[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <e75569a8-6b15-780c-a7fa-945f1cce576c@amd.com>
Date: Thu, 19 Jan 2023 14:54:01 -0600
From: "Kalra, Ashish" <ashish.kalra@....com>
To: Dionna Amalie Glaze <dionnaglaze@...gle.com>,
Michael Roth <michael.roth@....com>
Cc: kvm@...r.kernel.org, linux-coco@...ts.linux.dev,
linux-mm@...ck.org, linux-crypto@...r.kernel.org, x86@...nel.org,
linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
jroedel@...e.de, thomas.lendacky@....com, hpa@...or.com,
ardb@...nel.org, pbonzini@...hat.com, seanjc@...gle.com,
vkuznets@...hat.com, wanpengli@...cent.com, jmattson@...gle.com,
luto@...nel.org, dave.hansen@...ux.intel.com, slp@...hat.com,
pgonda@...gle.com, peterz@...radead.org,
srinivas.pandruvada@...ux.intel.com, rientjes@...gle.com,
dovmurik@...ux.ibm.com, tobin@....com, bp@...en8.de,
vbabka@...e.cz, kirill@...temov.name, ak@...ux.intel.com,
tony.luck@...el.com, marcorr@...gle.com,
sathyanarayanan.kuppuswamy@...ux.intel.com, alpergun@...gle.com,
dgilbert@...hat.com, jarkko@...nel.org, harald@...fian.com,
Brijesh Singh <brijesh.singh@....com>
Subject: Re: [PATCH RFC v7 52/64] KVM: SVM: Provide support for
SNP_GUEST_REQUEST NAE event
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.
Thanks,
Ashish
Powered by blists - more mailing lists