On 06.03.2020 19:42, Maxime Villard wrote: > Having said that, indeed KVM will architecturally perform fewer syscalls, > because it emulates certain devices in kernel mode -- which can increase > performance because it avoids a kernel<->userland cycle, but can decrease > security (see bug class above).
Future hardware can deliver hardware assisted devices removing the need for this emulation of certain devices in software. Once we will be there, there might be no good reason to decode instructions in the kernel.
