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=-4.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 01D56C433DB for ; Fri, 19 Mar 2021 09:57:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF7AD64F45 for ; Fri, 19 Mar 2021 09:57:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229524AbhCSJ4l (ORCPT ); Fri, 19 Mar 2021 05:56:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:39748 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229925AbhCSJ4g (ORCPT ); Fri, 19 Mar 2021 05:56:36 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id D830764F81 for ; Fri, 19 Mar 2021 09:56:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616147795; bh=WPLpAsxZDAZmlkMIgIPfYu0O9w9G5IYbaAmN/2zfbEQ=; h=From:To:Subject:Date:In-Reply-To:References:From; b=BP/KoDhxcs3WskLY/aBQUxVKIVKeSWkETCuNSppczvQYK6A15254N9W4CHqFKqCGw zRvkZnMkyHFzpS2CN0UvooviR42opxfywJ+2bV1szOh6vz+1/ovP08YGlG9faEOgE9 K24leYlWW/3KaEqMokWbVTBB4+jVImspfyfIzd4gdRRaoULAdfOuunpVZg6RjG925y 07uLcnfeUi9pqtXMgMyoVrQ1HwNCpZulO/WTFhgJz4ljIuZoWcNWAMn27a2KVXdaEA oVXNTWdCBP8Dmaz6L6iwRjsqP16EpdgKAm9y2bC3N2BT7c0kiw0n7QYi2SCM8Kt5dz 2TykMUyCov6MQ== From: bugzilla-daemon@bugzilla.kernel.org To: kvm@vger.kernel.org Subject: [Bug 201753] AMD-Vi: Unable to write to IOMMU perf counter Date: Fri, 19 Mar 2021 09:56:35 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Product: Virtualization X-Bugzilla-Component: kvm X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: info@felicetufo.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D201753 --- Comment #30 from Felice Tufo (info@felicetufo.com) --- Hello, a little update to my previous message: same machine, same kernel, b= ut this time the patch works. So it seems that also on the same HW the timings= are not so predictable... [ 1.844903] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters support= ed [ 1.845157] pci 0000:00:00.2: can't derive routing for PCI INT A [ 1.845160] pci 0000:00:00.2: PCI INT A: not connected [ 1.845213] pci 0000:00:01.0: Adding to iommu group 0 [ 1.845240] pci 0000:00:01.3: Adding to iommu group 1 [ 1.845267] pci 0000:00:02.0: Adding to iommu group 2 [ 1.845284] pci 0000:00:02.1: Adding to iommu group 3 [ 1.845301] pci 0000:00:02.2: Adding to iommu group 4 [ 1.845318] pci 0000:00:02.4: Adding to iommu group 5 [ 1.845349] pci 0000:00:08.0: Adding to iommu group 6 [ 1.845368] pci 0000:00:08.1: Adding to iommu group 6 [ 1.845394] pci 0000:00:14.0: Adding to iommu group 7 [ 1.845411] pci 0000:00:14.3: Adding to iommu group 7 [ 1.845469] pci 0000:00:18.0: Adding to iommu group 8 [ 1.845484] pci 0000:00:18.1: Adding to iommu group 8 [ 1.845500] pci 0000:00:18.2: Adding to iommu group 8 [ 1.845515] pci 0000:00:18.3: Adding to iommu group 8 [ 1.845530] pci 0000:00:18.4: Adding to iommu group 8 [ 1.845545] pci 0000:00:18.5: Adding to iommu group 8 [ 1.845559] pci 0000:00:18.6: Adding to iommu group 8 [ 1.845574] pci 0000:00:18.7: Adding to iommu group 8 [ 1.845592] pci 0000:01:00.0: Adding to iommu group 9 [ 1.845611] pci 0000:02:00.0: Adding to iommu group 10 [ 1.845629] pci 0000:03:00.0: Adding to iommu group 11 [ 1.845646] pci 0000:04:00.0: Adding to iommu group 12 [ 1.845665] pci 0000:05:00.0: Adding to iommu group 6 [ 1.845674] pci 0000:05:00.1: Adding to iommu group 6 [ 1.845683] pci 0000:05:00.2: Adding to iommu group 6 [ 1.845691] pci 0000:05:00.3: Adding to iommu group 6 [ 1.845699] pci 0000:05:00.4: Adding to iommu group 6 [ 1.845706] pci 0000:05:00.5: Adding to iommu group 6 [ 1.845714] pci 0000:05:00.6: Adding to iommu group 6 [ 1.848251] pci 0000:00:00.2: AMD-Vi: Found IOMMU cap 0x40 [ 1.848257] pci 0000:00:00.2: AMD-Vi: Extended features (0x206d73ef22254ade): [ 1.848258] PPR X2APIC NX GT IA GA PC GA_vAPIC [ 1.848263] AMD-Vi: Interrupt remapping enabled [ 1.848264] AMD-Vi: Virtual APIC enabled [ 1.848264] AMD-Vi: X2APIC enabled [ 1.848490] AMD-Vi: Lazy IO/TLB flushing enabled --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=