On Mon, 17 Feb 2020 at 13:10, Dongjiu Geng <gengdongjiu@xxxxxxxxxx> wrote: > > In the ARMv8 platform, the CPU error types includes synchronous external abort(SEA) and SError Interrupt (SEI). If exception happens in guest, host does not know the detailed information of guest, so it is expected that guest can do the recovery. > For example, if an exception happens in a guest user-space application, host does > not know which application encounters errors, only guest knows it. > > For the ARMv8 SEA/SEI, KVM or host kernel delivers SIGBUS to notify userspace. > After user space gets the notification, it will record the CPER into guest GHES > buffer and inject an exception or IRQ to guest. > > In the current implementation, if the type of SIGBUS is BUS_MCEERR_AR, we will > treat it as a synchronous exception, and notify guest with ARMv8 SEA > notification type after recording CPER into guest. Hi; I have reviewed the remaining arm bit of this series (patch 9), and made some comments on patch 1. Still to be reviewed are patches 4, 5, 6, 8: I'm going to assume that Michael or Igor will look at those. thanks -- PMM
