X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm.c;h=8e45d5b86a8c0de21f595af9d182d6d8087afd2c;hb=ef944e47f418cfbf344757e3fbab5e40927966fe;hp=1203427da7881cc8a5a96d2245512375e51ed8a5;hpb=29056b18227989f85d7cc6ba4cbb3165e78be3b5;p=palacios.git diff --git a/palacios/src/palacios/vmm.c b/palacios/src/palacios/vmm.c index 1203427..8e45d5b 100644 --- a/palacios/src/palacios/vmm.c +++ b/palacios/src/palacios/vmm.c @@ -18,58 +18,221 @@ */ #include -#include -#include #include #include #include #include #include #include +#include +#ifdef CONFIG_SVM +#include +#endif +#ifdef CONFIG_VMX +#include +#endif +#ifdef CONFIG_VNET +#include +#endif -v3_cpu_arch_t v3_cpu_type; +v3_cpu_arch_t v3_cpu_types[CONFIG_MAX_CPUS]; struct v3_os_hooks * os_hooks = NULL; +int v3_dbg_enable = 0; -static struct guest_info * allocate_guest() { - void * info = V3_Malloc(sizeof(struct guest_info)); - memset(info, 0, sizeof(struct guest_info)); - return info; + +static void init_cpu(void * arg) { + uint32_t cpu_id = (uint32_t)(addr_t)arg; + +#ifdef CONFIG_SVM + if (v3_is_svm_capable()) { + PrintDebug("Machine is SVM Capable\n"); + v3_init_svm_cpu(cpu_id); + + } else +#endif +#ifdef CONFIG_VMX + if (v3_is_vmx_capable()) { + PrintDebug("Machine is VMX Capable\n"); + v3_init_vmx_cpu(cpu_id); + + } else +#endif + { + PrintError("CPU has no virtualizationExtensions\n"); + } } -void Init_V3(struct v3_os_hooks * hooks, struct v3_ctrl_ops * vmm_ops) { - +void Init_V3(struct v3_os_hooks * hooks, int num_cpus) { + int i; + + V3_Print("V3 Print statement to fix a Kitten page fault bug\n"); + // Set global variables. os_hooks = hooks; - v3_cpu_type = V3_INVALID_CPU; + + for (i = 0; i < CONFIG_MAX_CPUS; i++) { + v3_cpu_types[i] = V3_INVALID_CPU; + } // Register all the possible device types v3_init_devices(); + // Register all shadow paging handlers + V3_init_shdw_paging(); + + +#ifdef CONFIG_SYMMOD + V3_init_symmod(); +#endif -#ifdef INSTRUMENT_VMM +#ifdef CONFIG_INSTRUMENT_VMM v3_init_instrumentation(); #endif - vmm_ops->allocate_guest = &allocate_guest; - if (v3_is_svm_capable()) { - PrintDebug("Machine is SVM Capable\n"); - v3_init_SVM(vmm_ops); - } else if (v3_is_vmx_capable()) { - PrintDebug("Machine is VMX Capable\n"); - v3_init_vmx(vmm_ops); - } else { - PrintDebug("CPU has no virtualization Extensions\n"); +#ifdef CONFIG_VNET + V3_init_vnet(); +#endif + + if ((hooks) && (hooks->call_on_cpu)) { + + for (i = 0; i < num_cpus; i++) { + + V3_Print("Initializing VMM extensions on cpu %d\n", i); + hooks->call_on_cpu(i, &init_cpu, (void *)(addr_t)i); + } + } +} + + +v3_cpu_arch_t v3_get_cpu_type(int cpu_id) { + return v3_cpu_types[cpu_id]; +} + + +struct v3_vm_info * v3_create_vm(void * cfg) { + struct v3_vm_info * vm = v3_config_guest(cfg); + + if (vm == NULL) { + PrintError("Could not configure guest\n"); + return NULL; + } + + return vm; +} + + +static int start_core(void *p) +{ + struct guest_info * info = (struct guest_info*)p; + + + PrintDebug("core %u: in start_core\n",info->cpu_id); + + // we assume here that the APs are in INIT mode + // and only the BSP is in REAL + // the per-architecture code will rely on this + // assumption + + + switch (v3_cpu_types[info->cpu_id]) { +#ifdef CONFIG_SVM + case V3_SVM_CPU: + case V3_SVM_REV3_CPU: + return v3_start_svm_guest(info); + break; +#endif +#if CONFIG_VMX + case V3_VMX_CPU: + case V3_VMX_EPT_CPU: + return v3_start_vmx_guest(info); + break; +#endif + default: + PrintError("Attempting to enter a guest on an invalid CPU\n"); + return -1; + } + // should not happen + return 0; +} + + +static uint32_t get_next_core(unsigned int cpu_mask, uint32_t last_proc) +{ + uint32_t proc_to_use; + + PrintDebug("In get_next_core cpu_mask=0x%x last_proc=%u\n",cpu_mask,last_proc); + + proc_to_use=(last_proc+1) % 32; // only 32 procs + // This will wrap around, and eventually we can use proc 0, + // since that's clearly available + while (!((cpu_mask >> proc_to_use)&0x1)) { + proc_to_use=(proc_to_use+1)%32; } + return proc_to_use; } +int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) { + uint32_t i; + uint32_t last_proc; + uint32_t proc_to_use; + char tname[16]; + + V3_Print("V3 -- Starting VM (%u cores)\n",vm->num_cores); + + // We assume that we are running on CPU 0 of the underlying system + last_proc=0; + + // We will fork off cores 1..n first, then boot core zero + + // for the AP, we need to create threads + + for (i = 1; i < vm->num_cores; i++) { + if (!os_hooks->start_thread_on_cpu) { + PrintError("Host OS does not support start_thread_on_cpu - FAILING\n"); + return -1; + } + + proc_to_use=get_next_core(cpu_mask,last_proc); + last_proc=proc_to_use; + + // vm->cores[i].cpu_id=i; + // vm->cores[i].physical_cpu_id=proc_to_use; + + PrintDebug("Starting virtual core %u on logical core %u\n",i,proc_to_use); + + sprintf(tname,"core%u",i); + + PrintDebug("run: core=%u, func=0x%p, arg=0x%p, name=%s\n", + proc_to_use, start_core, &(vm->cores[i]), tname); + + // TODO: actually manage these threads instead of just launching them + if (!(os_hooks->start_thread_on_cpu(proc_to_use,start_core,&(vm->cores[i]),tname))) { + PrintError("Thread launch failed\n"); + return -1; + } + } + + // vm->cores[0].cpu_id=0; + // vm->cores[0].physical_cpu_id=0; + + // Finally launch the BSP on core 0 + sprintf(tname,"core%u",0); + if (!os_hooks->start_thread_on_cpu(0,start_core,&(vm->cores[0]),tname)) { + PrintError("Thread launch failed\n"); + return -1; + } + + return 0; + +} #ifdef __V3_32BIT__ @@ -111,11 +274,12 @@ v3_cpu_mode_t v3_get_host_cpu_mode() { } while (0) \ + void v3_yield_cond(struct guest_info * info) { uint64_t cur_cycle; rdtscll(cur_cycle); - if (cur_cycle > (info->yield_start_cycle + info->yield_cycle_period)) { + if (cur_cycle > (info->yield_start_cycle + info->vm_info->yield_cycle_period)) { /* PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n", @@ -126,7 +290,78 @@ void v3_yield_cond(struct guest_info * info) { } } + +/* + * unconditional cpu yield + * if the yielding thread is a guest context, the guest quantum is reset on resumption + * Non guest context threads should call this function with a NULL argument + */ void v3_yield(struct guest_info * info) { V3_Yield(); - rdtscll(info->yield_start_cycle); + + if (info) { + rdtscll(info->yield_start_cycle); + } +} + + + + +void v3_print_cond(const char * fmt, ...) { + if (v3_dbg_enable == 1) { + char buf[2048]; + va_list ap; + + va_start(ap, fmt); + vsnprintf(buf, 2048, fmt, ap); + va_end(ap); + + V3_Print("%s", buf); + } +} + + + + +void v3_interrupt_cpu(struct v3_vm_info * vm, int logical_cpu, int vector) { + extern struct v3_os_hooks * os_hooks; + + if ((os_hooks) && (os_hooks)->interrupt_cpu) { + (os_hooks)->interrupt_cpu(vm, logical_cpu, vector); + } +} + + + +unsigned int v3_get_cpu_id() { + extern struct v3_os_hooks * os_hooks; + unsigned int ret = (unsigned int)-1; + + if ((os_hooks) && (os_hooks)->get_cpu) { + ret = os_hooks->get_cpu(); + } + + return ret; +} + + + +int v3_vm_enter(struct guest_info * info) { + switch (v3_cpu_types[info->cpu_id]) { +#ifdef CONFIG_SVM + case V3_SVM_CPU: + case V3_SVM_REV3_CPU: + return v3_svm_enter(info); + break; +#endif +#if CONFIG_VMX + case V3_VMX_CPU: + case V3_VMX_EPT_CPU: + return v3_vmx_enter(info); + break; +#endif + default: + PrintError("Attemping to enter a guest on an invalid CPU\n"); + return -1; + } }