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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 5B198C433E9 for ; Fri, 5 Mar 2021 17:18:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 28A1565051 for ; Fri, 5 Mar 2021 17:18:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229788AbhCERRe (ORCPT ); Fri, 5 Mar 2021 12:17:34 -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-Google-Smtp-Source: ABdhPJzfKiNKYjg6f7z6fr15XCgQ0/breZONvYfwgXzPwXgjDe6AXHNnBp9m+CxfcpCHPXsoaldN7Q== 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 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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 9B67AC433E0 for ; Fri, 5 Mar 2021 17:17:14 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 2FE89650AE for ; Fri, 5 Mar 2021 17:17:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2FE89650AE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; 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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 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-Disposition: inline In-Reply-To: Cc: "Tian, Kevin" , Alex Williamson , Raj Ashok , Jonathan Corbet , Jean-Philippe Brucker , LKML , Dave Jiang , iommu@lists.linux-foundation.org, Jason Gunthorpe , Johannes Weiner , Tejun Heo , cgroups@vger.kernel.org, Wu Hao , David Woodhouse X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" 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 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Philippe Brucker Subject: Re: [RFC PATCH 15/18] cgroup: Introduce ioasids controller Date: Fri, 5 Mar 2021 18:16:45 +0100 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-Transfer-Encoding: 7bit Return-path: 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== Content-Disposition: inline In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Sender: "iommu" To: Jacob Pan Cc: "Tian, Kevin" , Alex Williamson , Raj Ashok , Jonathan Corbet , Jean-Philippe Brucker , LKML , Dave Jiang , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Jason Gunthorpe , Johannes Weiner , Tejun Heo , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Wu Hao , David Woodhouse 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