Re: [PATCH v25 00/10] Add ARMv8 RAS virtualization support in QEMU

[Igor Mammedov]

On Thu, 30 Apr 2020 11:56:24 +0800
gengdongjiu <address@hidden> wrote:

> On 2020/4/17 21:32, Peter Maydell wrote:
> > On Fri, 10 Apr 2020 at 12:46, 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 left a comment on patch 1. The other 3 patches unreviewed
> > are 5, 6 and 8, which are all ACPI core code, so that's for
> > MST, Igor or Shannon to review.  
> 
> Ping MST, Igor and Shannon, sorry for the noise.

I put it on my review queue 

> 
> > 
> > Once those have been reviewed, please ping me if you want this
> > to go via target-arm.next.
> > 
> > thanks
> > -- PMM
> > 
> > .
> >   
>