On Fri, Aug 09, 2024, Anish Moorthy wrote: > Right now userspace just gets a bare EFAULT when the stage-2 fault > handler fails to fault in the relevant page. Set up a memory fault exit > when this happens, which at the very least eases debugging and might > also let userspace decide on/take some specific action other than > crashing the VM. Heh, most of the way there (from my hack-a-patch response), just need to add the KVM_BUG_ON() + -EIO conversions. Can you send x86 and arm64 as separate series for v3? E.g. for x86, just this patch and the -EIO changes. I'm pretty sure the docs updates can go in the arm64 series (I need to send another response to that patch).
