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

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On 9/30/21 8:20 AM, Michael S. Tsirkin wrote:
On Thu, Sep 30, 2021 at 08:18:18AM -0700, Kuppuswamy, Sathyanarayanan wrote:


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) },

Presumably modern IDs should be allowed too?

You mean IDs in range 104x right? If yes, we also allow them for above
mentioned types.



--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer



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