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HV:Added support to get VM enter and exit information

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profiling_vmenter_handler:Saves vm information

profiling_vmexit_handler: Saves vm information and vm exit reason

Tracked-On: projectacrn#1409
Acked-by: Eddie Dong <eddie.dong@intel.com>
Signed-off-by: Chinthapally, Manisha <manisha.chinthapally@intel.com>
This commit is contained in:
Chinthapally, Manisha 2018-10-22 16:17:14 -07:00 committed by wenlingz
parent fc8f9d792c
commit a7cbee1802
2 changed files with 80 additions and 6 deletions
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61
hypervisor/debug/profiling.c
View File

@ -914,18 +914,71 @@ void profiling_ipi_handler(__unused void *data)
*/
void profiling_vmenter_handler(__unused struct vcpu *vcpu)
{
/* to be implemented */
if (((get_cpu_var(profiling_info.sep_state).pmu_state == PMU_RUNNING) &&
((sep_collection_switch &
(1UL << (uint64_t)VM_SWITCH_TRACING)) > 0UL)) ||
((get_cpu_var(profiling_info.soc_state) == SW_RUNNING) &&
((socwatch_collection_switch &
(1UL << (uint64_t)SOCWATCH_VM_SWITCH_TRACING)) > 0UL))) {
get_cpu_var(profiling_info.vm_info).vmenter_tsc = rdtsc();
}
}
/*
* Save the VCPU info on vmexit
*/
void profiling_vmexit_handler(__unused struct vcpu *vcpu, __unused uint64_t exit_reason)
void profiling_vmexit_handler(struct vcpu *vcpu, uint64_t exit_reason)
{
per_cpu(profiling_info.sep_state, vcpu->pcpu_id).total_vmexit_count++;
if ((get_cpu_var(profiling_info.sep_state).pmu_state == PMU_RUNNING) ||
(get_cpu_var(profiling_info.soc_state) == SW_RUNNING)) {
get_cpu_var(profiling_info.vm_info).vmexit_tsc = rdtsc();
get_cpu_var(profiling_info.vm_info).vmexit_reason = exit_reason;
if (exit_reason == VMX_EXIT_REASON_EXTERNAL_INTERRUPT) {
/* to be implemented */
get_cpu_var(profiling_info.vm_info).external_vector
= (int32_t)(exec_vmread(VMX_EXIT_INT_INFO) & 0xFFUL);
} else {
/* to be implemented */
get_cpu_var(profiling_info.vm_info).external_vector = -1;
}
get_cpu_var(profiling_info.vm_info).guest_rip
= vcpu_get_rip(vcpu);
get_cpu_var(profiling_info.vm_info).guest_rflags
= vcpu_get_rflags(vcpu);
get_cpu_var(profiling_info.vm_info).guest_cs
= exec_vmread64(VMX_GUEST_CS_SEL);
get_cpu_var(profiling_info.vm_info).guest_vm_id = (int32_t)vcpu->vm->vm_id;
/* Generate vmswitch sample */
if (((sep_collection_switch &
(1UL << (uint64_t)VM_SWITCH_TRACING)) > 0UL) ||
((socwatch_collection_switch &
(1UL << (uint64_t)SOCWATCH_VM_SWITCH_TRACING)) > 0UL)) {
get_cpu_var(profiling_info.vm_switch_trace).os_id
= (int32_t)vcpu->vm->vm_id;
get_cpu_var(profiling_info.vm_switch_trace).vm_enter_tsc
= get_cpu_var(profiling_info.vm_info).vmenter_tsc;
get_cpu_var(profiling_info.vm_switch_trace).vm_exit_tsc
= get_cpu_var(profiling_info.vm_info).vmexit_tsc;
get_cpu_var(profiling_info.vm_switch_trace).vm_exit_reason
= exit_reason;
if ((sep_collection_switch &
(1UL << (uint64_t)VM_SWITCH_TRACING)) > 0UL) {
(void)profiling_generate_data(COLLECT_PROFILE_DATA,
VM_SWITCH_TRACING);
}
if ((socwatch_collection_switch &
(1UL << (uint64_t)SOCWATCH_VM_SWITCH_TRACING)) > 0UL) {
(void)profiling_generate_data(COLLECT_POWER_DATA,
SOCWATCH_VM_SWITCH_TRACING);
}
}
}
}

21
hypervisor/include/debug/profiling_internal.h
View File

@ -18,6 +18,7 @@
#define COLLECT_PROFILE_DATA 0
#define COLLECT_POWER_DATA 1
#define SEP_BUF_ENTRY_SIZE 32U
#define SOCWATCH_MSR_OP 100U
enum MSR_CMD_STATUS {
@ -159,6 +160,16 @@ struct vmexit_msr {
uint64_t msr_data;
};
struct guest_vm_info {
uint64_t vmenter_tsc;
uint64_t vmexit_tsc;
uint64_t vmexit_reason;
uint64_t guest_rip;
uint64_t guest_rflags;
uint64_t guest_cs;
int32_t guest_vm_id;
int32_t external_vector;
};
struct sep_state {
sep_pmu_state pmu_state;
@ -201,13 +212,23 @@ struct sep_state {
uint64_t saved_debugctl_value;
} __aligned(8);
struct vm_switch_trace {
uint64_t vm_enter_tsc;
uint64_t vm_exit_tsc;
uint64_t vm_exit_reason;
int32_t os_id;
}__aligned(SEP_BUF_ENTRY_SIZE);
/*
* Wrapper containing SEP sampling/profiling related data structures
*/
struct profiling_info_wrapper {
struct profiling_msr_ops_list *msr_node;
struct sep_state sep_state;
struct guest_vm_info vm_info;
ipi_commands ipi_cmd;
struct vm_switch_trace vm_switch_trace;
socwatch_state soc_state;
struct sw_msr_op_info sw_msr_op_info;
} __aligned(8);