* Joerg Roedel (jroedel@xxxxxxx) wrote: > On Mon, Nov 15, 2021 at 12:30:59PM +0000, Dr. David Alan Gilbert wrote: > > Still; I wonder if it's best to kill the guest - maybe it's best for > > the host to kill the guest and leave behind diagnostics of what > > happened; for someone debugging the crash, it's going to be less useful > > to know that page X was wrongly accessed (which is what the guest would > > see), and more useful to know that it was the kernel's vhost-... driver > > that accessed it. > > I is best to let the guest #VC on the page when this happens. If it > happened because of a guest bug all necessary debugging data is in the > guest and only the guest owner can obtain it. > > Then the guest owner can do a kdump on this unexpected #VC and collect > the data to debug the issue. With just killing the guest from the host > side this data would be lost. How would you debug an unexpected access by the host kernel using a guests kdump? Dave > Regards, > > Joerg > -- Dr. David Alan Gilbert / dgilbert@xxxxxxxxxx / Manchester, UK
