Re: Re: [PATCH 0/3] recover hardware corrupted page by virtio balloon

2022-05-30 Thread Jue Wang
On Mon, May 30, 2022 at 8:49 AM Peter Xu wrote: > > On Mon, May 30, 2022 at 07:33:35PM +0800, zhenwei pi wrote: > > A VM uses RAM of 2M huge page. Once a MCE(@HVAy in [HVAx,HVAz)) occurs, the > > 2M([HVAx,HVAz)) of hypervisor becomes unaccessible, but the guest poisons 4K > > (@GPAy in [GPAx, GPAz

Re: [PATCH 0/3] recover hardware corrupted page by virtio balloon

2022-05-25 Thread Jue Wang
Some points to consider: The injected MCE has _done_ the damages to guest workload. Recovering the guest poisoned memory doesn't help with the already happened guest workload memory corruption / loss / interruption due to injected MCEs. The hypervisor _must_ emulate poisons identified in guest ph