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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id AFEEAC433F5 for ; Thu, 28 Apr 2022 15:05:27 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 6275C410C2; Thu, 28 Apr 2022 15:05:27 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vEMGxoEoHgvc; Thu, 28 Apr 2022 15:05:26 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id 218854098B; Thu, 28 Apr 2022 15:05:25 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id CCB46C0032; Thu, 28 Apr 2022 15:05:25 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 97F3CC002D for ; Thu, 28 Apr 2022 15:05:24 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 85B4983E30 for ; Thu, 28 Apr 2022 15:05:24 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp1.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=infradead.org 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 BFHx-15wvXju for ; Thu, 28 Apr 2022 15:05:24 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by smtp1.osuosl.org (Postfix) with ESMTPS id 0E21D831C1 for ; Thu, 28 Apr 2022 15:05:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=DyT65p8JLEwgliFAAtKUa16bmBnVnf06R0IAvK3Qq+8=; b=cxd4QAK5yB3utYqNw3LEJ1Z64h 7q/EJ9fWB0z1urAmfvR1lCEk96vihnZPspPUndgNgKA1F9vpWlArIHTIR8oMzHVhAwDY1bABEcEjY 0jLay+38PVJ7uU0/6/FHo9I13nZEjXXqjjGik9BAxcigXOmKfnuf1So6FGpiM3S9Ssl0+9yRlSi/T ux/N4EApX9dSRm65GpfBU1EUnAmo38emdVnjdcvI8CKUl7A/cVT9/Ojpp0t8H5y7ec5j82GoQFHP3 czvjO1kgb6cgysZ3Zr8rj65fGwsByl72HmzhPIMuw5hAQVGUcD1tynztPvdzTojer/FQJqmZKiKg+ hZbd7iTA==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nk5he-007aFM-B6; Thu, 28 Apr 2022 15:05:10 +0000 Date: Thu, 28 Apr 2022 08:05:10 -0700 From: Christoph Hellwig To: Andi Kleen Subject: Re: [RFC PATCH 1/2] swiotlb: Split up single swiotlb lock Message-ID: References: <20220428141429.1637028-1-ltykernel@gmail.com> <20220428141429.1637028-2-ltykernel@gmail.com> <1517d2f0-08d6-a532-7810-2161b2dff421@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1517d2f0-08d6-a532-7810-2161b2dff421@linux.intel.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Cc: parri.andrea@gmail.com, michael.h.kelley@microsoft.com, wei.liu@kernel.org, Tianyu Lan , thomas.lendacky@amd.com, konrad.wilk@oracle.com, linux-hyperv@vger.kernel.org, Tianyu Lan , linux-kernel@vger.kernel.org, Christoph Hellwig , iommu@lists.linux-foundation.org, kirill.shutemov@intel.com, andi.kleen@intel.com, brijesh.singh@amd.com, vkuznets@redhat.com, kys@microsoft.com, Robin Murphy , hch@lst.de 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 Thu, Apr 28, 2022 at 07:55:39AM -0700, Andi Kleen wrote: > At least for TDX need parallelism with a single device for performance. So find a way to make it happen without exposing details to random drivers. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu