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e984097b55
Signed-off: Peter Lieven <pl@kamp.de>
Signed-off: Gleb Natapov
Signed-off: Vadim Rozenfeld <vrozenfe@redhat.com>
After some consideration I decided to submit only Hyper-V reference
counters support this time. I will submit iTSC support as a separate
patch as soon as it is ready.
v1 -> v2
1. mark TSC page dirty as suggested by
Eric Northup <digitaleric@google.com> and Gleb
2. disable local irq when calling get_kernel_ns,
as it was done by Peter Lieven <pl@amp.de>
3. move check for TSC page enable from second patch
to this one.
v3 -> v4
Get rid of ref counter offset.
v4 -> v5
replace __copy_to_user with kvm_write_guest
when updateing iTSC page.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
227 lines
8.0 KiB
C
227 lines
8.0 KiB
C
#ifndef _ASM_X86_HYPERV_H
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#define _ASM_X86_HYPERV_H
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#include <linux/types.h>
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/*
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* The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent
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* is set by CPUID(HvCpuIdFunctionVersionAndFeatures).
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*/
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#define HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS 0x40000000
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#define HYPERV_CPUID_INTERFACE 0x40000001
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#define HYPERV_CPUID_VERSION 0x40000002
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#define HYPERV_CPUID_FEATURES 0x40000003
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#define HYPERV_CPUID_ENLIGHTMENT_INFO 0x40000004
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#define HYPERV_CPUID_IMPLEMENT_LIMITS 0x40000005
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#define HYPERV_HYPERVISOR_PRESENT_BIT 0x80000000
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#define HYPERV_CPUID_MIN 0x40000005
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#define HYPERV_CPUID_MAX 0x4000ffff
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/*
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* Feature identification. EAX indicates which features are available
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* to the partition based upon the current partition privileges.
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*/
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/* VP Runtime (HV_X64_MSR_VP_RUNTIME) available */
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#define HV_X64_MSR_VP_RUNTIME_AVAILABLE (1 << 0)
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/* Partition Reference Counter (HV_X64_MSR_TIME_REF_COUNT) available*/
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#define HV_X64_MSR_TIME_REF_COUNT_AVAILABLE (1 << 1)
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/* A partition's reference time stamp counter (TSC) page */
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#define HV_X64_MSR_REFERENCE_TSC 0x40000021
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/*
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* There is a single feature flag that signifies the presence of the MSR
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* that can be used to retrieve both the local APIC Timer frequency as
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* well as the TSC frequency.
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*/
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/* Local APIC timer frequency MSR (HV_X64_MSR_APIC_FREQUENCY) is available */
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#define HV_X64_MSR_APIC_FREQUENCY_AVAILABLE (1 << 11)
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/* TSC frequency MSR (HV_X64_MSR_TSC_FREQUENCY) is available */
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#define HV_X64_MSR_TSC_FREQUENCY_AVAILABLE (1 << 11)
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/*
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* Basic SynIC MSRs (HV_X64_MSR_SCONTROL through HV_X64_MSR_EOM
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* and HV_X64_MSR_SINT0 through HV_X64_MSR_SINT15) available
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*/
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#define HV_X64_MSR_SYNIC_AVAILABLE (1 << 2)
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/*
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* Synthetic Timer MSRs (HV_X64_MSR_STIMER0_CONFIG through
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* HV_X64_MSR_STIMER3_COUNT) available
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*/
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#define HV_X64_MSR_SYNTIMER_AVAILABLE (1 << 3)
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/*
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* APIC access MSRs (HV_X64_MSR_EOI, HV_X64_MSR_ICR and HV_X64_MSR_TPR)
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* are available
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*/
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#define HV_X64_MSR_APIC_ACCESS_AVAILABLE (1 << 4)
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/* Hypercall MSRs (HV_X64_MSR_GUEST_OS_ID and HV_X64_MSR_HYPERCALL) available*/
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#define HV_X64_MSR_HYPERCALL_AVAILABLE (1 << 5)
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/* Access virtual processor index MSR (HV_X64_MSR_VP_INDEX) available*/
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#define HV_X64_MSR_VP_INDEX_AVAILABLE (1 << 6)
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/* Virtual system reset MSR (HV_X64_MSR_RESET) is available*/
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#define HV_X64_MSR_RESET_AVAILABLE (1 << 7)
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/*
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* Access statistics pages MSRs (HV_X64_MSR_STATS_PARTITION_RETAIL_PAGE,
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* HV_X64_MSR_STATS_PARTITION_INTERNAL_PAGE, HV_X64_MSR_STATS_VP_RETAIL_PAGE,
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* HV_X64_MSR_STATS_VP_INTERNAL_PAGE) available
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*/
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#define HV_X64_MSR_STAT_PAGES_AVAILABLE (1 << 8)
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/*
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* Feature identification: EBX indicates which flags were specified at
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* partition creation. The format is the same as the partition creation
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* flag structure defined in section Partition Creation Flags.
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*/
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#define HV_X64_CREATE_PARTITIONS (1 << 0)
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#define HV_X64_ACCESS_PARTITION_ID (1 << 1)
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#define HV_X64_ACCESS_MEMORY_POOL (1 << 2)
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#define HV_X64_ADJUST_MESSAGE_BUFFERS (1 << 3)
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#define HV_X64_POST_MESSAGES (1 << 4)
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#define HV_X64_SIGNAL_EVENTS (1 << 5)
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#define HV_X64_CREATE_PORT (1 << 6)
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#define HV_X64_CONNECT_PORT (1 << 7)
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#define HV_X64_ACCESS_STATS (1 << 8)
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#define HV_X64_DEBUGGING (1 << 11)
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#define HV_X64_CPU_POWER_MANAGEMENT (1 << 12)
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#define HV_X64_CONFIGURE_PROFILER (1 << 13)
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/*
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* Feature identification. EDX indicates which miscellaneous features
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* are available to the partition.
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*/
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/* The MWAIT instruction is available (per section MONITOR / MWAIT) */
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#define HV_X64_MWAIT_AVAILABLE (1 << 0)
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/* Guest debugging support is available */
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#define HV_X64_GUEST_DEBUGGING_AVAILABLE (1 << 1)
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/* Performance Monitor support is available*/
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#define HV_X64_PERF_MONITOR_AVAILABLE (1 << 2)
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/* Support for physical CPU dynamic partitioning events is available*/
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#define HV_X64_CPU_DYNAMIC_PARTITIONING_AVAILABLE (1 << 3)
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/*
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* Support for passing hypercall input parameter block via XMM
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* registers is available
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*/
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#define HV_X64_HYPERCALL_PARAMS_XMM_AVAILABLE (1 << 4)
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/* Support for a virtual guest idle state is available */
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#define HV_X64_GUEST_IDLE_STATE_AVAILABLE (1 << 5)
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/*
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* Implementation recommendations. Indicates which behaviors the hypervisor
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* recommends the OS implement for optimal performance.
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*/
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/*
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* Recommend using hypercall for address space switches rather
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* than MOV to CR3 instruction
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*/
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#define HV_X64_MWAIT_RECOMMENDED (1 << 0)
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/* Recommend using hypercall for local TLB flushes rather
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* than INVLPG or MOV to CR3 instructions */
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#define HV_X64_LOCAL_TLB_FLUSH_RECOMMENDED (1 << 1)
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/*
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* Recommend using hypercall for remote TLB flushes rather
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* than inter-processor interrupts
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*/
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#define HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED (1 << 2)
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/*
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* Recommend using MSRs for accessing APIC registers
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* EOI, ICR and TPR rather than their memory-mapped counterparts
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*/
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#define HV_X64_APIC_ACCESS_RECOMMENDED (1 << 3)
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/* Recommend using the hypervisor-provided MSR to initiate a system RESET */
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#define HV_X64_SYSTEM_RESET_RECOMMENDED (1 << 4)
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/*
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* Recommend using relaxed timing for this partition. If used,
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* the VM should disable any watchdog timeouts that rely on the
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* timely delivery of external interrupts
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*/
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#define HV_X64_RELAXED_TIMING_RECOMMENDED (1 << 5)
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/* MSR used to identify the guest OS. */
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#define HV_X64_MSR_GUEST_OS_ID 0x40000000
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/* MSR used to setup pages used to communicate with the hypervisor. */
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#define HV_X64_MSR_HYPERCALL 0x40000001
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/* MSR used to provide vcpu index */
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#define HV_X64_MSR_VP_INDEX 0x40000002
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/* MSR used to read the per-partition time reference counter */
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#define HV_X64_MSR_TIME_REF_COUNT 0x40000020
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/* MSR used to retrieve the TSC frequency */
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#define HV_X64_MSR_TSC_FREQUENCY 0x40000022
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/* MSR used to retrieve the local APIC timer frequency */
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#define HV_X64_MSR_APIC_FREQUENCY 0x40000023
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/* Define the virtual APIC registers */
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#define HV_X64_MSR_EOI 0x40000070
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#define HV_X64_MSR_ICR 0x40000071
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#define HV_X64_MSR_TPR 0x40000072
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#define HV_X64_MSR_APIC_ASSIST_PAGE 0x40000073
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/* Define synthetic interrupt controller model specific registers. */
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#define HV_X64_MSR_SCONTROL 0x40000080
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#define HV_X64_MSR_SVERSION 0x40000081
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#define HV_X64_MSR_SIEFP 0x40000082
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#define HV_X64_MSR_SIMP 0x40000083
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#define HV_X64_MSR_EOM 0x40000084
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#define HV_X64_MSR_SINT0 0x40000090
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#define HV_X64_MSR_SINT1 0x40000091
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#define HV_X64_MSR_SINT2 0x40000092
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#define HV_X64_MSR_SINT3 0x40000093
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#define HV_X64_MSR_SINT4 0x40000094
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#define HV_X64_MSR_SINT5 0x40000095
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#define HV_X64_MSR_SINT6 0x40000096
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#define HV_X64_MSR_SINT7 0x40000097
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#define HV_X64_MSR_SINT8 0x40000098
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#define HV_X64_MSR_SINT9 0x40000099
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#define HV_X64_MSR_SINT10 0x4000009A
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#define HV_X64_MSR_SINT11 0x4000009B
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#define HV_X64_MSR_SINT12 0x4000009C
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#define HV_X64_MSR_SINT13 0x4000009D
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#define HV_X64_MSR_SINT14 0x4000009E
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#define HV_X64_MSR_SINT15 0x4000009F
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#define HV_X64_MSR_HYPERCALL_ENABLE 0x00000001
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#define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT 12
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#define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_MASK \
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(~((1ull << HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT) - 1))
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/* Declare the various hypercall operations. */
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#define HV_X64_HV_NOTIFY_LONG_SPIN_WAIT 0x0008
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#define HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE 0x00000001
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#define HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT 12
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#define HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_MASK \
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(~((1ull << HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT) - 1))
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#define HV_X64_MSR_TSC_REFERENCE_ENABLE 0x00000001
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#define HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT 12
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#define HV_PROCESSOR_POWER_STATE_C0 0
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#define HV_PROCESSOR_POWER_STATE_C1 1
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#define HV_PROCESSOR_POWER_STATE_C2 2
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#define HV_PROCESSOR_POWER_STATE_C3 3
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/* hypercall status code */
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#define HV_STATUS_SUCCESS 0
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#define HV_STATUS_INVALID_HYPERCALL_CODE 2
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#define HV_STATUS_INVALID_HYPERCALL_INPUT 3
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#define HV_STATUS_INVALID_ALIGNMENT 4
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#define HV_STATUS_INSUFFICIENT_BUFFERS 19
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typedef struct _HV_REFERENCE_TSC_PAGE {
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__u32 tsc_sequence;
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__u32 res1;
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__u64 tsc_scale;
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__s64 tsc_offset;
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} HV_REFERENCE_TSC_PAGE, *PHV_REFERENCE_TSC_PAGE;
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#endif
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