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

[gengdongjiu]

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.


> 
> thanks
> -- PMM
> 
> .
>