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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2018-03-20 15:02:08 +0100 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2018-03-28 22:47:06 +0200 |
| commit | a46d15cc1ae5af905afac2af4cc0c188c2eb59b0 (patch) | |
| tree | 583e833789b6b1e72a6ecbad409227d9b42c1289 /arch/x86/include/asm/hyperv-tlfs.h | |
| parent | d4abc577bb03a3facc0f21cc1f2c6b27cd0f5d07 (diff) | |
| download | linux-0-day-a46d15cc1ae5af905afac2af4cc0c188c2eb59b0.tar.gz linux-0-day-a46d15cc1ae5af905afac2af4cc0c188c2eb59b0.tar.xz | |
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 <vkuznets@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/hyperv-tlfs.h')
| -rw-r--r-- | arch/x86/include/asm/hyperv-tlfs.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index a36ad742eac75..8d5a71702764c 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -163,6 +163,9 @@ /* Recommend using the newer ExProcessorMasks interface */ #define HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED (1 << 11) +/* Recommend using enlightened VMCS */ +#define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED (1 << 14) + /* * Crash notification flag. */ @@ -480,6 +483,16 @@ struct hv_timer_message_payload { __u64 delivery_time; /* When the message was delivered */ }; +/* Define virtual processor assist page structure. */ +struct hv_vp_assist_page { + __u32 apic_assist; + __u32 reserved; + __u64 vtl_control[2]; + __u64 nested_enlightenments_control[2]; + __u32 enlighten_vmentry; + __u64 current_nested_vmcs; +}; + #define HV_STIMER_ENABLE (1ULL << 0) #define HV_STIMER_PERIODIC (1ULL << 1) #define HV_STIMER_LAZY (1ULL << 2) |