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[23.128.96.18]) by mx.google.com with ESMTP id y1si1883304edp.72.2021.03.05.09.19.57; Fri, 05 Mar 2021 09:20:20 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b="tzl5fhX/"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229783AbhCERRd (ORCPT + 99 others); Fri, 5 Mar 2021 12:17:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229578AbhCERRJ (ORCPT ); Fri, 5 Mar 2021 12:17:09 -0500 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1139CC061574 for ; Fri, 5 Mar 2021 09:17:09 -0800 (PST) Received: by mail-wr1-x435.google.com with SMTP id u16so2907112wrt.1 for ; Fri, 05 Mar 2021 09:17:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=Omevd0FBx005iXL14bFQltfa8ss9fF32vxOQu4J/uVM=; b=tzl5fhX/krPPRB6sEiaTWhW3YSjAMn88PlLbuYq0oNviAauvjp07tfa/KV98lTpk8/ NLtaeVriS8ldYE4HDi94XRMPJg/1jy8NVsE89wO9zNH5POQyMAGWdMezN8SXiSGCA+SW kTdZqwqIDjGngUrv3hzgxlYhC+UDloP7Y7T0o+4Iw9QzRzG2RT802XrB52IFqNQMSJTj 98HpANBxIWiGVNQHsqfmaNpvFN2VFuPOYEeZzoSAYzrboUEKuii9VegR/lZKLsUtYiId OItjdFaJCWib4s1ZjBYyiFg/qes7r9HJfyzcGqhdcmnL0LKAYU+sK7HFcG7Iii62F6mW 2C9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=Omevd0FBx005iXL14bFQltfa8ss9fF32vxOQu4J/uVM=; b=UHA1tNYHnuKLgVxmXYzQiha05fxuoG+590kkqFMjLb387ACvn9lh/aQ1ggfRd0RwuB kFCkTaYX+WdGC1vhhsXVxMizs6JDu4AYqJWGo5q4L7u/j7eQPBq8jRNGmgKI60URbH4S 4WbLGmrZM4gd6yzRQnmWY2qifaC+tmgN3p+seH7S7Hs2QE15iaBimXDnfW7pgm6IFY+a x+EeFy/v9B8G6wofKwdjeJtIWBb/uB7JFDKUorPvdWe2syRks9WOIX82DM54qu/R83rq sXiZNTsYIhChT3lmrFNFw8ok4oi2DAkWoIJHxihlLskJ5yoq8SUpGnTUyzGh/CXQCRXw VvMA== X-Gm-Message-State: AOAM532rWmdRizo7j8EwemYxKn+pY70KnRTNBJDHSLR6VY7BduhYo9VC sq2eg99cQvBmCr4IIBDCSGPiPw== X-Received: by 2002:a5d:468e:: with SMTP id u14mr10462111wrq.359.1614964627745; Fri, 05 Mar 2021 09:17:07 -0800 (PST) Received: from myrica ([2001:1715:4e26:a7e0:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id l15sm5462818wru.38.2021.03.05.09.17.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Mar 2021 09:17:07 -0800 (PST) Date: Fri, 5 Mar 2021 18:16:45 +0100 From: Jean-Philippe Brucker To: Jacob Pan Cc: Tejun Heo , LKML , Joerg Roedel , Lu Baolu , David Woodhouse , iommu@lists.linux-foundation.org, cgroups@vger.kernel.org, Johannes Weiner , Jean-Philippe Brucker , Alex Williamson , Eric Auger , Jason Gunthorpe , Jonathan Corbet , Raj Ashok , "Tian, Kevin" , Yi Liu , Wu Hao , Dave Jiang Subject: Re: [RFC PATCH 15/18] cgroup: Introduce ioasids controller Message-ID: References: <1614463286-97618-1-git-send-email-jacob.jun.pan@linux.intel.com> <1614463286-97618-16-git-send-email-jacob.jun.pan@linux.intel.com> <20210303131726.7a8cb169@jacob-builder> <20210303160205.151d114e@jacob-builder> <20210304094603.4ab6c1c4@jacob-builder> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 05, 2021 at 09:30:49AM +0100, Jean-Philippe Brucker wrote: > That works but isn't perfect, because the hardware resource of shared > address spaces can be much lower that PID limit - 16k ASIDs on Arm. To Sorry I meant 16-bit here - 64k Thanks, Jean