From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 055A41F9A99 for ; Wed, 27 Nov 2024 12:13:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732709585; cv=none; b=eD6n3kVhNB3CJES7OIu9bxOOEU4BXsKwB+D4P3jVn1a6IEgrjdVAYyvArM7rzM/7wXbssC6TSuetJ+s5Ssy2GzBCEdQ73zXqLsC5dkO8G97cEST1BXkRZM6rm7tpfFkUGkamQqkJMJeYiqzS8AwihVutEzUDLG1ZOMCxjxqnE+g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732709585; c=relaxed/simple; bh=vBno7GuEDCM1/4IOivOOT2Cliqy5K1vujVJ/+0Z6i0Q=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=glQK/EDHEd2BuH8BjRg+Dzb6otXXSZFcvsLI4+8n30UtyTg/TUUek8199rshOvC4p+teT1SqedGm5XCDO+3ReI7IYwddi3uqnEB6UEjACKYOXAu0U4g8GWN6nMF0aghpqKR+d1vA70JO/3okfJcQgUD8ruIyxfFS3er41ffZ/lw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0A7651477; Wed, 27 Nov 2024 04:13:24 -0800 (PST) Received: from [10.1.196.40] (e121345-lin.cambridge.arm.com [10.1.196.40]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 379343F66E; Wed, 27 Nov 2024 04:12:53 -0800 (PST) Message-ID: Date: Wed, 27 Nov 2024 12:12:51 +0000 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: =?UTF-8?B?UmU6IOetlOWkjTogW+WklumDqOmCruS7tl0gUmU6IFtQQVRDSF0gaW9t?= =?UTF-8?Q?mu=3A_Downgrade_print_level_for_iommu_group_information?= To: "Li,Rongqing" , "joro@8bytes.org" , "will@kernel.org" , "iommu@lists.linux.dev" References: <20241126072339.25714-1-lirongqing@baidu.com> <84cb9155-4793-45f9-bb67-6926e103dc84@arm.com> From: Robin Murphy Content-Language: en-GB In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 26/11/2024 12:09 pm, Li,Rongqing wrote: > >> On 26/11/2024 7:23 am, Li RongQing wrote: >>> This per device log is becoming longer with more and more PCI devices >>> in system, which slows down the boot process due to the serializing >>> nature of printk(). >>> >>> Downgrade dev_info() to dev_dbg() so it is still accessible for debug >>> purposes. >> >> Previously discussed 4 and a half years ago: >> >> https://lore.kernel.org/linux-iommu/20200302154426.GC6540@8bytes.org/ >> >> Also, given that the iommu_probe_device() path is inherently serialised anyway, >> if logging a message from there significantly slows down your boot process, how >> slow is your console device? >> > > > There are 482 in my machine, spends nearly about 3 seconds OK, but how much of that is actually spent in printk? And given that those timings imply the machine is probably taking a minute or more to boot to a point of being useful, how much does 3 seconds really matter? My test box is smaller and simpler, so already boots over 10x faster than that: root@crazy-taxi:~# dmesg | grep 'init process' [ 4.379612] Run /init as init process yet with one simple trick I can easily turn that into 100x faster: root@crazy-taxi:~# dmesg | grep 'init process' [ 0.477168] Run /init as init process That's the exact same kernel, merely rebooted with "loglevel=1". Putting 732 lines into the log buffer is not slow in itself. What adds 4 seconds overall is echoing said log buffer to a 115200bps serial console. If you really care about boot time on your machine, the solution is not to take away useful information from everyone, it's to configure *your machine* to not bottleneck itself on emitting to a slow console device in the first place. Thanks, Robin. > [ 40.083614] DMAR: dmar1: Using Queued invalidation > [ 40.089008] DMAR: dmar0: Using Queued invalidation > [ 40.094402] DMAR: dmar19: Using Queued invalidation > [ 40.100816] pci 0000:79:00.4: Adding to iommu group 0 > [ 40.106586] pci 0000:79:01.0: Adding to iommu group 1 > [ 40.112346] pci 0000:79:02.0: Adding to iommu group 2 > [ 40.118315] pci 0000:74:00.4: Adding to iommu group 3 > [ 40.124074] pci 0000:74:01.0: Adding to iommu group 4 > [ 40.129830] pci 0000:74:02.0: Adding to iommu group 5 > [ 40.135788] pci 0000:6f:00.4: Adding to iommu group 6 > [ 40.141550] pci 0000:6f:01.0: Adding to iommu group 7 > [ 40.147313] pci 0000:6f:02.0: Adding to iommu group 8 > [ 40.153268] pci 0000:6a:00.4: Adding to iommu group 9 > [ 40.159037] pci 0000:6a:01.0: Adding to iommu group 10 > [ 40.164898] pci 0000:6a:02.0: Adding to iommu group 11 > [ 40.170956] pci 0000:57:00.4: Adding to iommu group 12 > [ 40.176797] pci 0000:57:01.0: Adding to iommu group 13 > [ 40.180021] Freeing initrd memory: 21192K > [ 40.182633] pci 0000:58:00.0: Adding to iommu group 14 > [ 40.192922] pci 0000:59:00.0: Adding to iommu group 15 > [ 40.198758] pci 0000:59:01.0: Adding to iommu group 16 > [ 40.204592] pci 0000:59:02.0: Adding to iommu group 17 > [ 40.210432] pci 0000:59:1f.0: Adding to iommu group 18 > [ 40.216277] pci 0000:5a:00.0: Adding to iommu group 19 > [ 40.222121] pci 0000:5b:00.0: Adding to iommu group 20 > [ 40.227968] pci 0000:5c:00.0: Adding to iommu group 21 > [ 40.233813] pci 0000:5d:00.0: Adding to iommu group 22 > [ 40.239873] pci 0000:44:00.4: Adding to iommu group 23 > [ 40.245711] pci 0000:44:01.0: Adding to iommu group 24 > [ 40.251548] pci 0000:45:00.0: Adding to iommu group 25 > [ 40.257385] pci 0000:46:00.0: Adding to iommu group 26 > [ 40.263221] pci 0000:46:01.0: Adding to iommu group 27 > [ 40.269058] pci 0000:46:02.0: Adding to iommu group 28 > [ 40.274901] pci 0000:47:00.0: Adding to iommu group 29 > [ 40.280733] pci 0000:48:00.0: Adding to iommu group 30 > [ 40.286591] pci 0000:49:00.0: Adding to iommu group 31 > [ 40.292657] pci 0000:31:00.4: Adding to iommu group 32 > [ 40.298493] pci 0000:31:01.0: Adding to iommu group 33 > [ 40.304337] pci 0000:32:00.0: Adding to iommu group 34 > [ 40.310174] pci 0000:33:00.0: Adding to iommu group 35 > [ 40.316011] pci 0000:33:01.0: Adding to iommu group 36 > [ 40.321850] pci 0000:33:02.0: Adding to iommu group 37 > [ 40.327697] pci 0000:34:00.0: Adding to iommu group 38 > [ 40.333544] pci 0000:35:00.0: Adding to iommu group 39 > [ 40.339390] pci 0000:36:00.0: Adding to iommu group 40 > [ 40.345451] pci 0000:1e:00.4: Adding to iommu group 41 > [ 40.351283] pci 0000:1e:01.0: Adding to iommu group 42 > [ 40.357122] pci 0000:1f:00.0: Adding to iommu group 43 > [ 40.362976] pci 0000:20:00.0: Adding to iommu group 44 > [ 40.368807] pci 0000:20:01.0: Adding to iommu group 45 > [ 40.374645] pci 0000:20:02.0: Adding to iommu group 46 > [ 40.380487] pci 0000:20:1f.0: Adding to iommu group 47 > [ 40.386340] pci 0000:21:00.0: Adding to iommu group 48 > [ 40.392185] pci 0000:22:00.0: Adding to iommu group 49 > [ 40.398042] pci 0000:23:00.0: Adding to iommu group 50 > [ 40.403889] pci 0000:24:00.0: Adding to iommu group 51 > [ 40.409956] pci 0000:0b:00.4: Adding to iommu group 52 > [ 40.415795] pci 0000:0b:01.0: Adding to iommu group 53 > [ 40.421662] pci 0000:0c:00.0: Adding to iommu group 54 > [ 40.427516] pci 0000:0c:00.1: Adding to iommu group 55 > [ 40.433664] pci 0000:f6:00.4: Adding to iommu group 56 > [ 40.439540] pci 0000:f6:01.0: Adding to iommu group 57 > [ 40.445414] pci 0000:f6:02.0: Adding to iommu group 58 > [ 40.451486] pci 0000:f1:00.4: Adding to iommu group 59 > [ 40.457360] pci 0000:f1:01.0: Adding to iommu group 60 > [ 40.463236] pci 0000:f1:02.0: Adding to iommu group 61 > [ 40.469295] pci 0000:ec:00.4: Adding to iommu group 62 > [ 40.475174] pci 0000:ec:01.0: Adding to iommu group 63 > [ 40.481049] pci 0000:ec:02.0: Adding to iommu group 64 > [ 40.487103] pci 0000:e7:00.4: Adding to iommu group 65 > [ 40.492974] pci 0000:e7:01.0: Adding to iommu group 66 > [ 40.498847] pci 0000:e7:02.0: Adding to iommu group 67 > [ 40.504904] pci 0000:80:00.4: Adding to iommu group 68 > [ 40.510940] pci 0000:d3:00.4: Adding to iommu group 69 > [ 40.516777] pci 0000:d3:01.0: Adding to iommu group 70 > [ 40.522612] pci 0000:d4:00.0: Adding to iommu group 71 > [ 40.528451] pci 0000:d5:00.0: Adding to iommu group 72 > [ 40.534289] pci 0000:d5:01.0: Adding to iommu group 73 > [ 40.540127] pci 0000:d5:02.0: Adding to iommu group 74 > [ 40.545966] pci 0000:d5:1f.0: Adding to iommu group 75 > [ 40.551819] pci 0000:d6:00.0: Adding to iommu group 76 > [ 40.557671] pci 0000:d7:00.0: Adding to iommu group 77 > [ 40.563521] pci 0000:d8:00.0: Adding to iommu group 78 > [ 40.569374] pci 0000:d9:00.0: Adding to iommu group 79 > [ 40.575448] pci 0000:bf:00.4: Adding to iommu group 80 > [ 40.581286] pci 0000:bf:01.0: Adding to iommu group 81 > [ 40.587138] pci 0000:c0:00.0: Adding to iommu group 82 > [ 40.592976] pci 0000:c1:00.0: Adding to iommu group 83 > [ 40.598813] pci 0000:c1:01.0: Adding to iommu group 84 > [ 40.604648] pci 0000:c1:02.0: Adding to iommu group 85 > [ 40.610498] pci 0000:c2:00.0: Adding to iommu group 86 > [ 40.616351] pci 0000:c3:00.0: Adding to iommu group 87 > [ 40.622213] pci 0000:c4:00.0: Adding to iommu group 88 > [ 40.628279] pci 0000:ab:00.4: Adding to iommu group 89 > [ 40.634118] pci 0000:ab:01.0: Adding to iommu group 90 > [ 40.639963] pci 0000:ac:00.0: Adding to iommu group 91 > [ 40.645803] pci 0000:ad:00.0: Adding to iommu group 92 > [ 40.651640] pci 0000:ad:01.0: Adding to iommu group 93 > [ 40.657480] pci 0000:ad:02.0: Adding to iommu group 94 > [ 40.663334] pci 0000:ae:00.0: Adding to iommu group 95 > [ 40.669186] pci 0000:af:00.0: Adding to iommu group 96 > [ 40.675038] pci 0000:b0:00.0: Adding to iommu group 97 > [ 40.681124] pci 0000:97:00.4: Adding to iommu group 98 > [ 40.686964] pci 0000:97:01.0: Adding to iommu group 99 > [ 40.692803] pci 0000:98:00.0: Adding to iommu group 100 > [ 40.698743] pci 0000:99:00.0: Adding to iommu group 101 > [ 40.704680] pci 0000:99:01.0: Adding to iommu group 102 > [ 40.710618] pci 0000:99:02.0: Adding to iommu group 103 > [ 40.716560] pci 0000:99:1f.0: Adding to iommu group 104 > [ 40.722512] pci 0000:9a:00.0: Adding to iommu group 105 > [ 40.728454] pci 0000:9b:00.0: Adding to iommu group 106 > [ 40.734413] pci 0000:9c:00.0: Adding to iommu group 107 > [ 40.740360] pci 0000:9d:00.0: Adding to iommu group 108 > [ 40.746537] pci 0000:83:00.4: Adding to iommu group 109 > [ 40.752557] pci 0000:00:00.0: Adding to iommu group 110 > [ 40.758491] pci 0000:00:00.1: Adding to iommu group 111 > [ 40.764431] pci 0000:00:00.2: Adding to iommu group 112 > [ 40.770418] pci 0000:00:00.4: Adding to iommu group 113 > [ 40.776353] pci 0000:00:10.0: Adding to iommu group 114 > [ 40.782285] pci 0000:00:13.0: Adding to iommu group 115 > [ 40.788322] pci 0000:00:14.0: Adding to iommu group 116 > [ 40.794261] pci 0000:00:14.2: Adding to iommu group 116 > [ 40.800201] pci 0000:00:14.4: Adding to iommu group 117 > [ 40.806137] pci 0000:00:15.0: Adding to iommu group 118 > [ 40.812219] pci 0000:00:16.0: Adding to iommu group 119 > [ 40.818155] pci 0000:00:16.1: Adding to iommu group 119 > [ 40.824091] pci 0000:00:16.4: Adding to iommu group 119 > [ 40.830024] pci 0000:00:17.0: Adding to iommu group 120 > [ 40.835959] pci 0000:00:18.0: Adding to iommu group 121 > [ 40.841894] pci 0000:00:19.0: Adding to iommu group 122 > [ 40.847975] pci 0000:00:1f.0: Adding to iommu group 123 > [ 40.853950] pci 0000:00:1f.4: Adding to iommu group 123 > [ 40.859884] pci 0000:00:1f.5: Adding to iommu group 123 > [ 40.865770] pci 0000:01:00.0: Adding to iommu group 114 > [ 40.871658] pci 0000:01:00.1: Adding to iommu group 114 > [ 40.877600] pci 0000:02:00.0: Adding to iommu group 114 > [ 40.883531] pci 0000:02:01.0: Adding to iommu group 114 > [ 40.889484] pci 0000:02:02.0: Adding to iommu group 114 > [ 40.895397] pci 0000:02:03.0: Adding to iommu group 114 > [ 40.901371] pci 0000:03:00.0: Adding to iommu group 114 > [ 40.907346] pci 0000:04:00.0: Adding to iommu group 114 > [ 40.913320] pci 0000:05:00.0: Adding to iommu group 114 > [ 40.919295] pci 0000:06:00.0: Adding to iommu group 114 > [ 40.925165] pci 0000:07:00.0: Adding to iommu group 115 > [ 40.931047] pci 0000:08:00.0: Adding to iommu group 115 > [ 40.936985] pci 0000:0b:00.0: Adding to iommu group 124 > [ 40.942923] pci 0000:0b:00.1: Adding to iommu group 125 > [ 40.948860] pci 0000:0b:00.2: Adding to iommu group 126 > [ 40.954796] pci 0000:1e:00.0: Adding to iommu group 127 > [ 40.960732] pci 0000:1e:00.1: Adding to iommu group 128 > [ 40.966672] pci 0000:1e:00.2: Adding to iommu group 129 > [ 40.972609] pci 0000:31:00.0: Adding to iommu group 130 > [ 40.978551] pci 0000:31:00.1: Adding to iommu group 131 > [ 40.984487] pci 0000:31:00.2: Adding to iommu group 132 > [ 40.990426] pci 0000:44:00.0: Adding to iommu group 133 > [ 40.996364] pci 0000:44:00.1: Adding to iommu group 134 > [ 41.002299] pci 0000:44:00.2: Adding to iommu group 135 > [ 41.008239] pci 0000:57:00.0: Adding to iommu group 136 > [ 41.014177] pci 0000:57:00.1: Adding to iommu group 137 > [ 41.020114] pci 0000:57:00.2: Adding to iommu group 138 > [ 41.026055] pci 0000:6a:00.0: Adding to iommu group 139 > [ 41.031992] pci 0000:6a:00.1: Adding to iommu group 140 > [ 41.037927] pci 0000:6a:00.2: Adding to iommu group 141 > [ 41.043852] pci 0000:6a:03.0: Adding to iommu group 142 > [ 41.049778] pci 0000:6a:03.1: Adding to iommu group 143 > [ 41.055708] pci 0000:6f:00.0: Adding to iommu group 144 > [ 41.061643] pci 0000:6f:00.1: Adding to iommu group 145 > [ 41.067578] pci 0000:6f:00.2: Adding to iommu group 146 > [ 41.073522] pci 0000:74:00.0: Adding to iommu group 147 > [ 41.079451] pci 0000:74:00.1: Adding to iommu group 148 > [ 41.085387] pci 0000:74:00.2: Adding to iommu group 149 > [ 41.091321] pci 0000:79:00.0: Adding to iommu group 150 > [ 41.097247] pci 0000:79:00.1: Adding to iommu group 151 > [ 41.103184] pci 0000:79:00.2: Adding to iommu group 152 > [ 41.109119] pci 0000:7e:00.0: Adding to iommu group 153 > [ 41.115049] pci 0000:7e:00.1: Adding to iommu group 154 > [ 41.120989] pci 0000:7e:00.2: Adding to iommu group 155 > [ 41.126924] pci 0000:7e:00.3: Adding to iommu group 156 > [ 41.132851] pci 0000:7e:00.5: Adding to iommu group 157 > [ 41.138787] pci 0000:7e:01.0: Adding to iommu group 158 > [ 41.144723] pci 0000:7e:01.1: Adding to iommu group 159 > [ 41.150676] pci 0000:7e:01.2: Adding to iommu group 160 > [ 41.156612] pci 0000:7e:02.0: Adding to iommu group 161 > [ 41.162546] pci 0000:7e:02.1: Adding to iommu group 162 > [ 41.168481] pci 0000:7e:02.2: Adding to iommu group 163 > [ 41.174420] pci 0000:7e:03.0: Adding to iommu group 164 > [ 41.180357] pci 0000:7e:03.1: Adding to iommu group 165 > [ 41.186291] pci 0000:7e:03.2: Adding to iommu group 166 > [ 41.192228] pci 0000:7e:05.0: Adding to iommu group 167 > [ 41.198167] pci 0000:7e:05.1: Adding to iommu group 168 > [ 41.204104] pci 0000:7e:05.2: Adding to iommu group 169 > [ 41.210040] pci 0000:7e:06.0: Adding to iommu group 170 > [ 41.215981] pci 0000:7e:06.1: Adding to iommu group 171 > [ 41.221920] pci 0000:7e:06.2: Adding to iommu group 172 > [ 41.227856] pci 0000:7e:07.0: Adding to iommu group 173 > [ 41.233793] pci 0000:7e:07.1: Adding to iommu group 174 > [ 41.239729] pci 0000:7e:07.2: Adding to iommu group 175 > [ 41.245665] pci 0000:7e:08.0: Adding to iommu group 176 > [ 41.251606] pci 0000:7e:08.1: Adding to iommu group 177 > [ 41.257544] pci 0000:7e:08.2: Adding to iommu group 178 > [ 41.263487] pci 0000:7e:0c.0: Adding to iommu group 179 > [ 41.269413] pci 0000:7e:0d.0: Adding to iommu group 180 > [ 41.275352] pci 0000:7e:0e.0: Adding to iommu group 181 > [ 41.281287] pci 0000:7e:0f.0: Adding to iommu group 182 > [ 41.287220] pci 0000:7e:1a.0: Adding to iommu group 183 > [ 41.293154] pci 0000:7e:1b.0: Adding to iommu group 184 > [ 41.299092] pci 0000:7e:1c.0: Adding to iommu group 185 > [ 41.305026] pci 0000:7e:1d.0: Adding to iommu group 186 > [ 41.310968] pci 0000:7f:00.0: Adding to iommu group 187 > [ 41.316903] pci 0000:7f:00.1: Adding to iommu group 188 > [ 41.322843] pci 0000:7f:00.2: Adding to iommu group 189 > [ 41.328767] pci 0000:7f:00.3: Adding to iommu group 190 > [ 41.334695] pci 0000:7f:00.4: Adding to iommu group 191 > [ 41.340629] pci 0000:7f:00.5: Adding to iommu group 192 > [ 41.346564] pci 0000:7f:00.6: Adding to iommu group 193 > [ 41.352500] pci 0000:7f:00.7: Adding to iommu group 194 > [ 41.358443] pci 0000:7f:01.0: Adding to iommu group 195 > [ 41.364379] pci 0000:7f:01.1: Adding to iommu group 196 > [ 41.370314] pci 0000:7f:01.2: Adding to iommu group 197 > [ 41.376252] pci 0000:7f:01.3: Adding to iommu group 198 > [ 41.382187] pci 0000:7f:01.4: Adding to iommu group 199 > [ 41.388122] pci 0000:7f:01.5: Adding to iommu group 200 > [ 41.394048] pci 0000:7f:01.6: Adding to iommu group 201 > [ 41.399985] pci 0000:7f:01.7: Adding to iommu group 202 > [ 41.405926] pci 0000:7f:02.0: Adding to iommu group 203 > [ 41.411861] pci 0000:7f:02.1: Adding to iommu group 204 > [ 41.417798] pci 0000:7f:02.2: Adding to iommu group 205 > [ 41.423731] pci 0000:7f:02.3: Adding to iommu group 206 > [ 41.429669] pci 0000:7f:02.4: Adding to iommu group 207 > [ 41.435605] pci 0000:7f:02.5: Adding to iommu group 208 > [ 41.441542] pci 0000:7f:02.6: Adding to iommu group 209 > [ 41.447478] pci 0000:7f:02.7: Adding to iommu group 210 > [ 41.453417] pci 0000:7f:03.0: Adding to iommu group 211 > [ 41.459350] pci 0000:7f:03.1: Adding to iommu group 212 > [ 41.465289] pci 0000:7f:03.2: Adding to iommu group 213 > [ 41.471226] pci 0000:7f:03.3: Adding to iommu group 214 > [ 41.477160] pci 0000:7f:03.4: Adding to iommu group 215 > [ 41.483085] pci 0000:7f:03.5: Adding to iommu group 216 > [ 41.489021] pci 0000:7f:03.6: Adding to iommu group 217 > [ 41.494957] pci 0000:7f:03.7: Adding to iommu group 218 > [ 41.500900] pci 0000:7f:04.0: Adding to iommu group 219 > [ 41.506833] pci 0000:7f:04.1: Adding to iommu group 220 > [ 41.512768] pci 0000:7f:04.2: Adding to iommu group 221 > [ 41.518701] pci 0000:7f:04.3: Adding to iommu group 222 > [ 41.524634] pci 0000:7f:04.4: Adding to iommu group 223 > [ 41.530585] pci 0000:7f:04.5: Adding to iommu group 224 > [ 41.536522] pci 0000:7f:04.6: Adding to iommu group 225 > [ 41.542455] pci 0000:7f:04.7: Adding to iommu group 226 > [ 41.548395] pci 0000:7f:05.0: Adding to iommu group 227 > [ 41.554330] pci 0000:7f:05.1: Adding to iommu group 228 > [ 41.560259] pci 0000:7f:05.2: Adding to iommu group 229 > [ 41.566192] pci 0000:7f:05.3: Adding to iommu group 230 > [ 41.572129] pci 0000:7f:05.4: Adding to iommu group 231 > [ 41.578061] pci 0000:7f:05.5: Adding to iommu group 232 > [ 41.583999] pci 0000:7f:05.6: Adding to iommu group 233 > [ 41.589932] pci 0000:7f:05.7: Adding to iommu group 234 > [ 41.595876] pci 0000:7f:06.0: Adding to iommu group 235 > [ 41.601809] pci 0000:7f:06.1: Adding to iommu group 236 > [ 41.607746] pci 0000:7f:06.2: Adding to iommu group 237 > [ 41.613682] pci 0000:7f:06.3: Adding to iommu group 238 > [ 41.619615] pci 0000:7f:06.4: Adding to iommu group 239 > [ 41.625550] pci 0000:7f:06.5: Adding to iommu group 240 > [ 41.631481] pci 0000:7f:06.6: Adding to iommu group 241 > [ 41.637418] pci 0000:7f:06.7: Adding to iommu group 242 > [ 41.643359] pci 0000:7f:0a.0: Adding to iommu group 243 > [ 41.649294] pci 0000:7f:0a.1: Adding to iommu group 244 > [ 41.655233] pci 0000:7f:0a.2: Adding to iommu group 245 > [ 41.661169] pci 0000:7f:0a.3: Adding to iommu group 246 > [ 41.667103] pci 0000:7f:0a.4: Adding to iommu group 247 > [ 41.673028] pci 0000:7f:0a.5: Adding to iommu group 248 > [ 41.678964] pci 0000:7f:0a.6: Adding to iommu group 249 > [ 41.684897] pci 0000:7f:0a.7: Adding to iommu group 250 > [ 41.690837] pci 0000:7f:0b.0: Adding to iommu group 251 > [ 41.696772] pci 0000:7f:0b.1: Adding to iommu group 252 > [ 41.702709] pci 0000:7f:0b.2: Adding to iommu group 253 > [ 41.708641] pci 0000:7f:0b.3: Adding to iommu group 254 > [ 41.714576] pci 0000:7f:0b.4: Adding to iommu group 255 > [ 41.720501] pci 0000:7f:0b.5: Adding to iommu group 256 > [ 41.726442] pci 0000:7f:0b.6: Adding to iommu group 257 > [ 41.732375] pci 0000:7f:0b.7: Adding to iommu group 258 > [ 41.738313] pci 0000:7f:0c.0: Adding to iommu group 259 > [ 41.744250] pci 0000:7f:0c.1: Adding to iommu group 260 > [ 41.750185] pci 0000:7f:0c.2: Adding to iommu group 261 > [ 41.756119] pci 0000:7f:0c.3: Adding to iommu group 262 > [ 41.762046] pci 0000:7f:0c.4: Adding to iommu group 263 > [ 41.767980] pci 0000:7f:0c.5: Adding to iommu group 264 > [ 41.773912] pci 0000:7f:0c.6: Adding to iommu group 265 > [ 41.779848] pci 0000:7f:0c.7: Adding to iommu group 266 > [ 41.785789] pci 0000:7f:0d.0: Adding to iommu group 267 > [ 41.791725] pci 0000:7f:0d.1: Adding to iommu group 268 > [ 41.797658] pci 0000:7f:0d.2: Adding to iommu group 269 > [ 41.803591] pci 0000:7f:0d.3: Adding to iommu group 270 > [ 41.809525] pci 0000:7f:0d.4: Adding to iommu group 271 > [ 41.815454] pci 0000:7f:0d.5: Adding to iommu group 272 > [ 41.821394] pci 0000:7f:0d.6: Adding to iommu group 273 > [ 41.827328] pci 0000:7f:0d.7: Adding to iommu group 274 > [ 41.833270] pci 0000:7f:0e.0: Adding to iommu group 275 > [ 41.839205] pci 0000:7f:0e.1: Adding to iommu group 276 > [ 41.845142] pci 0000:7f:0e.2: Adding to iommu group 277 > [ 41.851080] pci 0000:7f:0e.3: Adding to iommu group 278 > [ 41.857017] pci 0000:7f:0e.4: Adding to iommu group 279 > [ 41.862952] pci 0000:7f:0e.5: Adding to iommu group 280 > [ 41.868889] pci 0000:7f:0e.6: Adding to iommu group 281 > [ 41.874861] pci 0000:7f:0e.7: Adding to iommu group 282 > [ 41.880805] pci 0000:7f:0f.0: Adding to iommu group 283 > [ 41.886741] pci 0000:7f:0f.1: Adding to iommu group 284 > [ 41.892675] pci 0000:7f:0f.2: Adding to iommu group 285 > [ 41.898610] pci 0000:7f:0f.3: Adding to iommu group 286 > [ 41.904536] pci 0000:7f:0f.4: Adding to iommu group 287 > [ 41.910489] pci 0000:7f:0f.5: Adding to iommu group 288 > [ 41.916422] pci 0000:7f:0f.6: Adding to iommu group 289 > [ 41.922358] pci 0000:7f:0f.7: Adding to iommu group 290 > [ 41.928301] pci 0000:7f:10.0: Adding to iommu group 291 > [ 41.934226] pci 0000:7f:10.1: Adding to iommu group 292 > [ 41.940159] pci 0000:7f:10.2: Adding to iommu group 293 > [ 41.946093] pci 0000:7f:10.3: Adding to iommu group 294 > [ 41.952027] pci 0000:7f:10.4: Adding to iommu group 295 > [ 41.957955] pci 0000:7f:10.5: Adding to iommu group 296 > [ 41.963890] pci 0000:7f:10.6: Adding to iommu group 297 > [ 41.969817] pci 0000:7f:10.7: Adding to iommu group 298 > [ 41.975761] pci 0000:7f:1d.0: Adding to iommu group 299 > [ 41.981698] pci 0000:7f:1d.1: Adding to iommu group 300 > [ 41.988022] pci 0000:7f:1e.0: Adding to iommu group 301 > [ 41.993981] pci 0000:7f:1e.1: Adding to iommu group 301 > [ 41.999939] pci 0000:7f:1e.2: Adding to iommu group 301 > [ 42.005898] pci 0000:7f:1e.3: Adding to iommu group 301 > [ 42.011856] pci 0000:7f:1e.4: Adding to iommu group 301 > [ 42.017817] pci 0000:7f:1e.5: Adding to iommu group 301 > [ 42.023779] pci 0000:7f:1e.6: Adding to iommu group 301 > [ 42.029736] pci 0000:7f:1e.7: Adding to iommu group 301 > [ 42.035672] pci 0000:83:00.0: Adding to iommu group 302 > [ 42.041610] pci 0000:83:00.1: Adding to iommu group 303 > [ 42.047556] pci 0000:83:00.2: Adding to iommu group 304 > [ 42.053493] pci 0000:97:00.0: Adding to iommu group 305 > [ 42.059434] pci 0000:97:00.1: Adding to iommu group 306 > [ 42.065367] pci 0000:97:00.2: Adding to iommu group 307 > [ 42.071309] pci 0000:ab:00.0: Adding to iommu group 308 > [ 42.077242] pci 0000:ab:00.1: Adding to iommu group 309 > [ 42.083175] pci 0000:ab:00.2: Adding to iommu group 310 > [ 42.089111] pci 0000:bf:00.0: Adding to iommu group 311 > [ 42.095053] pci 0000:bf:00.1: Adding to iommu group 312 > [ 42.100985] pci 0000:bf:00.2: Adding to iommu group 313 > [ 42.106922] pci 0000:d3:00.0: Adding to iommu group 314 > [ 42.112858] pci 0000:d3:00.1: Adding to iommu group 315 > [ 42.118794] pci 0000:d3:00.2: Adding to iommu group 316 > [ 42.124734] pci 0000:80:00.0: Adding to iommu group 317 > [ 42.130669] pci 0000:80:00.1: Adding to iommu group 318 > [ 42.136604] pci 0000:80:00.2: Adding to iommu group 319 > [ 42.142549] pci 0000:e7:00.0: Adding to iommu group 320 > [ 42.148486] pci 0000:e7:00.1: Adding to iommu group 321 > [ 42.154423] pci 0000:e7:00.2: Adding to iommu group 322 > [ 42.160362] pci 0000:e7:03.0: Adding to iommu group 323 > [ 42.166299] pci 0000:e7:03.1: Adding to iommu group 324 > [ 42.172236] pci 0000:ec:00.0: Adding to iommu group 325 > [ 42.178173] pci 0000:ec:00.1: Adding to iommu group 326 > [ 42.184107] pci 0000:ec:00.2: Adding to iommu group 327 > [ 42.190054] pci 0000:f1:00.0: Adding to iommu group 328 > [ 42.195990] pci 0000:f1:00.1: Adding to iommu group 329 > [ 42.201924] pci 0000:f1:00.2: Adding to iommu group 330 > [ 42.207859] pci 0000:f6:00.0: Adding to iommu group 331 > [ 42.213784] pci 0000:f6:00.1: Adding to iommu group 332 > [ 42.219722] pci 0000:f6:00.2: Adding to iommu group 333 > [ 42.225661] pci 0000:fe:00.0: Adding to iommu group 334 > [ 42.231596] pci 0000:fe:00.1: Adding to iommu group 335 > [ 42.237539] pci 0000:fe:00.2: Adding to iommu group 336 > [ 42.243478] pci 0000:fe:00.3: Adding to iommu group 337 > [ 42.249413] pci 0000:fe:00.5: Adding to iommu group 338 > [ 42.255350] pci 0000:fe:01.0: Adding to iommu group 339 > [ 42.261285] pci 0000:fe:01.1: Adding to iommu group 340 > [ 42.267222] pci 0000:fe:01.2: Adding to iommu group 341 > [ 42.273159] pci 0000:fe:02.0: Adding to iommu group 342 > [ 42.279096] pci 0000:fe:02.1: Adding to iommu group 343 > [ 42.285037] pci 0000:fe:02.2: Adding to iommu group 344 > [ 42.290970] pci 0000:fe:03.0: Adding to iommu group 345 > [ 42.296904] pci 0000:fe:03.1: Adding to iommu group 346 > [ 42.302838] pci 0000:fe:03.2: Adding to iommu group 347 > [ 42.308773] pci 0000:fe:05.0: Adding to iommu group 348 > [ 42.314707] pci 0000:fe:05.1: Adding to iommu group 349 > [ 42.320644] pci 0000:fe:05.2: Adding to iommu group 350 > [ 42.326578] pci 0000:fe:06.0: Adding to iommu group 351 > [ 42.332535] pci 0000:fe:06.1: Adding to iommu group 352 > [ 42.338472] pci 0000:fe:06.2: Adding to iommu group 353 > [ 42.344407] pci 0000:fe:07.0: Adding to iommu group 354 > [ 42.350332] pci 0000:fe:07.1: Adding to iommu group 355 > [ 42.356265] pci 0000:fe:07.2: Adding to iommu group 356 > [ 42.362200] pci 0000:fe:08.0: Adding to iommu group 357 > [ 42.368135] pci 0000:fe:08.1: Adding to iommu group 358 > [ 42.374071] pci 0000:fe:08.2: Adding to iommu group 359 > [ 42.380017] pci 0000:fe:0c.0: Adding to iommu group 360 > [ 42.385951] pci 0000:fe:0d.0: Adding to iommu group 361 > [ 42.391875] pci 0000:fe:0e.0: Adding to iommu group 362 > [ 42.397807] pci 0000:fe:0f.0: Adding to iommu group 363 > [ 42.403744] pci 0000:fe:1a.0: Adding to iommu group 364 > [ 42.409681] pci 0000:fe:1b.0: Adding to iommu group 365 > [ 42.415616] pci 0000:fe:1c.0: Adding to iommu group 366 > [ 42.421548] pci 0000:fe:1d.0: Adding to iommu group 367 > [ 42.427490] pci 0000:ff:00.0: Adding to iommu group 368 > [ 42.433428] pci 0000:ff:00.1: Adding to iommu group 369 > [ 42.439363] pci 0000:ff:00.2: Adding to iommu group 370 > [ 42.445290] pci 0000:ff:00.3: Adding to iommu group 371 > [ 42.451225] pci 0000:ff:00.4: Adding to iommu group 372 > [ 42.457162] pci 0000:ff:00.5: Adding to iommu group 373 > [ 42.463097] pci 0000:ff:00.6: Adding to iommu group 374 > [ 42.469030] pci 0000:ff:00.7: Adding to iommu group 375 > [ 42.474973] pci 0000:ff:01.0: Adding to iommu group 376 > [ 42.480909] pci 0000:ff:01.1: Adding to iommu group 377 > [ 42.486842] pci 0000:ff:01.2: Adding to iommu group 378 > [ 42.492778] pci 0000:ff:01.3: Adding to iommu group 379 > [ 42.498713] pci 0000:ff:01.4: Adding to iommu group 380 > [ 42.504648] pci 0000:ff:01.5: Adding to iommu group 381 > [ 42.510575] pci 0000:ff:01.6: Adding to iommu group 382 > [ 42.516510] pci 0000:ff:01.7: Adding to iommu group 383 > [ 42.522453] pci 0000:ff:02.0: Adding to iommu group 384 > [ 42.528389] pci 0000:ff:02.1: Adding to iommu group 385 > [ 42.534326] pci 0000:ff:02.2: Adding to iommu group 386 > [ 42.540259] pci 0000:ff:02.3: Adding to iommu group 387 > [ 42.546194] pci 0000:ff:02.4: Adding to iommu group 388 > [ 42.552129] pci 0000:ff:02.5: Adding to iommu group 389 > [ 42.558053] pci 0000:ff:02.6: Adding to iommu group 390 > [ 42.563986] pci 0000:ff:02.7: Adding to iommu group 391 > [ 42.569930] pci 0000:ff:03.0: Adding to iommu group 392 > [ 42.575870] pci 0000:ff:03.1: Adding to iommu group 393 > [ 42.581808] pci 0000:ff:03.2: Adding to iommu group 394 > [ 42.587743] pci 0000:ff:03.3: Adding to iommu group 395 > [ 42.593679] pci 0000:ff:03.4: Adding to iommu group 396 > [ 42.599613] pci 0000:ff:03.5: Adding to iommu group 397 > [ 42.605548] pci 0000:ff:03.6: Adding to iommu group 398 > [ 42.611473] pci 0000:ff:03.7: Adding to iommu group 399 > [ 42.617407] pci 0000:ff:04.0: Adding to iommu group 400 > [ 42.623343] pci 0000:ff:04.1: Adding to iommu group 401 > [ 42.629281] pci 0000:ff:04.2: Adding to iommu group 402 > [ 42.635214] pci 0000:ff:04.3: Adding to iommu group 403 > [ 42.641151] pci 0000:ff:04.4: Adding to iommu group 404 > [ 42.647084] pci 0000:ff:04.5: Adding to iommu group 405 > [ 42.653020] pci 0000:ff:04.6: Adding to iommu group 406 > [ 42.658954] pci 0000:ff:04.7: Adding to iommu group 407 > [ 42.664887] pci 0000:ff:05.0: Adding to iommu group 408 > [ 42.670821] pci 0000:ff:05.1: Adding to iommu group 409 > [ 42.676745] pci 0000:ff:05.2: Adding to iommu group 410 > [ 42.682682] pci 0000:ff:05.3: Adding to iommu group 411 > [ 42.688618] pci 0000:ff:05.4: Adding to iommu group 412 > [ 42.694554] pci 0000:ff:05.5: Adding to iommu group 413 > [ 42.700488] pci 0000:ff:05.6: Adding to iommu group 414 > [ 42.706421] pci 0000:ff:05.7: Adding to iommu group 415 > [ 42.712373] pci 0000:ff:06.0: Adding to iommu group 416 > [ 42.718308] pci 0000:ff:06.1: Adding to iommu group 417 > [ 42.724242] pci 0000:ff:06.2: Adding to iommu group 418 > [ 42.730175] pci 0000:ff:06.3: Adding to iommu group 419 > [ 42.736111] pci 0000:ff:06.4: Adding to iommu group 420 > [ 42.742046] pci 0000:ff:06.5: Adding to iommu group 421 > [ 42.747981] pci 0000:ff:06.6: Adding to iommu group 422 > [ 42.753915] pci 0000:ff:06.7: Adding to iommu group 423 > [ 42.759853] pci 0000:ff:0a.0: Adding to iommu group 424 > [ 42.765789] pci 0000:ff:0a.1: Adding to iommu group 425 > [ 42.771725] pci 0000:ff:0a.2: Adding to iommu group 426 > [ 42.777661] pci 0000:ff:0a.3: Adding to iommu group 427 > [ 42.783598] pci 0000:ff:0a.4: Adding to iommu group 428 > [ 42.789536] pci 0000:ff:0a.5: Adding to iommu group 429 > [ 42.795475] pci 0000:ff:0a.6: Adding to iommu group 430 > [ 42.801409] pci 0000:ff:0a.7: Adding to iommu group 431 > [ 42.807352] pci 0000:ff:0b.0: Adding to iommu group 432 > [ 42.813287] pci 0000:ff:0b.1: Adding to iommu group 433 > [ 42.819223] pci 0000:ff:0b.2: Adding to iommu group 434 > [ 42.825159] pci 0000:ff:0b.3: Adding to iommu group 435 > [ 42.831093] pci 0000:ff:0b.4: Adding to iommu group 436 > [ 42.837067] pci 0000:ff:0b.5: Adding to iommu group 437 > [ 42.843002] pci 0000:ff:0b.6: Adding to iommu group 438 > [ 42.848928] pci 0000:ff:0b.7: Adding to iommu group 439 > [ 42.854868] pci 0000:ff:0c.0: Adding to iommu group 440 > [ 42.860803] pci 0000:ff:0c.1: Adding to iommu group 441 > [ 42.866739] pci 0000:ff:0c.2: Adding to iommu group 442 > [ 42.872674] pci 0000:ff:0c.3: Adding to iommu group 443 > [ 42.878611] pci 0000:ff:0c.4: Adding to iommu group 444 > [ 42.884549] pci 0000:ff:0c.5: Adding to iommu group 445 > [ 42.890487] pci 0000:ff:0c.6: Adding to iommu group 446 > [ 42.896423] pci 0000:ff:0c.7: Adding to iommu group 447 > [ 42.902363] pci 0000:ff:0d.0: Adding to iommu group 448 > [ 42.908299] pci 0000:ff:0d.1: Adding to iommu group 449 > [ 42.914235] pci 0000:ff:0d.2: Adding to iommu group 450 > [ 42.920174] pci 0000:ff:0d.3: Adding to iommu group 451 > [ 42.926109] pci 0000:ff:0d.4: Adding to iommu group 452 > [ 42.932047] pci 0000:ff:0d.5: Adding to iommu group 453 > [ 42.937983] pci 0000:ff:0d.6: Adding to iommu group 454 > [ 42.943919] pci 0000:ff:0d.7: Adding to iommu group 455 > [ 42.949862] pci 0000:ff:0e.0: Adding to iommu group 456 > [ 42.955796] pci 0000:ff:0e.1: Adding to iommu group 457 > [ 42.961721] pci 0000:ff:0e.2: Adding to iommu group 458 > [ 42.967658] pci 0000:ff:0e.3: Adding to iommu group 459 > [ 42.973593] pci 0000:ff:0e.4: Adding to iommu group 460 > [ 42.979532] pci 0000:ff:0e.5: Adding to iommu group 461 > [ 42.985470] pci 0000:ff:0e.6: Adding to iommu group 462 > [ 42.991405] pci 0000:ff:0e.7: Adding to iommu group 463 > [ 42.997351] pci 0000:ff:0f.0: Adding to iommu group 464 > [ 43.003290] pci 0000:ff:0f.1: Adding to iommu group 465 > [ 43.009228] pci 0000:ff:0f.2: Adding to iommu group 466 > [ 43.015163] pci 0000:ff:0f.3: Adding to iommu group 467 > [ 43.021100] pci 0000:ff:0f.4: Adding to iommu group 468 > [ 43.027036] pci 0000:ff:0f.5: Adding to iommu group 469 > [ 43.032976] pci 0000:ff:0f.6: Adding to iommu group 470 > [ 43.038912] pci 0000:ff:0f.7: Adding to iommu group 471 > [ 43.044854] pci 0000:ff:10.0: Adding to iommu group 472 > [ 43.050792] pci 0000:ff:10.1: Adding to iommu group 473 > [ 43.056731] pci 0000:ff:10.2: Adding to iommu group 474 > [ 43.062668] pci 0000:ff:10.3: Adding to iommu group 475 > [ 43.068608] pci 0000:ff:10.4: Adding to iommu group 476 > [ 43.074542] pci 0000:ff:10.5: Adding to iommu group 477 > [ 43.080471] pci 0000:ff:10.6: Adding to iommu group 478 > [ 43.086408] pci 0000:ff:10.7: Adding to iommu group 479 > [ 43.092362] pci 0000:ff:1d.0: Adding to iommu group 480 > [ 43.098302] pci 0000:ff:1d.1: Adding to iommu group 481 > [ 43.104636] pci 0000:ff:1e.0: Adding to iommu group 482 > [ 43.110621] pci 0000:ff:1e.1: Adding to iommu group 482 > [ 43.116605] pci 0000:ff:1e.2: Adding to iommu group 482 > [ 43.122590] pci 0000:ff:1e.3: Adding to iommu group 482 > [ 43.128574] pci 0000:ff:1e.4: Adding to iommu group 482 > [ 43.134556] pci 0000:ff:1e.5: Adding to iommu group 482 > [ 43.140538] pci 0000:ff:1e.6: Adding to iommu group 482 > [ 43.146522] pci 0000:ff:1e.7: Adding to iommu group 482 > [ 43.153222] DMAR: Intel(R) Virtualization Technology for Directed I/O > [ 43.160471] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) > [ 43.167715] software IO TLB: mapped [mem 0x000000006123e000-0x000000006523e000] (64MB) > [ 43.178633] RAPL PMU: API unit is 2^-32 Joules, 3 fixed counters, 655360 ms ovfl timer > [ 43.187540] RAPL PMU: hw unit of domain package 2^-14 Joules > [ 43.193906] RAPL PMU: hw unit of domain dram 2^-14 Joules > [ 43.199984] RAPL PMU: hw unit of domain psys 2^-0 Joules > > > Thanks > > -Li > >> Thanks, >> Robin. >> >>> Signed-off-by: Li RongQing >>> --- >>> drivers/iommu/iommu.c | 2 +- >>> 1 file changed, 1 insertion(+), 1 deletion(-) >>> >>> diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index >>> 83c8e61..a16f944 100644 >>> --- a/drivers/iommu/iommu.c >>> +++ b/drivers/iommu/iommu.c >>> @@ -1193,7 +1193,7 @@ static struct group_device >>> *iommu_group_alloc_device(struct iommu_group *group, >>> >>> trace_add_device_to_group(group->id, dev); >>> >>> - dev_info(dev, "Adding to iommu group %d\n", group->id); >>> + dev_dbg(dev, "Adding to iommu group %d\n", group->id); >>> >>> return device; >>>