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SubjectRe: [PATCH v3 00/10] Add Intel VT-d nested translation
On Wed, Jun 14, 2023 at 08:07:30AM +0000, Tian, Kevin wrote:

> think of a scenario where the vbios memory is shared by multiple qemu
> instances then RW allows a malicious VM to modify the shared content
> then potentially attacking other VMs.

qemu would have to map the vbios as MAP_PRIVATE WRITE before the iommu
side could map it writable, so this is not a real worry.

Jason

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