Sync TSC for guest when vcpu has been migrated to another cpu
Get series with b4
b4 am [email protected]Versions newest first
- v1 Latest3 patches 4 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | Sync guest viewable TSC when vcpu migrateddrivers/ drivers/ | +64 | 3 replies | |
| 2/3 | Add a vcpu_migrated statisticdrivers/ drivers/ drivers/ | +5 | 1 reply | |
| 3/3 | Widen key column in kvm_statkvm_stat | +2 | 0 replies |
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Cover letter [PATCH 0/3] Sync TSC for guest when vcpu has been migrated to another cpu
When a vcpu is migrated to another cpu, an unexpected difference in current and previous cpu TSC values can cause a guest to wait indefinitely. A known workaround has been to run kvm with taskset, locking it to a single cpu. This patch series modifies the guest TSC offset as needed to guarantee that the guest sees a monotonically increasing TSC, adds a statistic for vcpu_migrated and updates kvm_stat so the first column isn't truncated.
[1/3] Sync guest viewable TSC when vcpu migrated
[2/3] Add a vcpu_migrated statistic
[3/3] Widen key column in kvm_stat
-- Leonard
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