#include <palacios/vmm.h>
#include <palacios/vmcs.h>
#include <palacios/vmx_lowlevel.h>
+#include <palacios/vmx_io.h>
+#include <palacios/vmm_cpuid.h>
+
+#include <palacios/vmx.h>
+#include <palacios/vmm_ctrl_regs.h>
+#include <palacios/vmm_lowlevel.h>
+#include <palacios/vmx_ctrl_regs.h>
+#include <palacios/vmx_assist.h>
+#include <palacios/vmm_halt.h>
+
+#ifdef CONFIG_TELEMETRY
+#include <palacios/vmm_telemetry.h>
+#endif
+
-static int inline check_vmcs_write(vmcs_field_t field, addr_t val)
-{
- int ret = 0;
- ret = vmcs_write(field,val);
- if (ret != VMX_SUCCESS) {
- PrintError("VMWRITE error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
- return 1;
+/* At this point the GPRs are already copied into the guest_info state */
+int v3_handle_vmx_exit(struct guest_info * info, struct vmx_exit_info * exit_info) {
+ struct vmx_data * vmx_info = (struct vmx_data *)(info->vmm_data);
+
+ /*
+ PrintError("Handling VMEXIT: %s (%u), %lu (0x%lx)\n",
+ v3_vmx_exit_code_to_str(exit_info->exit_reason),
+ exit_info->exit_reason,
+ exit_info->exit_qual, exit_info->exit_qual);
+
+ v3_print_vmcs();
+ */
+#ifdef CONFIG_TELEMETRY
+ if (info->enable_telemetry) {
+ v3_telemetry_start_exit(info);
}
+#endif
- return 0;
-}
+ switch (exit_info->exit_reason) {
+ case VMEXIT_INFO_EXCEPTION_OR_NMI: {
+ pf_error_t error_code = *(pf_error_t *)&(exit_info->int_err);
-static int inline check_vmcs_read(vmcs_field_t field, void * val)
-{
- int ret = 0;
- ret = vmcs_read(field,val);
- if(ret != VMX_SUCCESS) {
- PrintError("VMREAD error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
- return 1;
+ // JRL: Change "0x0e" to a macro value
+ if ((uint8_t)exit_info->int_info == 0x0e) {
+#ifdef CONFIG_DEBUG_SHADOW_PAGING
+ PrintDebug("Page Fault at %p error_code=%x\n", (void *)exit_info->exit_qual, *(uint32_t *)&error_code);
+#endif
+
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ if (v3_handle_shadow_pagefault(info, (addr_t)exit_info->exit_qual, error_code) == -1) {
+ PrintError("Error handling shadow page fault\n");
+ return -1;
+ }
+ } else {
+ PrintError("Page fault in unimplemented paging mode\n");
+ return -1;
+ }
+ } else {
+ PrintError("Unknown exception: 0x%x\n", (uint8_t)exit_info->int_info);
+ v3_print_GPRs(info);
+ return -1;
+ }
+ break;
+ }
+
+ case VMEXIT_INVLPG:
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ if (v3_handle_shadow_invlpg(info) == -1) {
+ PrintError("Error handling INVLPG\n");
+ return -1;
+ }
+ }
+
+ break;
+ case VMEXIT_CPUID:
+ if (v3_handle_cpuid(info) == -1) {
+ PrintError("Error Handling CPUID instruction\n");
+ return -1;
+ }
+
+ break;
+ case VMEXIT_RDMSR:
+ if (v3_handle_msr_read(info) == -1) {
+ PrintError("Error handling MSR Read\n");
+ return -1;
+ }
+
+ break;
+ case VMEXIT_WRMSR:
+ if (v3_handle_msr_write(info) == -1) {
+ PrintError("Error handling MSR Write\n");
+ return -1;
+ }
+
+ break;
+ case VMEXIT_VMCALL:
+ /*
+ * Hypercall
+ */
+
+ // VMCALL is a 3 byte op
+ // We do this early because some hypercalls can change the rip...
+ info->rip += 3;
+
+ if (v3_handle_hypercall(info) == -1) {
+ return -1;
+ }
+ break;
+ case VMEXIT_IO_INSTR: {
+ struct vmx_exit_io_qual * io_qual = (struct vmx_exit_io_qual *)&(exit_info->exit_qual);
+
+ if (io_qual->dir == 0) {
+ if (io_qual->string) {
+ if (v3_handle_vmx_io_outs(info) == -1) {
+ PrintError("Error in outs IO handler\n");
+ return -1;
+ }
+ } else {
+ if (v3_handle_vmx_io_out(info) == -1) {
+ PrintError("Error in out IO handler\n");
+ return -1;
+ }
+ }
+ } else {
+ if (io_qual->string) {
+ if(v3_handle_vmx_io_ins(info) == -1) {
+ PrintError("Error in ins IO handler\n");
+ return -1;
+ }
+ } else {
+ if (v3_handle_vmx_io_in(info) == -1) {
+ PrintError("Error in in IO handler\n");
+ return -1;
+ }
+ }
+ }
+ break;
+ }
+ case VMEXIT_CR_REG_ACCESSES: {
+ struct vmx_exit_cr_qual * cr_qual = (struct vmx_exit_cr_qual *)&(exit_info->exit_qual);
+
+ // PrintDebug("Control register: %d\n", cr_qual->access_type);
+ switch(cr_qual->cr_id) {
+ case 0:
+ //PrintDebug("Handling CR0 Access\n");
+ if (v3_vmx_handle_cr0_access(info, cr_qual, exit_info) == -1) {
+ PrintError("Error in CR0 access handler\n");
+ return -1;
+ }
+ break;
+ case 3:
+ //PrintDebug("Handling CR3 Access\n");
+ if (v3_vmx_handle_cr3_access(info, cr_qual) == -1) {
+ PrintError("Error in CR3 access handler\n");
+ return -1;
+ }
+ break;
+ default:
+ PrintError("Unhandled CR access: %d\n", cr_qual->cr_id);
+ return -1;
+ }
+
+ info->rip += exit_info->instr_len;
+
+ break;
+ }
+ case VMEXIT_HLT:
+ PrintDebug("Guest halted\n");
+
+ if (v3_handle_halt(info) == -1) {
+ PrintError("Error handling halt instruction\n");
+ return -1;
+ }
+
+ break;
+ case VMEXIT_PAUSE:
+ // Handled as NOP
+ info->rip += 2;
+
+ break;
+ case VMEXIT_EXTERNAL_INTR:
+ // Interrupts are handled outside switch
+ break;
+ case VMEXIT_INTR_WINDOW:
+
+ vmcs_read(VMCS_PROC_CTRLS, &(vmx_info->pri_proc_ctrls.value));
+ vmx_info->pri_proc_ctrls.int_wndw_exit = 0;
+ vmcs_write(VMCS_PROC_CTRLS, vmx_info->pri_proc_ctrls.value);
+
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ PrintDebug("Interrupts available again! (RIP=%llx)\n", info->rip);
+#endif
+
+ break;
+ default:
+ PrintError("Unhandled VMEXIT: %s (%u), %lu (0x%lx)\n",
+ v3_vmx_exit_code_to_str(exit_info->exit_reason),
+ exit_info->exit_reason,
+ exit_info->exit_qual, exit_info->exit_qual);
+ return -1;
+ }
+
+#ifdef CONFIG_TELEMETRY
+ if (info->enable_telemetry) {
+ v3_telemetry_end_exit(info, exit_info->exit_reason);
}
+#endif
return 0;
}
-int v3_handle_vmx_exit(struct v3_gprs * gprs)
-{
- uint32_t exit_reason;
- ulong_t exit_qual;
+static const char VMEXIT_INFO_EXCEPTION_OR_NMI_STR[] = "VMEXIT_INFO_EXCEPTION_OR_NMI";
+static const char VMEXIT_EXTERNAL_INTR_STR[] = "VMEXIT_EXTERNAL_INTR";
+static const char VMEXIT_TRIPLE_FAULT_STR[] = "VMEXIT_TRIPLE_FAULT";
+static const char VMEXIT_INIT_SIGNAL_STR[] = "VMEXIT_INIT_SIGNAL";
+static const char VMEXIT_STARTUP_IPI_STR[] = "VMEXIT_STARTUP_IPI";
+static const char VMEXIT_IO_SMI_STR[] = "VMEXIT_IO_SMI";
+static const char VMEXIT_OTHER_SMI_STR[] = "VMEXIT_OTHER_SMI";
+static const char VMEXIT_INTR_WINDOW_STR[] = "VMEXIT_INTR_WINDOW";
+static const char VMEXIT_NMI_WINDOW_STR[] = "VMEXIT_NMI_WINDOW";
+static const char VMEXIT_TASK_SWITCH_STR[] = "VMEXIT_TASK_SWITCH";
+static const char VMEXIT_CPUID_STR[] = "VMEXIT_CPUID";
+static const char VMEXIT_HLT_STR[] = "VMEXIT_HLT";
+static const char VMEXIT_INVD_STR[] = "VMEXIT_INVD";
+static const char VMEXIT_INVLPG_STR[] = "VMEXIT_INVLPG";
+static const char VMEXIT_RDPMC_STR[] = "VMEXIT_RDPMC";
+static const char VMEXIT_RDTSC_STR[] = "VMEXIT_RDTSC";
+static const char VMEXIT_RSM_STR[] = "VMEXIT_RSM";
+static const char VMEXIT_VMCALL_STR[] = "VMEXIT_VMCALL";
+static const char VMEXIT_VMCLEAR_STR[] = "VMEXIT_VMCLEAR";
+static const char VMEXIT_VMLAUNCH_STR[] = "VMEXIT_VMLAUNCH";
+static const char VMEXIT_VMPTRLD_STR[] = "VMEXIT_VMPTRLD";
+static const char VMEXIT_VMPTRST_STR[] = "VMEXIT_VMPTRST";
+static const char VMEXIT_VMREAD_STR[] = "VMEXIT_VMREAD";
+static const char VMEXIT_VMRESUME_STR[] = "VMEXIT_VMRESUME";
+static const char VMEXIT_VMWRITE_STR[] = "VMEXIT_VMWRITE";
+static const char VMEXIT_VMXOFF_STR[] = "VMEXIT_VMXOFF";
+static const char VMEXIT_VMXON_STR[] = "VMEXIT_VMXON";
+static const char VMEXIT_CR_REG_ACCESSES_STR[] = "VMEXIT_CR_REG_ACCESSES";
+static const char VMEXIT_MOV_DR_STR[] = "VMEXIT_MOV_DR";
+static const char VMEXIT_IO_INSTR_STR[] = "VMEXIT_IO_INSTR";
+static const char VMEXIT_RDMSR_STR[] = "VMEXIT_RDMSR";
+static const char VMEXIT_WRMSR_STR[] = "VMEXIT_WRMSR";
+static const char VMEXIT_ENTRY_FAIL_INVALID_GUEST_STATE_STR[] = "VMEXIT_ENTRY_FAIL_INVALID_GUEST_STATE";
+static const char VMEXIT_ENTRY_FAIL_MSR_LOAD_STR[] = "VMEXIT_ENTRY_FAIL_MSR_LOAD";
+static const char VMEXIT_MWAIT_STR[] = "VMEXIT_MWAIT";
+static const char VMEXIT_MONITOR_STR[] = "VMEXIT_MONITOR";
+static const char VMEXIT_PAUSE_STR[] = "VMEXIT_PAUSE";
+static const char VMEXIT_ENTRY_FAILURE_MACHINE_CHECK_STR[] = "VMEXIT_ENTRY_FAILURE_MACHINE_CHECK";
+static const char VMEXIT_TPR_BELOW_THRESHOLD_STR[] = "VMEXIT_TPR_BELOW_THRESHOLD";
+static const char VMEXIT_APIC_STR[] = "VMEXIT_APIC";
+static const char VMEXIT_GDTR_IDTR_STR[] = "VMEXIT_GDTR_IDTR";
+static const char VMEXIT_LDTR_TR_STR[] = "VMEXIT_LDTR_TR";
+static const char VMEXIT_EPT_VIOLATION_STR[] = "VMEXIT_EPT_VIOLATION";
+static const char VMEXIT_EPT_CONFIG_STR[] = "VMEXIT_EPT_CONFIG";
+static const char VMEXIT_INVEPT_STR[] = "VMEXIT_INVEPT";
+static const char VMEXIT_RDTSCP_STR[] = "VMEXIT_RDTSCP";
+static const char VMEXIT_EXPIRED_PREEMPT_TIMER_STR[] = "VMEXIT_EXPIRED_PREEMPT_TIMER";
+static const char VMEXIT_INVVPID_STR[] = "VMEXIT_INVVPID";
+static const char VMEXIT_WBINVD_STR[] = "VMEXIT_WBINVD";
+static const char VMEXIT_XSETBV_STR[] = "VMEXIT_XSETBV";
- check_vmcs_read(VMCS_EXIT_REASON, &exit_reason);
- check_vmcs_read(VMCS_EXIT_QUAL, &exit_qual);
- PrintDebug("VMX Exit taken, id-qual: %x-%ld\n", exit_reason, exit_qual);
- return -1;
+const char * v3_vmx_exit_code_to_str(vmx_exit_t exit)
+{
+ switch(exit) {
+ case VMEXIT_INFO_EXCEPTION_OR_NMI:
+ return VMEXIT_INFO_EXCEPTION_OR_NMI_STR;
+ case VMEXIT_EXTERNAL_INTR:
+ return VMEXIT_EXTERNAL_INTR_STR;
+ case VMEXIT_TRIPLE_FAULT:
+ return VMEXIT_TRIPLE_FAULT_STR;
+ case VMEXIT_INIT_SIGNAL:
+ return VMEXIT_INIT_SIGNAL_STR;
+ case VMEXIT_STARTUP_IPI:
+ return VMEXIT_STARTUP_IPI_STR;
+ case VMEXIT_IO_SMI:
+ return VMEXIT_IO_SMI_STR;
+ case VMEXIT_OTHER_SMI:
+ return VMEXIT_OTHER_SMI_STR;
+ case VMEXIT_INTR_WINDOW:
+ return VMEXIT_INTR_WINDOW_STR;
+ case VMEXIT_NMI_WINDOW:
+ return VMEXIT_NMI_WINDOW_STR;
+ case VMEXIT_TASK_SWITCH:
+ return VMEXIT_TASK_SWITCH_STR;
+ case VMEXIT_CPUID:
+ return VMEXIT_CPUID_STR;
+ case VMEXIT_HLT:
+ return VMEXIT_HLT_STR;
+ case VMEXIT_INVD:
+ return VMEXIT_INVD_STR;
+ case VMEXIT_INVLPG:
+ return VMEXIT_INVLPG_STR;
+ case VMEXIT_RDPMC:
+ return VMEXIT_RDPMC_STR;
+ case VMEXIT_RDTSC:
+ return VMEXIT_RDTSC_STR;
+ case VMEXIT_RSM:
+ return VMEXIT_RSM_STR;
+ case VMEXIT_VMCALL:
+ return VMEXIT_VMCALL_STR;
+ case VMEXIT_VMCLEAR:
+ return VMEXIT_VMCLEAR_STR;
+ case VMEXIT_VMLAUNCH:
+ return VMEXIT_VMLAUNCH_STR;
+ case VMEXIT_VMPTRLD:
+ return VMEXIT_VMPTRLD_STR;
+ case VMEXIT_VMPTRST:
+ return VMEXIT_VMPTRST_STR;
+ case VMEXIT_VMREAD:
+ return VMEXIT_VMREAD_STR;
+ case VMEXIT_VMRESUME:
+ return VMEXIT_VMRESUME_STR;
+ case VMEXIT_VMWRITE:
+ return VMEXIT_VMWRITE_STR;
+ case VMEXIT_VMXOFF:
+ return VMEXIT_VMXOFF_STR;
+ case VMEXIT_VMXON:
+ return VMEXIT_VMXON_STR;
+ case VMEXIT_CR_REG_ACCESSES:
+ return VMEXIT_CR_REG_ACCESSES_STR;
+ case VMEXIT_MOV_DR:
+ return VMEXIT_MOV_DR_STR;
+ case VMEXIT_IO_INSTR:
+ return VMEXIT_IO_INSTR_STR;
+ case VMEXIT_RDMSR:
+ return VMEXIT_RDMSR_STR;
+ case VMEXIT_WRMSR:
+ return VMEXIT_WRMSR_STR;
+ case VMEXIT_ENTRY_FAIL_INVALID_GUEST_STATE:
+ return VMEXIT_ENTRY_FAIL_INVALID_GUEST_STATE_STR;
+ case VMEXIT_ENTRY_FAIL_MSR_LOAD:
+ return VMEXIT_ENTRY_FAIL_MSR_LOAD_STR;
+ case VMEXIT_MWAIT:
+ return VMEXIT_MWAIT_STR;
+ case VMEXIT_MONITOR:
+ return VMEXIT_MONITOR_STR;
+ case VMEXIT_PAUSE:
+ return VMEXIT_PAUSE_STR;
+ case VMEXIT_ENTRY_FAILURE_MACHINE_CHECK:
+ return VMEXIT_ENTRY_FAILURE_MACHINE_CHECK_STR;
+ case VMEXIT_TPR_BELOW_THRESHOLD:
+ return VMEXIT_TPR_BELOW_THRESHOLD_STR;
+ case VMEXIT_APIC:
+ return VMEXIT_APIC_STR;
+ case VMEXIT_GDTR_IDTR:
+ return VMEXIT_GDTR_IDTR_STR;
+ case VMEXIT_LDTR_TR:
+ return VMEXIT_LDTR_TR_STR;
+ case VMEXIT_EPT_VIOLATION:
+ return VMEXIT_EPT_VIOLATION_STR;
+ case VMEXIT_EPT_CONFIG:
+ return VMEXIT_EPT_CONFIG_STR;
+ case VMEXIT_INVEPT:
+ return VMEXIT_INVEPT_STR;
+ case VMEXIT_RDTSCP:
+ return VMEXIT_RDTSCP_STR;
+ case VMEXIT_EXPIRED_PREEMPT_TIMER:
+ return VMEXIT_EXPIRED_PREEMPT_TIMER_STR;
+ case VMEXIT_INVVPID:
+ return VMEXIT_INVVPID_STR;
+ case VMEXIT_WBINVD:
+ return VMEXIT_WBINVD_STR;
+ case VMEXIT_XSETBV:
+ return VMEXIT_XSETBV_STR;
+ }
+ return NULL;
}
+
