4/3/2023 0 Comments Qemu system i386 get out![]() Using this enlightenment leads to significant speedup of all timestampĮnables Hyper-V Synthetic interrupt controller - an extension of a local APIC. Both clocksourcesĪre per-guest, Reference TSC page clocksource allows for exit-less time stamp Page (enabled via MSR HV_X64_MSR_REFERENCE_TSC, 0x40000021). Hyper-V clocksource (HV_X64_MSR_TIME_REF_COUNT, 0x40000020) and Reference TSC hv-timeĮnables two Hyper-V-specific clocksources available to the guest: MSR-based This effectively blocks crash dump generation by Windows. Note: unlike under genuine Hyper-V, write to HV_X64_MSR_CRASH_CTL causes guest This information is outputted in QEMU log These MSRs are written toīy the guest when it crashes, HV_X64_MSR_CRASH_P0.HV_X64_MSR_CRASH_P5 MSRsĬontain additional crash information. ![]() Idea of how much time was ‘stolen’ from it (when the virtual CPU was preempted Virtual processor run time in 100ns units. Provides HV_X64_MSR_VP_RUNTIME (0x40000010) MSR to the guest. ![]() Hv-synic, hv-stimer and other enlightenments which require the guest to know its This enlightenment makes sense in conjunction with Provides HV_X64_MSR_VP_INDEX (0x40000002) MSR to the guest which has Virtual A special value 0xffffffff indicates “never notify”. Spinlock acquisition should be attempted before indicating the situation to the hv-spinlocks = xxxĮnables paravirtualized spinlocks. In particular, this enlightenment allows paravirtualized Provides so-called VP Assist page MSR to guest allowing it to work with APIC It is known that some Windows versions will do this even when they This feature tells guest OS to disable watchdog timeouts as it is running on a
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