linux-kernel - Re: [PATCH v2 4/6] virtio: Initialize authorized attribute for confidential guest

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Message-ID: <6d1e2701-5095-d110-3b0a-2697abd0c489@linux.intel.com>
Date:   Thu, 30 Sep 2021 08:18:18 -0700
From:   "Kuppuswamy, Sathyanarayanan" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     Dan Williams <dan.j.williams@...el.com>,
        "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Borislav Petkov <bp@...en8.de>, X86 ML <x86@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Jonathan Corbet <corbet@....net>,
        Jason Wang <jasowang@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kuppuswamy Sathyanarayanan <knsathya@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PCI <linux-pci@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v2 4/6] virtio: Initialize authorized attribute for
 confidential guest



On 9/30/21 6:36 AM, Dan Williams wrote:
>> And in particular, not all virtio drivers are hardened -
>> I think at this point blk and scsi drivers have been hardened - so
>> treating them all the same looks wrong.
> My understanding was that they have been audited, Sathya?

Yes, AFAIK, it has been audited. Andi also submitted some patches
related to it. Andi, can you confirm.

We also authorize the virtio at PCI ID level. And currently we allow
console, block and net virtio PCI devices.

{ PCI_DEVICE(PCI_VENDOR_ID_REDHAT_QUMRANET, VIRTIO_TRANS_ID_NET) },
{ PCI_DEVICE(PCI_VENDOR_ID_REDHAT_QUMRANET, VIRTIO_TRANS_ID_BLOCK) },
{ PCI_DEVICE(PCI_VENDOR_ID_REDHAT_QUMRANET, VIRTIO_TRANS_ID_CONSOLE) },


-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer