Is there a reason > we're not checking for a 64k cache boundary here? The ABI says the minimum page size is 4K, right? I suppose we could add a page size check on startup and make glibc requirements configure and build time. Thanks, Florian