Re: [PATCH v4 4/7] x86/hyper-v: allocate and use Virtual Processor Assist Pages

On Fri, 16 Mar 2018, Vitaly Kuznetsov wrote: > static int hv_cpu_init(unsigned int cpu) > @@ -101,6 +104,23 @@ static int hv_cpu_init(unsigned int cpu) > if (msr_vp_index > hv_max_vp_index) > hv_max_vp_index = msr_vp_index; > > + if (!hv_vp_assist_page) > + re

[PATCH v4 4/7] x86/hyper-v: allocate and use Virtual Processor Assist Pages

Virtual Processor Assist Pages usage allows us to do optimized EOI processing for APIC, enable Enlightened VMCS support in KVM and more. struct hv_vp_assist_page is defined according to the Hyper-V TLFS v5.0b. Signed-off-by: Vitaly Kuznetsov --- Changes since v3: - remove vfree() from hv_cpu_die(