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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B303C54FC9 for ; Tue, 21 Apr 2020 16:53:51 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C9DA7206F4 for ; Tue, 21 Apr 2020 16:53:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="TUzQxXT6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C9DA7206F4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject: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=RHIGgdQIDbbryC0BWGcfBW2G1o5O+Fqb35O38EK2u0M=; b=TUzQxXT6vjeSOH C/dpDfT4ZdOzxT1w1n5iiem7ArcyKAeUwqfJUN19eIjB/fhrkt3nFY8/ZSzTdKidhQ+ukf9tZBiU1 NrORJpGlIJbd7WjAPOtcILnM2alEo+BE1TP15xiuYhRizAJgxxjQvcEpEPXn6tiBCqsLO7yUUegYc dP/ooAOeFlqvxRPOC8cE1w/r/Dvy7JKQzJVOmahLfhx6PqVTvXBOafQv6AgRSrsmwGqBA2Y7+JGuw jk9x0a7RFU+0xkTBefRIthLCJ0mggAdL1sZHCZCwolRXbGyd0aNB1rbiOm9pfCQzubn42eAmnxRdw benwad6Lh8sHxGP9hX+Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jQw9d-00037x-67; Tue, 21 Apr 2020 16:53:49 +0000 Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jQw9a-00036p-7v; Tue, 21 Apr 2020 16:53:46 +0000 Date: Tue, 21 Apr 2020 09:53:46 -0700 From: Christoph Hellwig To: Zhenyu Ye Subject: Re: [PATCH v1 1/6] arm64: Detect the ARMv8.4 TTL feature Message-ID: <20200421165346.GA11171@infradead.org> References: <20200403090048.938-1-yezhenyu2@huawei.com> <20200403090048.938-2-yezhenyu2@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200403090048.938-2-yezhenyu2@huawei.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, peterz@infradead.org, catalin.marinas@arm.com, linux-mm@kvack.org, guohanjun@huawei.com, will@kernel.org, linux-arch@vger.kernel.org, yuzhao@google.com, maz@kernel.org, steven.price@arm.com, arm@kernel.org, Dave.Martin@arm.com, arnd@arndb.de, suzuki.poulose@arm.com, npiggin@gmail.com, zhangshaokun@hisilicon.com, broonie@kernel.org, rostedt@goodmis.org, prime.zeng@hisilicon.com, kuhn.chenqun@huawei.com, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, xiexiangyou@huawei.com, linux-kernel@vger.kernel.org, aneesh.kumar@linux.ibm.com, akpm@linux-foundation.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Apr 03, 2020 at 05:00:43PM +0800, Zhenyu Ye wrote: > From: Marc Zyngier > > In order to reduce the cost of TLB invalidation, the ARMv8.4 TTL > feature allows TLBs to be issued with a level allowing for quicker > invalidation. What does "issued with a level" mean? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel