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 Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E0705C433F5 for ; Fri, 11 Feb 2022 20:04:57 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 81FED60B48; Fri, 11 Feb 2022 20:04:57 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8uP86RU2nXEt; Fri, 11 Feb 2022 20:04:56 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id 5E9D2607BC; Fri, 11 Feb 2022 20:04:56 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 410C4C001A; Fri, 11 Feb 2022 20:04:56 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id ADE85C000B for ; Fri, 11 Feb 2022 20:04:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 7D0368197D for ; Fri, 11 Feb 2022 20:04:54 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp1.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=intel.com Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fah52c9m0LCi for ; Fri, 11 Feb 2022 20:04:53 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by smtp1.osuosl.org (Postfix) with ESMTPS id C8804818EC for ; Fri, 11 Feb 2022 20:04:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1644609893; x=1676145893; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=2ZlVaDtKfVX9/LVBJ9h/jToT61g2FD0JlwafMGgpbqg=; b=Gwq/0oCEP27gIfgDjKcDZLNkHqR9+E8YVPHXfrpRFq/Edv34XEdCGA/M neWQ5iMnnhsRkKED7+06j9S2BYK8AMUIHHWT0DlaJD9Z395TULuBKeoDR 5x8Bhirll+XOagiCztowruQ7nPByjduOycVIwiJJH3rqCkYTiLZ0CN6cf 1h+EXFZjML4sr10fa0MKKUO0jdtXItaMwVNqFa7/VWC1r8Th1H4f0CGRQ KyUIqFJ9pKvfU3U7l3Ic8sFGiz/BczlUUwXbrnLlmvPdW9t++UpvYSRSB 45I8n9xmjOGLHV2MFzqiPx6xYWK+7EhTET+3cuHFZRgrYbadDZlb8GWFP w==; X-IronPort-AV: E=McAfee;i="6200,9189,10255"; a="237205073" X-IronPort-AV: E=Sophos;i="5.88,361,1635231600"; d="scan'208";a="237205073" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Feb 2022 12:04:48 -0800 X-IronPort-AV: E=Sophos;i="5.88,361,1635231600"; d="scan'208";a="702223218" Received: from otcwcpicx3.sc.intel.com ([172.25.55.73]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Feb 2022 12:04:47 -0800 Date: Fri, 11 Feb 2022 12:04:41 -0800 From: Fenghua Yu To: Thomas Gleixner , Dave Hansen , Ingo Molnar , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , Tony Luck , Lu Baolu , Joerg Roedel , Josh Poimboeuf , Jacob Pan , Ashok Raj , Ravi V Shankar Subject: Re: [PATCH v4 00/11] Re-enable ENQCMD and PASID MSR Message-ID: References: <20220207230254.3342514-1-fenghua.yu@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220207230254.3342514-1-fenghua.yu@intel.com> Cc: iommu@lists.linux-foundation.org, x86 , linux-kernel 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" Hi, Thomas, On Mon, Feb 07, 2022 at 03:02:43PM -0800, Fenghua Yu wrote: > Problems in the old code to manage SVM (Shared Virtual Memory) devices > and the PASID (Process Address Space ID) led to that code being > disabled. > > Subsequent discussions resulted in a far simpler approach: > > 1) PASID life cycle is from first allocation by a process until that > process exits. > 2) All tasks begin with PASID disabled > 3) The #GP fault handler tries to fix faulting ENQCMD instructions very > early (thus avoiding complexities of the XSAVE infrastructure) > > Change Log: > v4: > - Update commit message in patch #4 (Thomas). > - Update commit message in patch #5 (Thomas). > - Add "Reviewed-by: Thomas Gleixner " in patch #1-#3 > and patch #6-#9 (Thomas). > - Rebased to 5.17-rc3. A friendly reminder. Any comment on this series? Will you pick up this series in tip? Thank you very much! -Fenghua _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu