> From: Xiaoyao Li <xiaoyao.li@xxxxxxxxx> > Sent: Tuesday, July 18, 2023 7:31 PM > ... > 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? In my test, Hyper-V can process 1 to 9 pages in one call. Most of the time, Hyper-V only processes 2 pages or 1 page, in one call. Thanks, Dexuan
