On Mon, Feb 21, 2022 at 11:14:58PM +0800, Tianyu Lan wrote: > Sorry. The boot failure is not related with these patches and the issue > has been fixed in the latest upstream code. > > There is a performance bottleneck due to io tlb mem's spin lock during > performance test. All devices'io queues uses same io tlb mem entry > and the spin lock of io tlb mem introduce overheads. There is a fix patch > from Andi Kleen in the github. Could you have a look? > > https://github.com/intel/tdx/commit/4529b5784c141782c72ec9bd9a92df2b68cb7d45 Please post these things to the list. But I suspect the right answer for the "secure" hypervisor case is to use the per-device swiotlb regions that we've recently added.
