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

[gengdongjiu]

> 
> 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

Igor, thank you very much in advance.

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