Re: [PATCH RFC v7 52/64] KVM: SVM: Provide support for SNP_GUEST_REQUEST NAE event

[Dov Murik]

On 19/01/2023 22:54, Kalra, Ashish wrote:
> 
> On 1/19/2023 2:35 PM, Dionna Amalie Glaze wrote:
>>> +
>>> +static void snp_handle_guest_request(struct vcpu_svm *svm, gpa_t
>>> req_gpa, gpa_t resp_gpa)
>>> +{
>>
>> Both regular,
>>
>>> +
>>> +static void snp_handle_ext_guest_request(struct vcpu_svm *svm, gpa_t
>>> req_gpa, gpa_t resp_gpa)
>>> +{
>>
>> and extended guest requests should be subject to rate limiting, since
>> they take a lock on the shared resource that is the AMD-SP (psp?). I
>> proposed a mechanism with empirically chosen defaults in
>>
>> [PATCH v2 0/2] kvm: sev: Add SNP guest request throttling
>> [PATCH v2 1/2] kvm: sev: Add SEV-SNP guest request throttling
>> [PATCH v2 2/2] kvm: sev: If ccp is busy, report throttled to guest
>>
>> http://129.79.113.48/hypermail/linux/kernel/2211.2/03107.html
>> http://129.79.113.48/hypermail/linux/kernel/2211.2/03110.html
>> http://129.79.113.48/hypermail/linux/kernel/2211.2/03111.html
>>
>> But I don't see these on lore. Would you like me to repost these?
>>
> 
> Yes, please.
> 

I think it's this series:

https://lore.kernel.org/all/20221117181127.1859634-1-dionnaglaze@xxxxxxxxxx/

-Dov