From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D500C184E for ; Mon, 28 Apr 2025 22:46:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745880371; cv=none; b=WfexQNg5Kr8T9NxmZjYGvXkJbgZF/rJeZsfKoG7ozCKgZMS96+EG9N5gpLU1GdlVUJzFvbOWOJ8O6RLrYq4QB4tKnJW6uKwuPfvcvUg9NJUNKB8FYMhh8dk5Zakh3D25a6m2j0VqpmCw6f+92bP2CyKx7Bp/f09hfRFf0TQmMSU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745880371; c=relaxed/simple; bh=jU17GLq6S6yqjF3hN3CTfiSp96XdY27u3/1Fve9LrLs=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=YxON+1tY/QXTCBm0e7L2PzMZJCYryV+E2uuvF6J0pz8idmTfDX6K/cMwCPtN0wTjJ+rYh/k8nk1Uc5BaYatru+XPtVlFi0G74VeALzzGfBws8Wax8dazGR2b5DSb5Yohj3hjSnFx6ZIW7Se6lOmqJrasdjHQKSCvO0V2iDO2dhg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iI5vYC/A; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iI5vYC/A" Received: by smtp.kernel.org (Postfix) with ESMTPS id 42D40C4CEEF for ; Mon, 28 Apr 2025 22:46:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745880371; bh=jU17GLq6S6yqjF3hN3CTfiSp96XdY27u3/1Fve9LrLs=; h=From:To:Subject:Date:In-Reply-To:References:From; b=iI5vYC/APzhDqbqWOZ3bpSsmwWQZ7GONju04lYlwMol0culC2RpE7iS2fgn2ByCOt Q0XW0avFApLgpavle43nkhgU83OKNoxUCpwdNm7aoleSWpFn1DOLk0WgsNVgH3XsDG zqzewGz+KvrE1clDPc+vCv36Lj2tUBbwwq/j3PECIIYJmUJbd7N0FV01bL9r1cfUXf SVTJh3ZnMd/ziWd+wCqz/k8P1oYJhXtuK9d1qjHST2yLEU3HokOep6mPcCfo8GRyeA vEVkIxfodX1Kfg7Djr8+g9zNgqSeBle6b3DSFcwDgy5Dn8P2MsXdcgAzrCks6ZgzT0 J/5SXFvbGSROw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 3A508C4160E; Mon, 28 Apr 2025 22:46:11 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 220057] Kernel regression. Linux VMs crashing (I did not test Windows guest VMs) Date: Mon, 28 Apr 2025 22:46:10 +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: blocking X-Bugzilla-Who: alex.williamson@redhat.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 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 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220057 --- Comment #19 from Alex Williamson (alex.williamson@redhat.com) --- (In reply to Adolfo from comment #16) > > Doesn't seam to do anything, no. >=20 > ---- > cores: 8 > cpu: host,flags=3D+pdpe1gb,phys-bits=3D39 > cpuunits: 200 > efidisk0: local-lvm:vm-200-disk-0,efitype=3D4m,pre-enrolled-keys=3D1,size= =3D4 > ... I'm getting that option from here: https://pve.proxmox.com/wiki/Manual:_qm.conf Can you find the QEMU command line in ps while the VM is running? ex. `ps a= ux | grep qemu` There should be a difference in the QEMU command line proxmox is using with the option, and it should at least change the addresses based at 0x380000000000 in the logs. I think the issue with the failed mappings is that you CPU physical address width is 46-bits: Address sizes: 46 bits physical, 48 bits virtual But the host IOMMU width is 39-bits: [ 0.341856] DMAR: Host address width 39 Therefore the VM is giving the devices an IOVA that cannot be mapped by the host IOMMU. I don't know if ultimately that contributes to the issue you're reporting, but it might. --=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.=