Re: [PATCH v24 00/10] Add ARMv8 RAS virtualization support in QEMU

[Igor Mammedov]

On Mon, 24 Feb 2020 16:37:44 +0800
gengdongjiu <address@hidden> wrote:

> On 2020/2/21 22:09, Peter Maydell wrote:
> > On Mon, 17 Feb 2020 at 13:10, Dongjiu Geng <address@hidden> 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 very much for Peter's review.
> Michael/Igor, hope you can review patches 4, 5, 6, 8, thank you very much in 
> advance.

done

> > 
> > thanks
> > -- PMM
> > 
> > .
> >   
>