3 ms·
At least modern Google Pixel phones have an IOMMU (https://grapheneos.org/faq#baseband-isolation https://grapheneos.org/faq#baseband-isolation)
by devit 3y ago
At least modern Google Pixel phones have an IOMMU (https://grapheneos.org/faq#baseband-isolation https://grapheneos.org/faq#baseband-isolation)
- csdvrx 3y ago> A component being on a separate chip is orthogonal to whether it's isolated. In order to be isolated, the drivers need to treat it as untrusted. If it has DMA access, that needs to be contained via IOMMU and the driver needs to treat the shared memory as untrusted, as it would do with data received another way YES!