Received: by 2002:a25:31c3:0:0:0:0:0 with SMTP id x186csp519749ybx; Wed, 6 Nov 2019 22:05:05 -0800 (PST) X-Google-Smtp-Source: APXvYqwdd7i9fu8d1B3v4hDDuzEhGuaDRIfz40rR/X1ZpP6JzR4VIy7Hc9ZXk2nuKKTegZ7VCNsT X-Received: by 2002:a50:84e9:: with SMTP id 96mr1711746edq.182.1573106705681; Wed, 06 Nov 2019 22:05:05 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1573106705; cv=none; d=google.com; s=arc-20160816; b=fKfs4P2TnYOeTmnljLIAc75234TEsMT4TUUHR70/jXccc0WeMtt3EsL8L9kJDyHFs7 rwsdqOm3ACDhHMp15zswH7nzbhmqnrEJrSscQ06pIFuSCacm9x5q/Odud3ulG02hjNVz 1iBfOQza/ZJrRyXvR/UOKXIRvk+oaUr3unftF8Pyp7Iqd2ivKu96qhs8/qAFKz8aUm26 AVvij91TUXKJXMQo8rRyZwadkzYDUjbzkYknKL75QUnpgK9fvmOae4i5QE4tiXd4qTyl /ZvXlnBTClK4jKzhDZXES2s4JJnEcIjFCMxSWrk3fYU6VztyODDLA4ijiPG3KdC9hIm5 wKeg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:autocrypt:from:references:cc:to:subject:dkim-signature; bh=e00d5YBmHccKDNwDC/ZSC9s25lwYabyM9BiQUjCXOhw=; b=ydXP6frk0HfdFQbdYBJPltE1nfNvEYwxXUzZGcpKZXHCrfDSH1JOv6UNPFHM2sYMPN 0ESDHXLo68aUtJ1+cO0VrfSDoIW7tMF6YrKH46Ttowl/aKpg671s8meBUh2aBp9gfuv3 OC5fCUBptk1JZdrfZLtjYvPebyUdto7xhpGG0Odo5M9R8kCu1HSWTANPwLv5H/8XAbSL /hd3v0IGc0uI2aN+KxNHy5Kzb9fHDKofiLtP3Jki7QGcXNe25mCgaAzGeAZfeRbfrrgM 29TEWGJbktO51gygX9kZl+GSd46YewcZhWmkbGDroTKT574gwjhjYC4CV3ZGSor+W+ao 3YMg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ozlabs-ru.20150623.gappssmtp.com header.s=20150623 header.b=nnELPvHb; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id oz10si731404ejb.163.2019.11.06.22.04.41; Wed, 06 Nov 2019 22:05:05 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ozlabs-ru.20150623.gappssmtp.com header.s=20150623 header.b=nnELPvHb; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726897AbfKGGBd (ORCPT + 99 others); Thu, 7 Nov 2019 01:01:33 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:35415 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725763AbfKGGBc (ORCPT ); Thu, 7 Nov 2019 01:01:32 -0500 Received: by mail-pf1-f195.google.com with SMTP id d13so1685137pfq.2 for ; Wed, 06 Nov 2019 22:01:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ozlabs-ru.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:autocrypt:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=e00d5YBmHccKDNwDC/ZSC9s25lwYabyM9BiQUjCXOhw=; b=nnELPvHbtwYJRa+fArupGTgIpR4z/Ph7VSpfIJTTVmMFC9dCABmvCeqnb+b3W5NZ0g 9muoOzc1QrjLMMKpKKO3G1b9Zwu3fuADrSCJWyEgVYg8bHM23EuTxgVV12r6txnnzvpz BLjWGzpSg+sleEGE6biXa+Ksob1nmVBtCywNrJUD9l7SeKzoiTSskAVZz8svTv/I4Kjk g/SrP6UfPStX/ZlssnQoyynevXIxZxPc9vGQ1YcM9jdploHIgvFnCKr/Krn1s5EwtI/z lwdpXGf1qL48xKemsxypWhwrlK9PthaCw2ep5q1QTENZbZ2lFrFHC0ebb069rCUSD4W/ TZqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=e00d5YBmHccKDNwDC/ZSC9s25lwYabyM9BiQUjCXOhw=; b=IQ2YWygu+R7pekd6X2bMWCmYYAutAFLeG0EUY8B6mrbmMTuHH8S8ot6k2n5ZyL1R/q BY3Ft0V7JTHOxO1F+wjJa1IPLUSKbxoI/ZvyEh9wXNFJKhL/6SMQCY0kEhxSbAC+CR5N lCy6pp9sPPxFeSMyigNJt8aS2pC33FBe2r8x5SjmFXw1FRUZQjHUvLkxpJQAuInDvqYC +YkG3x2xoo5bRxXBnEsCQXvEvsKsKU0SwF107BSRaKp/Pc3DeofX80aLD0JfXZWv0efd P2gX4ohcEz/5+KMHfxs11Ym0PoTrbQJ9W1QWrOe1lssdBZhRKinHy+EaNkPtuLoTpIGK Fk6g== X-Gm-Message-State: APjAAAUljNoK+arw054ZZP2uGNAhzPpycb+e9+rKCj232eQvFCM6GLRf Pa/QCPu8senKIVnMQprlhMj19OrP+fo= X-Received: by 2002:a63:ce51:: with SMTP id r17mr2301059pgi.16.1573106489073; Wed, 06 Nov 2019 22:01:29 -0800 (PST) Received: from [10.61.2.175] ([122.99.82.10]) by smtp.gmail.com with ESMTPSA id j7sm925149pgl.38.2019.11.06.22.01.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 06 Nov 2019 22:01:28 -0800 (PST) Subject: Re: [RFC v1 0/2] Enable IOMMU support for pseries Secure VMs To: "Michael S. Tsirkin" Cc: Ram Pai , linuxppc-dev@lists.ozlabs.org, benh@kernel.crashing.org, david@gibson.dropbear.id.au, mpe@ellerman.id.au, paulus@ozlabs.org, mdroth@linux.vnet.ibm.com, hch@lst.de, andmike@us.ibm.com, sukadev@linux.vnet.ibm.com, ram.n.pai@gmail.com, cai@lca.pw, tglx@linutronix.de, bauerman@linux.ibm.com, linux-kernel@vger.kernel.org References: <1572902923-8096-1-git-send-email-linuxram@us.ibm.com> <265679db-9cb3-1660-0cf6-97f740b1b48b@ozlabs.ru> <20191106130558-mutt-send-email-mst@kernel.org> From: Alexey Kardashevskiy Autocrypt: addr=aik@ozlabs.ru; keydata= mQINBE+rT0sBEADFEI2UtPRsLLvnRf+tI9nA8T91+jDK3NLkqV+2DKHkTGPP5qzDZpRSH6mD EePO1JqpVuIow/wGud9xaPA5uvuVgRS1q7RU8otD+7VLDFzPRiRE4Jfr2CW89Ox6BF+q5ZPV /pS4v4G9eOrw1v09lEKHB9WtiBVhhxKK1LnUjPEH3ifkOkgW7jFfoYgTdtB3XaXVgYnNPDFo PTBYsJy+wr89XfyHr2Ev7BB3Xaf7qICXdBF8MEVY8t/UFsesg4wFWOuzCfqxFmKEaPDZlTuR tfLAeVpslNfWCi5ybPlowLx6KJqOsI9R2a9o4qRXWGP7IwiMRAC3iiPyk9cknt8ee6EUIxI6 t847eFaVKI/6WcxhszI0R6Cj+N4y+1rHfkGWYWupCiHwj9DjILW9iEAncVgQmkNPpUsZECLT WQzMuVSxjuXW4nJ6f4OFHqL2dU//qR+BM/eJ0TT3OnfLcPqfucGxubhT7n/CXUxEy+mvWwnm s9p4uqVpTfEuzQ0/bE6t7dZdPBua7eYox1AQnk8JQDwC3Rn9kZq2O7u5KuJP5MfludMmQevm pHYEMF4vZuIpWcOrrSctJfIIEyhDoDmR34bCXAZfNJ4p4H6TPqPh671uMQV82CfTxTrMhGFq 8WYU2AH86FrVQfWoH09z1WqhlOm/KZhAV5FndwVjQJs1MRXD8QARAQABtCRBbGV4ZXkgS2Fy ZGFzaGV2c2tpeSA8YWlrQG96bGFicy5ydT6JAjgEEwECACIFAk+rT0sCGwMGCwkIBwMCBhUI AgkKCwQWAgMBAh4BAheAAAoJEIYTPdgrwSC5fAIP/0wf/oSYaCq9PhO0UP9zLSEz66SSZUf7 AM9O1rau1lJpT8RoNa0hXFXIVbqPPKPZgorQV8SVmYRLr0oSmPnTiZC82x2dJGOR8x4E01gK TanY53J/Z6+CpYykqcIpOlGsytUTBA+AFOpdaFxnJ9a8p2wA586fhCZHVpV7W6EtUPH1SFTQ q5xvBmr3KkWGjz1FSLH4FeB70zP6uyuf/B2KPmdlPkyuoafl2UrU8LBADi/efc53PZUAREih sm3ch4AxaL4QIWOmlE93S+9nHZSRo9jgGXB1LzAiMRII3/2Leg7O4hBHZ9Nki8/fbDo5///+ kD4L7UNbSUM/ACWHhd4m1zkzTbyRzvL8NAVQ3rckLOmju7Eu9whiPueGMi5sihy9VQKHmEOx OMEhxLRQbzj4ypRLS9a+oxk1BMMu9cd/TccNy0uwx2UUjDQw/cXw2rRWTRCxoKmUsQ+eNWEd iYLW6TCfl9CfHlT6A7Zmeqx2DCeFafqEd69DqR9A8W5rx6LQcl0iOlkNqJxxbbW3ddDsLU/Y r4cY20++WwOhSNghhtrroP+gouTOIrNE/tvG16jHs8nrYBZuc02nfX1/gd8eguNfVX/ZTHiR gHBWe40xBKwBEK2UeqSpeVTohYWGBkcd64naGtK9qHdo1zY1P55lHEc5Uhlk743PgAnOi27Q ns5zuQINBE+rT0sBEACnV6GBSm+25ACT+XAE0t6HHAwDy+UKfPNaQBNTTt31GIk5aXb2Kl/p AgwZhQFEjZwDbl9D/f2GtmUHWKcCmWsYd5M/6Ljnbp0Ti5/xi6FyfqnO+G/wD2VhGcKBId1X Em/B5y1kZVbzcGVjgD3HiRTqE63UPld45bgK2XVbi2+x8lFvzuFq56E3ZsJZ+WrXpArQXib2 hzNFwQleq/KLBDOqTT7H+NpjPFR09Qzfa7wIU6pMNF2uFg5ihb+KatxgRDHg70+BzQfa6PPA o1xioKXW1eHeRGMmULM0Eweuvpc7/STD3K7EJ5bBq8svoXKuRxoWRkAp9Ll65KTUXgfS+c0x gkzJAn8aTG0z/oEJCKPJ08CtYQ5j7AgWJBIqG+PpYrEkhjzSn+DZ5Yl8r+JnZ2cJlYsUHAB9 jwBnWmLCR3gfop65q84zLXRQKWkASRhBp4JK3IS2Zz7Nd/Sqsowwh8x+3/IUxVEIMaVoUaxk Wt8kx40h3VrnLTFRQwQChm/TBtXqVFIuv7/Mhvvcq11xnzKjm2FCnTvCh6T2wJw3de6kYjCO 7wsaQ2y3i1Gkad45S0hzag/AuhQJbieowKecuI7WSeV8AOFVHmgfhKti8t4Ff758Z0tw5Fpc BFDngh6Lty9yR/fKrbkkp6ux1gJ2QncwK1v5kFks82Cgj+DSXK6GUQARAQABiQIfBBgBAgAJ BQJPq09LAhsMAAoJEIYTPdgrwSC5NYEP/2DmcEa7K9A+BT2+G5GXaaiFa098DeDrnjmRvumJ BhA1UdZRdfqICBADmKHlJjj2xYo387sZpS6ABbhrFxM6s37g/pGPvFUFn49C47SqkoGcbeDz Ha7JHyYUC+Tz1dpB8EQDh5xHMXj7t59mRDgsZ2uVBKtXj2ZkbizSHlyoeCfs1gZKQgQE8Ffc F8eWKoqAQtn3j4nE3RXbxzTJJfExjFB53vy2wV48fUBdyoXKwE85fiPglQ8bU++0XdOr9oyy j1llZlB9t3tKVv401JAdX8EN0++ETiOovQdzE1m+6ioDCtKEx84ObZJM0yGSEGEanrWjiwsa nzeK0pJQM9EwoEYi8TBGhHC9ksaAAQipSH7F2OHSYIlYtd91QoiemgclZcSgrxKSJhyFhmLr QEiEILTKn/pqJfhHU/7R7UtlDAmFMUp7ByywB4JLcyD10lTmrEJ0iyRRTVfDrfVP82aMBXgF tKQaCxcmLCaEtrSrYGzd1sSPwJne9ssfq0SE/LM1J7VdCjm6OWV33SwKrfd6rOtvOzgadrG6 3bgUVBw+bsXhWDd8tvuCXmdY4bnUblxF2B6GOwSY43v6suugBttIyW5Bl2tXSTwP+zQisOJo +dpVG2pRr39h+buHB3NY83NEPXm1kUOhduJUA17XUY6QQCAaN4sdwPqHq938S3EmtVhsuQIN BFq54uIBEACtPWrRdrvqfwQF+KMieDAMGdWKGSYSfoEGGJ+iNR8v255IyCMkty+yaHafvzpl PFtBQ/D7Fjv+PoHdFq1BnNTk8u2ngfbre9wd9MvTDsyP/TmpF0wyyTXhhtYvE267Av4X/BQT lT9IXKyAf1fP4BGYdTNgQZmAjrRsVUW0j6gFDrN0rq2J9emkGIPvt9rQt6xGzrd6aXonbg5V j6Uac1F42ESOZkIh5cN6cgnGdqAQb8CgLK92Yc8eiCVCH3cGowtzQ2m6U32qf30cBWmzfSH0 HeYmTP9+5L8qSTA9s3z0228vlaY0cFGcXjdodBeVbhqQYseMF9FXiEyRs28uHAJEyvVZwI49 CnAgVV/n1eZa5qOBpBL+ZSURm8Ii0vgfvGSijPGbvc32UAeAmBWISm7QOmc6sWa1tobCiVmY SNzj5MCNk8z4cddoKIc7Wt197+X/X5JPUF5nQRvg3SEHvfjkS4uEst9GwQBpsbQYH9MYWq2P PdxZ+xQE6v7cNB/pGGyXqKjYCm6v70JOzJFmheuUq0Ljnfhfs15DmZaLCGSMC0Amr+rtefpA y9FO5KaARgdhVjP2svc1F9KmTUGinSfuFm3quadGcQbJw+lJNYIfM7PMS9fftq6vCUBoGu3L j4xlgA/uQl/LPneu9mcvit8JqcWGS3fO+YeagUOon1TRqQARAQABiQRsBBgBCAAgFiEEZSrP ibrORRTHQ99dhhM92CvBILkFAlq54uICGwICQAkQhhM92CvBILnBdCAEGQEIAB0WIQQIhvWx rCU+BGX+nH3N7sq0YorTbQUCWrni4gAKCRDN7sq0YorTbVVSD/9V1xkVFyUCZfWlRuryBRZm S4GVaNtiV2nfUfcThQBfF0sSW/aFkLP6y+35wlOGJE65Riw1C2Ca9WQYk0xKvcZrmuYkK3DZ 0M9/Ikkj5/2v0vxz5Z5w/9+IaCrnk7pTnHZuZqOh23NeVZGBls/IDIvvLEjpD5UYicH0wxv+ X6cl1RoP2Kiyvenf0cS73O22qSEw0Qb9SId8wh0+ClWet2E7hkjWFkQfgJ3hujR/JtwDT/8h 3oCZFR0KuMPHRDsCepaqb/k7VSGTLBjVDOmr6/C9FHSjq0WrVB9LGOkdnr/xcISDZcMIpbRm EkIQ91LkT/HYIImL33ynPB0SmA+1TyMgOMZ4bakFCEn1vxB8Ir8qx5O0lHMOiWMJAp/PAZB2 r4XSSHNlXUaWUg1w3SG2CQKMFX7vzA31ZeEiWO8tj/c2ZjQmYjTLlfDK04WpOy1vTeP45LG2 wwtMA1pKvQ9UdbYbovz92oyZXHq81+k5Fj/YA1y2PI4MdHO4QobzgREoPGDkn6QlbJUBf4To pEbIGgW5LRPLuFlOPWHmIS/sdXDrllPc29aX2P7zdD/ivHABslHmt7vN3QY+hG0xgsCO1JG5 pLORF2N5XpM95zxkZqvYfC5tS/qhKyMcn1kC0fcRySVVeR3tUkU8/caCqxOqeMe2B6yTiU1P aNDq25qYFLeYxg67D/4w/P6BvNxNxk8hx6oQ10TOlnmeWp1q0cuutccblU3ryRFLDJSngTEu ZgnOt5dUFuOZxmMkqXGPHP1iOb+YDznHmC0FYZFG2KAc9pO0WuO7uT70lL6larTQrEneTDxQ CMQLP3qAJ/2aBH6SzHIQ7sfbsxy/63jAiHiT3cOaxAKsWkoV2HQpnmPOJ9u02TPjYmdpeIfa X2tXyeBixa3i/6dWJ4nIp3vGQicQkut1YBwR7dJq67/FCV3Mlj94jI0myHT5PIrCS2S8LtWX ikTJSxWUKmh7OP5mrqhwNe0ezgGiWxxvyNwThOHc5JvpzJLd32VDFilbxgu4Hhnf6LcgZJ2c Zd44XWqUu7FzVOYaSgIvTP0hNrBYm/E6M7yrLbs3JY74fGzPWGRbBUHTZXQEqQnZglXaVB5V ZhSFtHopZnBSCUSNDbB+QGy4B/E++Bb02IBTGl/JxmOwG+kZUnymsPvTtnNIeTLHxN/H/ae0 c7E5M+/NpslPCmYnDjs5qg0/3ihh6XuOGggZQOqrYPC3PnsNs3NxirwOkVPQgO6mXxpuifvJ DG9EMkK8IBXnLulqVk54kf7fE0jT/d8RTtJIA92GzsgdK2rpT1MBKKVffjRFGwN7nQVOzi4T XrB5p+6ML7Bd84xOEGsj/vdaXmz1esuH7BOZAGEZfLRCHJ0GVCSssg== Message-ID: Date: Thu, 7 Nov 2019 17:01:22 +1100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.1 MIME-Version: 1.0 In-Reply-To: <20191106130558-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/11/2019 05:06, Michael S. Tsirkin wrote: > On Wed, Nov 06, 2019 at 12:59:50PM +1100, Alexey Kardashevskiy wrote: >> >> >> On 05/11/2019 08:28, Ram Pai wrote: >>> This patch series enables IOMMU support for pseries Secure VMs. >>> >>> >>> Tested using QEMU command line option: >>> >>> "-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4, >>> iommu_platform=on,disable-modern=off,disable-legacy=on" >>> and >>> >>> "-device virtio-blk-pci,scsi=off,bus=pci.0, >>> addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0, >>> iommu_platform=on,disable-modern=off,disable-legacy=on" >> >> >> Worth mentioning that SLOF won't boot with such devices as SLOF does not know about iommu_platform=on. > > Shouldn't be hard to support: set up the iommu to allow everything > and ack the feature. Right? With the defaults we have (32bit window limited by 1GB and SLOF residing close to the end of the second GB), it is not straight forward; also SLOF's XHCI and E1000 already use IOMMU so we should just do this for virtio as well, I am hacking it now. Thanks, > >>> >>> Ram Pai (2): >>> powerpc/pseries/iommu: Share the per-cpu TCE page with the hypervisor. >>> powerpc/pseries/iommu: Use dma_iommu_ops for Secure VMs aswell. >>> >>> arch/powerpc/platforms/pseries/iommu.c | 30 ++++++++++++++++++------------ >>> 1 file changed, 18 insertions(+), 12 deletions(-) >>> >> >> -- >> Alexey > -- Alexey