On Thu, Jun 30, 2022 at 6:48 AM Xiaoyao Li <xiaoyao.li@xxxxxxxxx> wrote: > > On 6/11/2022 1:11 AM, Jue Wang wrote: > > This patch series implement emulation for Corrected Machine Check > > Interrupt (CMCI) signaling and UnCorrectable No Action required (UCNA) > > error injection. > > > > It seems the main purpose of this series is to allow UCNA error > injection and notify it to guest via CMCI. > > But it doesn't emulate CMCI fully. E.g., guest's error threshold of > MCi_CTL2 doesn't work. It's still controlled by host's value. > Both of the above points are correct. In fact, this series does not enable injecting corrected errors into a KVM guest at all, for: 1. It is not necessary since corrected errors are transparent to software executions (host / guest). 2. Corrected errors can be fully managed on the host side (monitor, re-act). 3. Prevent guest initiated row-hammer attack based on the injected corrected errors feedback loop. Thanks, -Jue
