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Message-ID: <20260114213803.143486-6-nunodasneves@linux.microsoft.com>
Date: Wed, 14 Jan 2026 13:38:02 -0800
From: Nuno Das Neves <nunodasneves@...ux.microsoft.com>
To: linux-hyperv@...r.kernel.org,
linux-kernel@...r.kernel.org,
mhklinux@...look.com,
skinsburskii@...ux.microsoft.com
Cc: kys@...rosoft.com,
haiyangz@...rosoft.com,
wei.liu@...nel.org,
decui@...rosoft.com,
longli@...rosoft.com,
prapal@...ux.microsoft.com,
mrathor@...ux.microsoft.com,
paekkaladevi@...ux.microsoft.com,
Nuno Das Neves <nunodasneves@...ux.microsoft.com>
Subject: [PATCH v3 5/6] mshv: Add definitions for stats pages
Add the definitions for hypervisor, logical processor, and partition
stats pages.
Move the definition for the VP stats page to its rightful place in
hvhdk.h, and add the missing members.
While at it, correct the ARM64 value of VpRootDispatchThreadBlocked,
(which is not yet used, so there is no impact).
These enum members retain their CamelCase style, since they are imported
directly from the hypervisor code. They will be stringified when
printing the stats out, and retain more readability in this form.
Signed-off-by: Nuno Das Neves <nunodasneves@...ux.microsoft.com>
---
drivers/hv/mshv_root_main.c | 17 --
include/hyperv/hvhdk.h | 437 ++++++++++++++++++++++++++++++++++++
2 files changed, 437 insertions(+), 17 deletions(-)
diff --git a/drivers/hv/mshv_root_main.c b/drivers/hv/mshv_root_main.c
index fbfc9e7d9fa4..724bbaa0b08c 100644
--- a/drivers/hv/mshv_root_main.c
+++ b/drivers/hv/mshv_root_main.c
@@ -39,23 +39,6 @@ MODULE_AUTHOR("Microsoft");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Microsoft Hyper-V root partition VMM interface /dev/mshv");
-/* TODO move this to another file when debugfs code is added */
-enum hv_stats_vp_counters { /* HV_THREAD_COUNTER */
-#if defined(CONFIG_X86)
- VpRootDispatchThreadBlocked = 202,
-#elif defined(CONFIG_ARM64)
- VpRootDispatchThreadBlocked = 94,
-#endif
- VpStatsMaxCounter
-};
-
-struct hv_stats_page {
- union {
- u64 vp_cntrs[VpStatsMaxCounter]; /* VP counters */
- u8 data[HV_HYP_PAGE_SIZE];
- };
-} __packed;
-
struct mshv_root mshv_root;
enum hv_scheduler_type hv_scheduler_type;
diff --git a/include/hyperv/hvhdk.h b/include/hyperv/hvhdk.h
index 469186df7826..8bddd11feeba 100644
--- a/include/hyperv/hvhdk.h
+++ b/include/hyperv/hvhdk.h
@@ -10,6 +10,443 @@
#include "hvhdk_mini.h"
#include "hvgdk.h"
+enum hv_stats_hypervisor_counters { /* HV_HYPERVISOR_COUNTER */
+ HvLogicalProcessors = 1,
+ HvPartitions = 2,
+ HvTotalPages = 3,
+ HvVirtualProcessors = 4,
+ HvMonitoredNotifications = 5,
+ HvModernStandbyEntries = 6,
+ HvPlatformIdleTransitions = 7,
+ HvHypervisorStartupCost = 8,
+ HvIOSpacePages = 10,
+ HvNonEssentialPagesForDump = 11,
+ HvSubsumedPages = 12,
+ HvStatsMaxCounter
+};
+
+enum hv_stats_partition_counters { /* HV_PROCESS_COUNTER */
+ PartitionVirtualProcessors = 1,
+ PartitionTlbSize = 3,
+ PartitionAddressSpaces = 4,
+ PartitionDepositedPages = 5,
+ PartitionGpaPages = 6,
+ PartitionGpaSpaceModifications = 7,
+ PartitionVirtualTlbFlushEntires = 8,
+ PartitionRecommendedTlbSize = 9,
+ PartitionGpaPages4K = 10,
+ PartitionGpaPages2M = 11,
+ PartitionGpaPages1G = 12,
+ PartitionGpaPages512G = 13,
+ PartitionDevicePages4K = 14,
+ PartitionDevicePages2M = 15,
+ PartitionDevicePages1G = 16,
+ PartitionDevicePages512G = 17,
+ PartitionAttachedDevices = 18,
+ PartitionDeviceInterruptMappings = 19,
+ PartitionIoTlbFlushes = 20,
+ PartitionIoTlbFlushCost = 21,
+ PartitionDeviceInterruptErrors = 22,
+ PartitionDeviceDmaErrors = 23,
+ PartitionDeviceInterruptThrottleEvents = 24,
+ PartitionSkippedTimerTicks = 25,
+ PartitionPartitionId = 26,
+#if IS_ENABLED(CONFIG_X86_64)
+ PartitionNestedTlbSize = 27,
+ PartitionRecommendedNestedTlbSize = 28,
+ PartitionNestedTlbFreeListSize = 29,
+ PartitionNestedTlbTrimmedPages = 30,
+ PartitionPagesShattered = 31,
+ PartitionPagesRecombined = 32,
+ PartitionHwpRequestValue = 33,
+#elif IS_ENABLED(CONFIG_ARM64)
+ PartitionHwpRequestValue = 27,
+#endif
+ PartitionStatsMaxCounter
+};
+
+enum hv_stats_vp_counters { /* HV_THREAD_COUNTER */
+ VpTotalRunTime = 1,
+ VpHypervisorRunTime = 2,
+ VpRemoteNodeRunTime = 3,
+ VpNormalizedRunTime = 4,
+ VpIdealCpu = 5,
+ VpHypercallsCount = 7,
+ VpHypercallsTime = 8,
+#if IS_ENABLED(CONFIG_X86_64)
+ VpPageInvalidationsCount = 9,
+ VpPageInvalidationsTime = 10,
+ VpControlRegisterAccessesCount = 11,
+ VpControlRegisterAccessesTime = 12,
+ VpIoInstructionsCount = 13,
+ VpIoInstructionsTime = 14,
+ VpHltInstructionsCount = 15,
+ VpHltInstructionsTime = 16,
+ VpMwaitInstructionsCount = 17,
+ VpMwaitInstructionsTime = 18,
+ VpCpuidInstructionsCount = 19,
+ VpCpuidInstructionsTime = 20,
+ VpMsrAccessesCount = 21,
+ VpMsrAccessesTime = 22,
+ VpOtherInterceptsCount = 23,
+ VpOtherInterceptsTime = 24,
+ VpExternalInterruptsCount = 25,
+ VpExternalInterruptsTime = 26,
+ VpPendingInterruptsCount = 27,
+ VpPendingInterruptsTime = 28,
+ VpEmulatedInstructionsCount = 29,
+ VpEmulatedInstructionsTime = 30,
+ VpDebugRegisterAccessesCount = 31,
+ VpDebugRegisterAccessesTime = 32,
+ VpPageFaultInterceptsCount = 33,
+ VpPageFaultInterceptsTime = 34,
+ VpGuestPageTableMaps = 35,
+ VpLargePageTlbFills = 36,
+ VpSmallPageTlbFills = 37,
+ VpReflectedGuestPageFaults = 38,
+ VpApicMmioAccesses = 39,
+ VpIoInterceptMessages = 40,
+ VpMemoryInterceptMessages = 41,
+ VpApicEoiAccesses = 42,
+ VpOtherMessages = 43,
+ VpPageTableAllocations = 44,
+ VpLogicalProcessorMigrations = 45,
+ VpAddressSpaceEvictions = 46,
+ VpAddressSpaceSwitches = 47,
+ VpAddressDomainFlushes = 48,
+ VpAddressSpaceFlushes = 49,
+ VpGlobalGvaRangeFlushes = 50,
+ VpLocalGvaRangeFlushes = 51,
+ VpPageTableEvictions = 52,
+ VpPageTableReclamations = 53,
+ VpPageTableResets = 54,
+ VpPageTableValidations = 55,
+ VpApicTprAccesses = 56,
+ VpPageTableWriteIntercepts = 57,
+ VpSyntheticInterrupts = 58,
+ VpVirtualInterrupts = 59,
+ VpApicIpisSent = 60,
+ VpApicSelfIpisSent = 61,
+ VpGpaSpaceHypercalls = 62,
+ VpLogicalProcessorHypercalls = 63,
+ VpLongSpinWaitHypercalls = 64,
+ VpOtherHypercalls = 65,
+ VpSyntheticInterruptHypercalls = 66,
+ VpVirtualInterruptHypercalls = 67,
+ VpVirtualMmuHypercalls = 68,
+ VpVirtualProcessorHypercalls = 69,
+ VpHardwareInterrupts = 70,
+ VpNestedPageFaultInterceptsCount = 71,
+ VpNestedPageFaultInterceptsTime = 72,
+ VpPageScans = 73,
+ VpLogicalProcessorDispatches = 74,
+ VpWaitingForCpuTime = 75,
+ VpExtendedHypercalls = 76,
+ VpExtendedHypercallInterceptMessages = 77,
+ VpMbecNestedPageTableSwitches = 78,
+ VpOtherReflectedGuestExceptions = 79,
+ VpGlobalIoTlbFlushes = 80,
+ VpGlobalIoTlbFlushCost = 81,
+ VpLocalIoTlbFlushes = 82,
+ VpLocalIoTlbFlushCost = 83,
+ VpHypercallsForwardedCount = 84,
+ VpHypercallsForwardingTime = 85,
+ VpPageInvalidationsForwardedCount = 86,
+ VpPageInvalidationsForwardingTime = 87,
+ VpControlRegisterAccessesForwardedCount = 88,
+ VpControlRegisterAccessesForwardingTime = 89,
+ VpIoInstructionsForwardedCount = 90,
+ VpIoInstructionsForwardingTime = 91,
+ VpHltInstructionsForwardedCount = 92,
+ VpHltInstructionsForwardingTime = 93,
+ VpMwaitInstructionsForwardedCount = 94,
+ VpMwaitInstructionsForwardingTime = 95,
+ VpCpuidInstructionsForwardedCount = 96,
+ VpCpuidInstructionsForwardingTime = 97,
+ VpMsrAccessesForwardedCount = 98,
+ VpMsrAccessesForwardingTime = 99,
+ VpOtherInterceptsForwardedCount = 100,
+ VpOtherInterceptsForwardingTime = 101,
+ VpExternalInterruptsForwardedCount = 102,
+ VpExternalInterruptsForwardingTime = 103,
+ VpPendingInterruptsForwardedCount = 104,
+ VpPendingInterruptsForwardingTime = 105,
+ VpEmulatedInstructionsForwardedCount = 106,
+ VpEmulatedInstructionsForwardingTime = 107,
+ VpDebugRegisterAccessesForwardedCount = 108,
+ VpDebugRegisterAccessesForwardingTime = 109,
+ VpPageFaultInterceptsForwardedCount = 110,
+ VpPageFaultInterceptsForwardingTime = 111,
+ VpVmclearEmulationCount = 112,
+ VpVmclearEmulationTime = 113,
+ VpVmptrldEmulationCount = 114,
+ VpVmptrldEmulationTime = 115,
+ VpVmptrstEmulationCount = 116,
+ VpVmptrstEmulationTime = 117,
+ VpVmreadEmulationCount = 118,
+ VpVmreadEmulationTime = 119,
+ VpVmwriteEmulationCount = 120,
+ VpVmwriteEmulationTime = 121,
+ VpVmxoffEmulationCount = 122,
+ VpVmxoffEmulationTime = 123,
+ VpVmxonEmulationCount = 124,
+ VpVmxonEmulationTime = 125,
+ VpNestedVMEntriesCount = 126,
+ VpNestedVMEntriesTime = 127,
+ VpNestedSLATSoftPageFaultsCount = 128,
+ VpNestedSLATSoftPageFaultsTime = 129,
+ VpNestedSLATHardPageFaultsCount = 130,
+ VpNestedSLATHardPageFaultsTime = 131,
+ VpInvEptAllContextEmulationCount = 132,
+ VpInvEptAllContextEmulationTime = 133,
+ VpInvEptSingleContextEmulationCount = 134,
+ VpInvEptSingleContextEmulationTime = 135,
+ VpInvVpidAllContextEmulationCount = 136,
+ VpInvVpidAllContextEmulationTime = 137,
+ VpInvVpidSingleContextEmulationCount = 138,
+ VpInvVpidSingleContextEmulationTime = 139,
+ VpInvVpidSingleAddressEmulationCount = 140,
+ VpInvVpidSingleAddressEmulationTime = 141,
+ VpNestedTlbPageTableReclamations = 142,
+ VpNestedTlbPageTableEvictions = 143,
+ VpFlushGuestPhysicalAddressSpaceHypercalls = 144,
+ VpFlushGuestPhysicalAddressListHypercalls = 145,
+ VpPostedInterruptNotifications = 146,
+ VpPostedInterruptScans = 147,
+ VpTotalCoreRunTime = 148,
+ VpMaximumRunTime = 149,
+ VpHwpRequestContextSwitches = 150,
+ VpWaitingForCpuTimeBucket0 = 151,
+ VpWaitingForCpuTimeBucket1 = 152,
+ VpWaitingForCpuTimeBucket2 = 153,
+ VpWaitingForCpuTimeBucket3 = 154,
+ VpWaitingForCpuTimeBucket4 = 155,
+ VpWaitingForCpuTimeBucket5 = 156,
+ VpWaitingForCpuTimeBucket6 = 157,
+ VpVmloadEmulationCount = 158,
+ VpVmloadEmulationTime = 159,
+ VpVmsaveEmulationCount = 160,
+ VpVmsaveEmulationTime = 161,
+ VpGifInstructionEmulationCount = 162,
+ VpGifInstructionEmulationTime = 163,
+ VpEmulatedErrataSvmInstructions = 164,
+ VpPlaceholder1 = 165,
+ VpPlaceholder2 = 166,
+ VpPlaceholder3 = 167,
+ VpPlaceholder4 = 168,
+ VpPlaceholder5 = 169,
+ VpPlaceholder6 = 170,
+ VpPlaceholder7 = 171,
+ VpPlaceholder8 = 172,
+ VpPlaceholder9 = 173,
+ VpPlaceholder10 = 174,
+ VpSchedulingPriority = 175,
+ VpRdpmcInstructionsCount = 176,
+ VpRdpmcInstructionsTime = 177,
+ VpPerfmonPmuMsrAccessesCount = 178,
+ VpPerfmonLbrMsrAccessesCount = 179,
+ VpPerfmonIptMsrAccessesCount = 180,
+ VpPerfmonInterruptCount = 181,
+ VpVtl1DispatchCount = 182,
+ VpVtl2DispatchCount = 183,
+ VpVtl2DispatchBucket0 = 184,
+ VpVtl2DispatchBucket1 = 185,
+ VpVtl2DispatchBucket2 = 186,
+ VpVtl2DispatchBucket3 = 187,
+ VpVtl2DispatchBucket4 = 188,
+ VpVtl2DispatchBucket5 = 189,
+ VpVtl2DispatchBucket6 = 190,
+ VpVtl1RunTime = 191,
+ VpVtl2RunTime = 192,
+ VpIommuHypercalls = 193,
+ VpCpuGroupHypercalls = 194,
+ VpVsmHypercalls = 195,
+ VpEventLogHypercalls = 196,
+ VpDeviceDomainHypercalls = 197,
+ VpDepositHypercalls = 198,
+ VpSvmHypercalls = 199,
+ VpBusLockAcquisitionCount = 200,
+ VpLoadAvg = 201,
+ VpRootDispatchThreadBlocked = 202,
+#elif IS_ENABLED(CONFIG_ARM64)
+ VpSysRegAccessesCount = 9,
+ VpSysRegAccessesTime = 10,
+ VpSmcInstructionsCount = 11,
+ VpSmcInstructionsTime = 12,
+ VpOtherInterceptsCount = 13,
+ VpOtherInterceptsTime = 14,
+ VpExternalInterruptsCount = 15,
+ VpExternalInterruptsTime = 16,
+ VpPendingInterruptsCount = 17,
+ VpPendingInterruptsTime = 18,
+ VpGuestPageTableMaps = 19,
+ VpLargePageTlbFills = 20,
+ VpSmallPageTlbFills = 21,
+ VpReflectedGuestPageFaults = 22,
+ VpMemoryInterceptMessages = 23,
+ VpOtherMessages = 24,
+ VpLogicalProcessorMigrations = 25,
+ VpAddressDomainFlushes = 26,
+ VpAddressSpaceFlushes = 27,
+ VpSyntheticInterrupts = 28,
+ VpVirtualInterrupts = 29,
+ VpApicSelfIpisSent = 30,
+ VpGpaSpaceHypercalls = 31,
+ VpLogicalProcessorHypercalls = 32,
+ VpLongSpinWaitHypercalls = 33,
+ VpOtherHypercalls = 34,
+ VpSyntheticInterruptHypercalls = 35,
+ VpVirtualInterruptHypercalls = 36,
+ VpVirtualMmuHypercalls = 37,
+ VpVirtualProcessorHypercalls = 38,
+ VpHardwareInterrupts = 39,
+ VpNestedPageFaultInterceptsCount = 40,
+ VpNestedPageFaultInterceptsTime = 41,
+ VpLogicalProcessorDispatches = 42,
+ VpWaitingForCpuTime = 43,
+ VpExtendedHypercalls = 44,
+ VpExtendedHypercallInterceptMessages = 45,
+ VpMbecNestedPageTableSwitches = 46,
+ VpOtherReflectedGuestExceptions = 47,
+ VpGlobalIoTlbFlushes = 48,
+ VpGlobalIoTlbFlushCost = 49,
+ VpLocalIoTlbFlushes = 50,
+ VpLocalIoTlbFlushCost = 51,
+ VpFlushGuestPhysicalAddressSpaceHypercalls = 52,
+ VpFlushGuestPhysicalAddressListHypercalls = 53,
+ VpPostedInterruptNotifications = 54,
+ VpPostedInterruptScans = 55,
+ VpTotalCoreRunTime = 56,
+ VpMaximumRunTime = 57,
+ VpWaitingForCpuTimeBucket0 = 58,
+ VpWaitingForCpuTimeBucket1 = 59,
+ VpWaitingForCpuTimeBucket2 = 60,
+ VpWaitingForCpuTimeBucket3 = 61,
+ VpWaitingForCpuTimeBucket4 = 62,
+ VpWaitingForCpuTimeBucket5 = 63,
+ VpWaitingForCpuTimeBucket6 = 64,
+ VpHwpRequestContextSwitches = 65,
+ VpPlaceholder2 = 66,
+ VpPlaceholder3 = 67,
+ VpPlaceholder4 = 68,
+ VpPlaceholder5 = 69,
+ VpPlaceholder6 = 70,
+ VpPlaceholder7 = 71,
+ VpPlaceholder8 = 72,
+ VpContentionTime = 73,
+ VpWakeUpTime = 74,
+ VpSchedulingPriority = 75,
+ VpVtl1DispatchCount = 76,
+ VpVtl2DispatchCount = 77,
+ VpVtl2DispatchBucket0 = 78,
+ VpVtl2DispatchBucket1 = 79,
+ VpVtl2DispatchBucket2 = 80,
+ VpVtl2DispatchBucket3 = 81,
+ VpVtl2DispatchBucket4 = 82,
+ VpVtl2DispatchBucket5 = 83,
+ VpVtl2DispatchBucket6 = 84,
+ VpVtl1RunTime = 85,
+ VpVtl2RunTime = 86,
+ VpIommuHypercalls = 87,
+ VpCpuGroupHypercalls = 88,
+ VpVsmHypercalls = 89,
+ VpEventLogHypercalls = 90,
+ VpDeviceDomainHypercalls = 91,
+ VpDepositHypercalls = 92,
+ VpSvmHypercalls = 93,
+ VpLoadAvg = 94,
+ VpRootDispatchThreadBlocked = 95,
+#endif
+ VpStatsMaxCounter
+};
+
+enum hv_stats_lp_counters { /* HV_CPU_COUNTER */
+ LpGlobalTime = 1,
+ LpTotalRunTime = 2,
+ LpHypervisorRunTime = 3,
+ LpHardwareInterrupts = 4,
+ LpContextSwitches = 5,
+ LpInterProcessorInterrupts = 6,
+ LpSchedulerInterrupts = 7,
+ LpTimerInterrupts = 8,
+ LpInterProcessorInterruptsSent = 9,
+ LpProcessorHalts = 10,
+ LpMonitorTransitionCost = 11,
+ LpContextSwitchTime = 12,
+ LpC1TransitionsCount = 13,
+ LpC1RunTime = 14,
+ LpC2TransitionsCount = 15,
+ LpC2RunTime = 16,
+ LpC3TransitionsCount = 17,
+ LpC3RunTime = 18,
+ LpRootVpIndex = 19,
+ LpIdleSequenceNumber = 20,
+ LpGlobalTscCount = 21,
+ LpActiveTscCount = 22,
+ LpIdleAccumulation = 23,
+ LpReferenceCycleCount0 = 24,
+ LpActualCycleCount0 = 25,
+ LpReferenceCycleCount1 = 26,
+ LpActualCycleCount1 = 27,
+ LpProximityDomainId = 28,
+ LpPostedInterruptNotifications = 29,
+ LpBranchPredictorFlushes = 30,
+#if IS_ENABLED(CONFIG_X86_64)
+ LpL1DataCacheFlushes = 31,
+ LpImmediateL1DataCacheFlushes = 32,
+ LpMbFlushes = 33,
+ LpCounterRefreshSequenceNumber = 34,
+ LpCounterRefreshReferenceTime = 35,
+ LpIdleAccumulationSnapshot = 36,
+ LpActiveTscCountSnapshot = 37,
+ LpHwpRequestContextSwitches = 38,
+ LpPlaceholder1 = 39,
+ LpPlaceholder2 = 40,
+ LpPlaceholder3 = 41,
+ LpPlaceholder4 = 42,
+ LpPlaceholder5 = 43,
+ LpPlaceholder6 = 44,
+ LpPlaceholder7 = 45,
+ LpPlaceholder8 = 46,
+ LpPlaceholder9 = 47,
+ LpPlaceholder10 = 48,
+ LpReserveGroupId = 49,
+ LpRunningPriority = 50,
+ LpPerfmonInterruptCount = 51,
+#elif IS_ENABLED(CONFIG_ARM64)
+ LpCounterRefreshSequenceNumber = 31,
+ LpCounterRefreshReferenceTime = 32,
+ LpIdleAccumulationSnapshot = 33,
+ LpActiveTscCountSnapshot = 34,
+ LpHwpRequestContextSwitches = 35,
+ LpPlaceholder2 = 36,
+ LpPlaceholder3 = 37,
+ LpPlaceholder4 = 38,
+ LpPlaceholder5 = 39,
+ LpPlaceholder6 = 40,
+ LpPlaceholder7 = 41,
+ LpPlaceholder8 = 42,
+ LpPlaceholder9 = 43,
+ LpSchLocalRunListSize = 44,
+ LpReserveGroupId = 45,
+ LpRunningPriority = 46,
+#endif
+ LpStatsMaxCounter
+};
+
+/*
+ * Hypervisor statistics page format
+ */
+struct hv_stats_page {
+ union {
+ u64 hv_cntrs[HvStatsMaxCounter]; /* Hypervisor counters */
+ u64 pt_cntrs[PartitionStatsMaxCounter]; /* Partition counters */
+ u64 vp_cntrs[VpStatsMaxCounter]; /* VP counters */
+ u64 lp_cntrs[LpStatsMaxCounter]; /* LP counters */
+ u8 data[HV_HYP_PAGE_SIZE];
+ };
+} __packed;
+
/* Bits for dirty mask of hv_vp_register_page */
#define HV_X64_REGISTER_CLASS_GENERAL 0
#define HV_X64_REGISTER_CLASS_IP 1
--
2.34.1
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