On 6/22/2023 3:13 AM, Dexuan Cui wrote:
GHCI spec for TDX 1.0 says that the MapGPA call may fail with the R10 error code = TDG.VP.VMCALL_RETRY (1), and the guest must retry this operation for the pages in the region starting at the GPA specified in R11. When a fully enlightened TDX guest runs on Hyper-V, Hyper-V can return the retry error when set_memory_decrypted() is called to decrypt up to 1GB of swiotlb bounce buffers.
just out of curiosity, what size does Hyper-v handle at most in one call?
