Author: tychon Date: Fri Apr 13 17:23:05 2018 New Revision: 332479 URL: https://svnweb.freebsd.org/changeset/base/332479
Log: Add SDT probes to vmexit on Intel. Submitted by: domagoj.stolfa_gmail.com Reviewed by: grehan, tychon Sponsored by: DARPA/AFRL Differential Revision: https://reviews.freebsd.org/D14656 Modified: head/sys/amd64/include/vmm.h head/sys/amd64/vmm/intel/vmx.c head/sys/amd64/vmm/vmm.c Modified: head/sys/amd64/include/vmm.h ============================================================================== --- head/sys/amd64/include/vmm.h Fri Apr 13 16:54:49 2018 (r332478) +++ head/sys/amd64/include/vmm.h Fri Apr 13 17:23:05 2018 (r332479) @@ -31,7 +31,12 @@ #ifndef _VMM_H_ #define _VMM_H_ +#include <sys/sdt.h> #include <x86/segments.h> + +#ifdef _KERNEL +SDT_PROVIDER_DECLARE(vmm); +#endif enum vm_suspend_how { VM_SUSPEND_NONE, Modified: head/sys/amd64/vmm/intel/vmx.c ============================================================================== --- head/sys/amd64/vmm/intel/vmx.c Fri Apr 13 16:54:49 2018 (r332478) +++ head/sys/amd64/vmm/intel/vmx.c Fri Apr 13 17:23:05 2018 (r332479) @@ -188,6 +188,82 @@ SYSCTL_UINT(_hw_vmm_vmx, OID_AUTO, vpid_alloc_failed, &vpid_alloc_failed, 0, NULL); /* + * The definitions of SDT probes for VMX. + */ + +SDT_PROBE_DEFINE3(vmm, vmx, exit, entry, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, taskswitch, + "struct vmx *", "int", "struct vm_exit *", "struct vm_task_switch *"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, craccess, + "struct vmx *", "int", "struct vm_exit *", "uint64_t"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, rdmsr, + "struct vmx *", "int", "struct vm_exit *", "uint32_t"); + +SDT_PROBE_DEFINE5(vmm, vmx, exit, wrmsr, + "struct vmx *", "int", "struct vm_exit *", "uint32_t", "uint64_t"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, halt, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, mtrap, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, pause, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, intrwindow, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, interrupt, + "struct vmx *", "int", "struct vm_exit *", "uint32_t"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, nmiwindow, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, inout, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, cpuid, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE5(vmm, vmx, exit, exception, + "struct vmx *", "int", "struct vm_exit *", "uint32_t", "int"); + +SDT_PROBE_DEFINE5(vmm, vmx, exit, nestedfault, + "struct vmx *", "int", "struct vm_exit *", "uint64_t", "uint64_t"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, mmiofault, + "struct vmx *", "int", "struct vm_exit *", "uint64_t"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, eoi, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, apicaccess, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, apicwrite, + "struct vmx *", "int", "struct vm_exit *", "struct vlapic *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, xsetbv, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, monitor, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE3(vmm, vmx, exit, mwait, + "struct vmx *", "int", "struct vm_exit *"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, unknown, + "struct vmx *", "int", "struct vm_exit *", "uint32_t"); + +SDT_PROBE_DEFINE4(vmm, vmx, exit, return, + "struct vmx *", "int", "struct vm_exit *", "int"); + +/* * Use the last page below 4GB as the APIC access address. This address is * occupied by the boot firmware so it is guaranteed that it will not conflict * with a page in system memory. @@ -2118,6 +2194,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ vmexit->exitcode = VM_EXITCODE_BOGUS; vmm_stat_incr(vmx->vm, vcpu, VMEXIT_COUNT, 1); + SDT_PROBE3(vmm, vmx, exit, entry, vmx, vcpu, vmexit); /* * VM-entry failures during or after loading guest state. @@ -2220,6 +2297,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ } } vmexit->exitcode = VM_EXITCODE_TASK_SWITCH; + SDT_PROBE4(vmm, vmx, exit, taskswitch, vmx, vcpu, vmexit, ts); VCPU_CTR4(vmx->vm, vcpu, "task switch reason %d, tss 0x%04x, " "%s errcode 0x%016lx", ts->reason, ts->tsssel, ts->ext ? "external" : "internal", @@ -2227,6 +2305,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ break; case EXIT_REASON_CR_ACCESS: vmm_stat_incr(vmx->vm, vcpu, VMEXIT_CR_ACCESS, 1); + SDT_PROBE4(vmm, vmx, exit, craccess, vmx, vcpu, vmexit, qual); switch (qual & 0xf) { case 0: handled = vmx_emulate_cr0_access(vmx, vcpu, qual); @@ -2244,6 +2323,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ retu = false; ecx = vmxctx->guest_rcx; VCPU_CTR1(vmx->vm, vcpu, "rdmsr 0x%08x", ecx); + SDT_PROBE4(vmm, vmx, exit, rdmsr, vmx, vcpu, vmexit, ecx); error = emulate_rdmsr(vmx, vcpu, ecx, &retu); if (error) { vmexit->exitcode = VM_EXITCODE_RDMSR; @@ -2264,6 +2344,8 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ edx = vmxctx->guest_rdx; VCPU_CTR2(vmx->vm, vcpu, "wrmsr 0x%08x value 0x%016lx", ecx, (uint64_t)edx << 32 | eax); + SDT_PROBE5(vmm, vmx, exit, wrmsr, vmx, vmexit, vcpu, ecx, + (uint64_t)edx << 32 | eax); error = emulate_wrmsr(vmx, vcpu, ecx, (uint64_t)edx << 32 | eax, &retu); if (error) { @@ -2280,6 +2362,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ break; case EXIT_REASON_HLT: vmm_stat_incr(vmx->vm, vcpu, VMEXIT_HLT, 1); + SDT_PROBE3(vmm, vmx, exit, halt, vmx, vcpu, vmexit); vmexit->exitcode = VM_EXITCODE_HLT; vmexit->u.hlt.rflags = vmcs_read(VMCS_GUEST_RFLAGS); if (virtual_interrupt_delivery) @@ -2290,15 +2373,18 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ break; case EXIT_REASON_MTF: vmm_stat_incr(vmx->vm, vcpu, VMEXIT_MTRAP, 1); + SDT_PROBE3(vmm, vmx, exit, mtrap, vmx, vcpu, vmexit); vmexit->exitcode = VM_EXITCODE_MTRAP; vmexit->inst_length = 0; break; case EXIT_REASON_PAUSE: vmm_stat_incr(vmx->vm, vcpu, VMEXIT_PAUSE, 1); + SDT_PROBE3(vmm, vmx, exit, pause, vmx, vcpu, vmexit); vmexit->exitcode = VM_EXITCODE_PAUSE; break; case EXIT_REASON_INTR_WINDOW: vmm_stat_incr(vmx->vm, vcpu, VMEXIT_INTR_WINDOW, 1); + SDT_PROBE3(vmm, vmx, exit, intrwindow, vmx, vcpu, vmexit); vmx_clear_int_window_exiting(vmx, vcpu); return (1); case EXIT_REASON_EXT_INTR: @@ -2312,6 +2398,8 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ * this virtual interrupt during the subsequent VM enter. */ intr_info = vmcs_read(VMCS_EXIT_INTR_INFO); + SDT_PROBE4(vmm, vmx, exit, interrupt, + vmx, vcpu, vmexit, intr_info); /* * XXX: Ignore this exit if VMCS_INTR_VALID is not set. @@ -2331,6 +2419,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ vmm_stat_incr(vmx->vm, vcpu, VMEXIT_EXTINT, 1); return (1); case EXIT_REASON_NMI_WINDOW: + SDT_PROBE3(vmm, vmx, exit, nmiwindow, vmx, vcpu, vmexit); /* Exit to allow the pending virtual NMI to be injected */ if (vm_nmi_pending(vmx->vm, vcpu)) vmx_inject_nmi(vmx, vcpu); @@ -2358,9 +2447,11 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ vis->addrsize = inout_str_addrsize(inst_info); inout_str_seginfo(vmx, vcpu, inst_info, in, vis); } + SDT_PROBE3(vmm, vmx, exit, inout, vmx, vcpu, vmexit); break; case EXIT_REASON_CPUID: vmm_stat_incr(vmx->vm, vcpu, VMEXIT_CPUID, 1); + SDT_PROBE3(vmm, vmx, exit, cpuid, vmx, vcpu, vmexit); handled = vmx_handle_cpuid(vmx->vm, vcpu, vmxctx); break; case EXIT_REASON_EXCEPTION: @@ -2425,6 +2516,8 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ } VCPU_CTR2(vmx->vm, vcpu, "Reflecting exception %d/%#x into " "the guest", intr_vec, errcode); + SDT_PROBE5(vmm, vmx, exit, exception, + vmx, vcpu, vmexit, intr_vec, errcode); error = vm_inject_exception(vmx->vm, vcpu, intr_vec, errcode_valid, errcode, 0); KASSERT(error == 0, ("%s: vm_inject_exception error %d", @@ -2445,9 +2538,13 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ vmexit->u.paging.gpa = gpa; vmexit->u.paging.fault_type = ept_fault_type(qual); vmm_stat_incr(vmx->vm, vcpu, VMEXIT_NESTED_FAULT, 1); + SDT_PROBE5(vmm, vmx, exit, nestedfault, + vmx, vcpu, vmexit, gpa, qual); } else if (ept_emulation_fault(qual)) { vmexit_inst_emul(vmexit, gpa, vmcs_gla()); vmm_stat_incr(vmx->vm, vcpu, VMEXIT_INST_EMUL, 1); + SDT_PROBE4(vmm, vmx, exit, mmiofault, + vmx, vcpu, vmexit, gpa); } /* * If Virtual NMIs control is 1 and the VM-exit is due to an @@ -2464,9 +2561,11 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ case EXIT_REASON_VIRTUALIZED_EOI: vmexit->exitcode = VM_EXITCODE_IOAPIC_EOI; vmexit->u.ioapic_eoi.vector = qual & 0xFF; + SDT_PROBE3(vmm, vmx, exit, eoi, vmx, vcpu, vmexit); vmexit->inst_length = 0; /* trap-like */ break; case EXIT_REASON_APIC_ACCESS: + SDT_PROBE3(vmm, vmx, exit, apicaccess, vmx, vcpu, vmexit); handled = vmx_handle_apic_access(vmx, vcpu, vmexit); break; case EXIT_REASON_APIC_WRITE: @@ -2476,18 +2575,25 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ */ vmexit->inst_length = 0; vlapic = vm_lapic(vmx->vm, vcpu); + SDT_PROBE4(vmm, vmx, exit, apicwrite, + vmx, vcpu, vmexit, vlapic); handled = vmx_handle_apic_write(vmx, vcpu, vlapic, qual); break; case EXIT_REASON_XSETBV: + SDT_PROBE3(vmm, vmx, exit, xsetbv, vmx, vcpu, vmexit); handled = vmx_emulate_xsetbv(vmx, vcpu, vmexit); break; case EXIT_REASON_MONITOR: + SDT_PROBE3(vmm, vmx, exit, monitor, vmx, vcpu, vmexit); vmexit->exitcode = VM_EXITCODE_MONITOR; break; case EXIT_REASON_MWAIT: + SDT_PROBE3(vmm, vmx, exit, mwait, vmx, vcpu, vmexit); vmexit->exitcode = VM_EXITCODE_MWAIT; break; default: + SDT_PROBE4(vmm, vmx, exit, unknown, + vmx, vcpu, vmexit, reason); vmm_stat_incr(vmx->vm, vcpu, VMEXIT_UNKNOWN, 1); break; } @@ -2523,6 +2629,9 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_ */ } } + + SDT_PROBE4(vmm, vmx, exit, return, + vmx, vcpu, vmexit, handled); return (handled); } Modified: head/sys/amd64/vmm/vmm.c ============================================================================== --- head/sys/amd64/vmm/vmm.c Fri Apr 13 16:54:49 2018 (r332478) +++ head/sys/amd64/vmm/vmm.c Fri Apr 13 17:23:05 2018 (r332479) @@ -208,6 +208,8 @@ static struct vmm_ops *ops; #define fpu_start_emulating() load_cr0(rcr0() | CR0_TS) #define fpu_stop_emulating() clts() +SDT_PROVIDER_DEFINE(vmm); + static MALLOC_DEFINE(M_VM, "vm", "vm"); /* statistics */ _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
