[bug report] KVM: arm64: vgic-v4: Occasionally issue VMOVP to an unmapped VPE on GICv4.1

Kunkun Jiang jiangkunkun at huawei.com
Sun Sep 29 23:33:34 PDT 2024


Hi Ganapat,

On 2024/9/30 13:18, Ganapatrao Kulkarni wrote:
> 
> Hi Kunkun,
> 
> On 29-09-2024 12:48 pm, Kunkun Jiang wrote:
>> Hi all,
>>
>> I found a problem with occasionally issuing VMOVP to an unmapped VPE 
>> on GICv4.1. In my test environment, operating an unmapped VPE will 
>> generate RAS, so I found this problem. The detailed analysis is as 
>> follows.
>>
> 
> May I know, what specific RAS errors you are getting?

The hardware checks whether the VPE in the VPE table is valid when 
processing the VMOVP. If the VPE is invalid, a RAS message is reported.

Thanks,
Kunkun Jiang



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