#include <palacios/vmm_timeout.h>
#include <palacios/vmm_options.h>
#include <palacios/vmm_cpu_mapper.h>
+#include <palacios/vmm_direct_paging.h>
+#include <interfaces/vmm_numa.h>
#ifdef V3_CONFIG_SVM
#include <palacios/svm.h>
-
static void init_cpu(void * arg) {
uint32_t cpu_id = (uint32_t)(addr_t)arg;
+ v3_init_fp();
+
#ifdef V3_CONFIG_SVM
if (v3_is_svm_capable()) {
PrintDebug(VM_NONE, VCORE_NONE, "Machine is SVM Capable\n");
PrintError(VM_NONE, VCORE_NONE, "CPU has no virtualization Extensions\n");
break;
}
+
+ v3_deinit_fp();
+
+}
+
+
+static int in_long_mode()
+{
+ uint32_t high, low;
+
+ v3_get_msr(0xc0000080,&high,&low); // EFER
+
+ return ((low & 0x500)== 0x500); // LMA and LME set
}
+
void Init_V3(struct v3_os_hooks * hooks, char * cpu_mask, int num_cpus, char *options) {
int i = 0;
V3_Print(VM_NONE, VCORE_NONE, "V3 Print statement to fix a Kitten page fault bug\n");
+
+
+#ifndef __V3_64BIT__
+#error Palacios does not support compilation for a 32 bit host OS!!!!
+#else
+ if (!in_long_mode()) {
+ PrintError(VM_NONE,VCORE_NONE,"Palacios supports execution only in long mode (64 bit).\n");
+ return;
+ }
+#endif
+
// Set global variables.
os_hooks = hooks;
+ if (num_cpus>V3_CONFIG_MAX_CPUS) {
+ PrintError(VM_NONE,VCORE_NONE, "Requesting as many as %d cpus, but Palacios is compiled for a maximum of %d. Only the first %d cpus will be considered\n", num_cpus, V3_CONFIG_MAX_CPUS, V3_CONFIG_MAX_CPUS);
+ }
+
// Determine the global machine type
v3_mach_type = V3_INVALID_CPU;
// Parse host-os defined options into an easily-accessed format.
v3_parse_options(options);
+ // Memory manager initialization
+ v3_init_mem();
+
// Register all the possible device types
V3_init_devices();
if ((hooks) && (hooks->call_on_cpu)) {
- for (i = 0; i < num_cpus; i++) {
+ for (i = 0; i < num_cpus && i < V3_CONFIG_MAX_CPUS; i++) {
major = i / 8;
minor = i % 8;
void Shutdown_V3() {
int i;
- V3_deinit_devices();
- V3_deinit_shdw_paging();
-
- V3_deinit_extensions();
-
-#ifdef V3_CONFIG_SYMMOD
- V3_deinit_symmod();
-#endif
-
-#ifdef V3_CONFIG_CHECKPOINT
- V3_deinit_checkpoint();
-#endif
+ // Reverse order of Init_V3
+ // bring down CPUs
if ((os_hooks) && (os_hooks->call_on_cpu)) {
for (i = 0; i < V3_CONFIG_MAX_CPUS; i++) {
}
}
+#ifdef V3_CONFIG_CHECKPOINT
+ V3_deinit_checkpoint();
+#endif
+
+#ifdef V3_CONFIG_SYMMOD
+ V3_deinit_symmod();
+#endif
+
+ V3_disable_scheduler();
+
+ V3_disable_cpu_mapper();
+
+ V3_deinit_extensions();
+
+ V3_deinit_scheduling();
+
+ V3_deinit_cpu_mapper();
+
+ V3_deinit_shdw_paging();
+
+ V3_deinit_devices();
+
+ v3_deinit_mem();
+
+ v3_deinit_options();
+
+
}
memset(vm->name, 0, 128);
strncpy(vm->name, name, 127);
+ if(v3_cpu_mapper_register_vm(vm) == -1) {
+
+ PrintError(vm, VCORE_NONE,"Error registering VM with cpu_mapper\n");
+ }
+
/*
* Register this VM with the palacios scheduler. It will ask for admission
* prior to launch.
int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) {
- uint32_t i,j;
+ uint32_t i;
uint8_t * core_mask = (uint8_t *)&cpu_mask; // This is to make future expansion easier
uint32_t avail_cores = 0;
int vcore_id = 0;
-
if (vm->run_state != VM_STOPPED) {
PrintError(vm, VCORE_NONE, "VM has already been launched (state=%d)\n", (int)vm->run_state);
return -1;
}
-
- // Do not run if any core is using shadow paging and we are out of 4 GB bounds
- for (i=0;i<vm->num_cores;i++) {
- if (vm->cores[i].shdw_pg_mode == SHADOW_PAGING) {
- for (j=0;j<vm->mem_map.num_base_regions;j++) {
- if ((vm->mem_map.base_regions[i].host_addr + V3_CONFIG_MEM_BLOCK_SIZE) >= 0x100000000ULL) {
- PrintError(vm, VCORE_NONE, "Base memory region %d exceeds 4 GB boundary with shadow paging enabled on core %d.\n",j, i);
- PrintError(vm, VCORE_NONE, "Any use of non-64 bit mode in the guest is likely to fail in this configuration.\n");
- PrintError(vm, VCORE_NONE, "If you would like to proceed anyway, remove this check and recompile Palacios.\n");
- PrintError(vm, VCORE_NONE, "Alternatively, change this VM to use nested paging.\n");
- return -1;
- }
- }
- }
- }
-
+
/// CHECK IF WE ARE MULTICORE ENABLED....
V3_Print(vm, VCORE_NONE, "V3 -- Starting VM (%u cores)\n", vm->num_cores);
vm->avail_cores = avail_cores;
- if (v3_scheduler_admit_vm(vm) != 0){
- PrintError(vm, VCORE_NONE,"Error admitting VM %s for scheduling", vm->name);
+ if (v3_cpu_mapper_admit_vm(vm,cpu_mask) != 0){
+ PrintError(vm, VCORE_NONE,"Error admitting VM %s for mapping", vm->name);
}
- if (v3_cpu_mapper_admit_vm(vm) != 0){
- PrintError(vm, VCORE_NONE,"Error admitting VM %s for mapping", vm->name);
+ if (v3_scheduler_admit_vm(vm) != 0){
+ PrintError(vm, VCORE_NONE,"Error admitting VM %s for scheduling", vm->name);
}
vm->run_state = VM_RUNNING;
- if(v3_cpu_mapper_register_vm(vm,cpu_mask) == -1) {
-
- PrintError(vm, VCORE_NONE,"Error registering VM with cpu_mapper\n");
- }
-
for (vcore_id = 0; vcore_id < vm->num_cores; vcore_id++) {
PrintDebug(vm, VCORE_NONE, "run: core=%u, func=0x%p, arg=0x%p, name=%s\n",
core->pcpu_id, start_core, core, core->exec_name);
- core->core_run_state = CORE_STOPPED; // core zero will turn itself on
+ if (core->core_run_state==CORE_INVALID) {
+ // launch of a fresh VM
+ core->core_run_state = CORE_STOPPED;
+ // core zero will turn itself on
+ } else {
+ // this is a resume - use whatever its current run_state is
+ }
+
core->core_thread = V3_CREATE_THREAD_ON_CPU(core->pcpu_id, start_core, core, core->exec_name);
if (core->core_thread == NULL) {
return 0;
}
+/* move a memory region to memory with affinity for a specific physical core */
+int v3_move_vm_mem(struct v3_vm_info * vm, void *gpa, int target_cpu) {
+ int old_node;
+ int new_node;
+ struct v3_mem_region *reg;
+ void *new_hpa;
+ int num_pages;
+ void *old_hpa;
+ int i;
+
+ old_node = v3_numa_gpa_to_node(vm,(addr_t)gpa);
+
+ if (old_node<0) {
+ PrintError(vm, VCORE_NONE, "Cannot determine current node of gpa %p\n",gpa);
+ return -1;
+ }
+
+ new_node = v3_numa_cpu_to_node(target_cpu);
+
+ if (new_node<0) {
+ PrintError(vm, VCORE_NONE, "Cannot determine current node of cpu %d\n",target_cpu);
+ return -1;
+ }
+
+ if (new_node==old_node) {
+ PrintDebug(vm, VCORE_NONE, "Affinity is already established - ignoring request\n");
+ return 0;
+ }
+
+ // We are now going to change the universe, so
+ // we'll barrier everyone first
+
+ while (v3_raise_barrier(vm, NULL) == -1);
+
+ // get region
+
+ reg = v3_get_mem_region(vm, V3_MEM_CORE_ANY, (addr_t) gpa);
+ if (!reg) {
+ PrintError(vm, VCORE_NONE, "Attempt to migrate non-existent memory\n");
+ goto out_fail;
+ }
+
+ if (!(reg->flags.base) || !(reg->flags.alloced)) {
+ PrintError(vm, VCORE_NONE, "Attempt to migrate invalid region: base=%d alloced=%d\n", reg->flags.base, reg->flags.alloced);
+ goto out_fail;
+ }
+
+ // we now have the allocated base region corresponding to - and not a copy
+ // we will rewrite this region after moving its contents
+
+ // first, let's double check that we are in fact changing the numa_id...
+
+ if (reg->numa_id==new_node) {
+ PrintDebug(vm, VCORE_NONE, "Affinity for this base region is already established - ignoring...\n");
+ goto out_success;
+ }
+
+ // region uses exclusive addressing [guest_start,guest_end)
+ num_pages = (reg->guest_end-reg->guest_start)/PAGE_SIZE;
+
+ new_hpa = V3_AllocPagesExtended(num_pages,
+ PAGE_SIZE_4KB,
+ new_node,
+ 0); // no constraints given new shadow pager impl
+
+ if (!new_hpa) {
+ PrintError(vm, VCORE_NONE, "Cannot allocate memory for new base region...\n");
+ goto out_fail;
+ }
+
+ // Note, assumes virtual contiguity in the host OS...
+ memcpy(V3_VAddr((void*)new_hpa), V3_VAddr((void*)(reg->host_addr)), num_pages*PAGE_SIZE);
+
+ old_hpa = (void*)(reg->host_addr);
+ old_node = (int)(reg->numa_id);
+
+ reg->host_addr = (addr_t)new_hpa;
+ reg->numa_id = v3_numa_hpa_to_node((addr_t)new_hpa);
+
+ // flush all page tables / kill all humans
+
+ for (i=0;i<vm->num_cores;i++) {
+ if (vm->cores[i].shdw_pg_mode==SHADOW_PAGING) {
+ v3_invalidate_shadow_pts(&(vm->cores[i]));
+ } else if (vm->cores[i].shdw_pg_mode==NESTED_PAGING) {
+ // nested invalidator uses inclusive addressing [start,end], not [start,end)
+ v3_invalidate_nested_addr_range(&(vm->cores[i]),reg->guest_start,reg->guest_end-1,NULL,NULL);
+ } else {
+ PrintError(vm,VCORE_NONE, "Cannot determine how to invalidate paging structures! Reverting to previous region.\n");
+ // We'll restore things...
+ reg->host_addr = (addr_t) old_hpa;
+ reg->numa_id = old_node;
+ V3_FreePages(new_hpa,num_pages);
+ goto out_fail;
+ }
+ }
+
+ // Now the old region can go away...
+ V3_FreePages(old_hpa,num_pages);
+
+ PrintDebug(vm,VCORE_NONE,"Migration of memory complete - new region is %p to %p\n",
+ (void*)(reg->host_addr),(void*)(reg->host_addr+num_pages*PAGE_SIZE-1));
+
+ out_success:
+ v3_lower_barrier(vm);
+ return 0;
+
+
+ out_fail:
+ v3_lower_barrier(vm);
+ return -1;
+}
int v3_stop_vm(struct v3_vm_info * vm) {
+ struct guest_info * running_core;
+
if ((vm->run_state != VM_RUNNING) &&
(vm->run_state != VM_SIMULATING)) {
PrintError(vm, VCORE_NONE,"Tried to stop VM in invalid runstate (%d)\n", vm->run_state);
for (i = 0; i < vm->num_cores; i++) {
if (vm->cores[i].core_run_state != CORE_STOPPED) {
+ running_core = &vm->cores[i];
still_running = 1;
}
}
break;
}
- v3_yield(NULL,-1);
+ v3_scheduler_stop_core(running_core);
}
V3_Print(vm, VCORE_NONE,"VM stopped. Returning\n");
V3_Print(core->vm_info, core, "Simulation callback activated (guest_rip=%p)\n", (void *)core->rip);
while (v3_bitmap_check(timeout_map, core->vcpu_id) == 1) {
+ // We spin here if there is noone to yield to
v3_yield(NULL,-1);
}
if (all_blocked == 1) {
break;
}
-
+
+ // Intentionally spin if there is no one to yield to
v3_yield(NULL,-1);
}
uint32_t i;
uint32_t numcores = core->num_vcores > vm->num_cores ? vm->num_cores : core->num_vcores;
uint32_t numregions = mem->num_regions > vm->mem_map.num_base_regions ? vm->mem_map.num_base_regions : mem->num_regions;
-
+ extern uint64_t v3_mem_block_size;
switch (vm->run_state) {
case VM_INVALID: base->state = V3_VM_INVALID; break;
for (i=0;i<vm->mem_map.num_base_regions;i++) {
mem->region[i].host_paddr = (void*)(vm->mem_map.base_regions[i].host_addr);
- mem->region[i].size = V3_CONFIG_MEM_BLOCK_SIZE;
+ mem->region[i].size = v3_mem_block_size;
}
mem->num_regions=numregions;
// free cores
for (i = 0; i < vm->num_cores; i++) {
+ v3_scheduler_free_core(&(vm->cores[i]));
v3_free_core(&(vm->cores[i]));
}
// free vm
+ v3_scheduler_free_vm(vm);
v3_free_vm_internal(vm);
v3_free_config(vm);
