Messages in this thread | | | Date | Thu, 19 Jan 2023 21:34:23 +0000 | Subject | [PATCH v3 0/2] kvm: sev: Add SNP guest request throttling | From | Dionna Glaze <> |
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This patch series is based on
[RFC,v7,00/64] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support
The GHCB specification recommends that SNP guest requests should be rate limited. This 2 patch series adds such rate limiting with a 2 burst, 2 second interval per VM as the default values for two new kvm-amd module parameters: guest_request_throttle_s guest_request_throttle_burst
This patch series cooperates with the guest series,
Add throttling detection to sev-guest
in order for guests to retry when throttled, rather than disable the VMPCK and fail to complete their request.
Changes since v2: * Rebased on v7, changed "we" wording to passive voice. Changes since v1: * Added missing Ccs to patches.
Dionna Glaze (2): kvm: sev: Add SEV-SNP guest request throttling kvm: sev: If ccp is busy, report throttled to guest
arch/x86/include/asm/sev-common.h | 1 + arch/x86/kvm/svm/sev.c | 47 +++++++++++++++++++++++++++++-- arch/x86/kvm/svm/svm.h | 3 ++ include/uapi/linux/in.h | 1 + 4 files changed, 50 insertions(+), 2 deletions(-)
-- 2.39.0.246.g2a6d74b583-goog
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