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

[gengdongjiu]

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.

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