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

[Dionna Amalie Glaze]

> +
> +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?

-- 
-Dionna Glaze, PhD (she/her)