Vitaly Kuznetsov <[email protected]> writes: > Hyper-V TLFS suggests an optimization to avoid imminent VMExit on EOI: > "The OS performs an EOI by atomically writing zero to the EOI Assist field > of the virtual VP assist page and checking whether the "No EOI required" > field was previously zero. If it was, the OS must write to the > HV_X64_APIC_EOI MSR thereby triggering an intercept into the hypervisor." > > Implement the optimization in Linux. >
Simon, Long, did you get a chance to run some tests with this? -- Vitaly
