X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm.c;h=402cedf5efbb3e4bbd77d5ff3b817e5e70a456ca;hp=7ae2239cfd3ba5cc6e97c14396aa1d803d3ee508;hb=68521eca0f94f8c22aa60e762c83e24beec7233c;hpb=28b1d0ae6db40cb3e1f5a9b3596b625d2f2af0e4 diff --git a/palacios/src/palacios/vmm.c b/palacios/src/palacios/vmm.c index 7ae2239..402cedf 100644 --- a/palacios/src/palacios/vmm.c +++ b/palacios/src/palacios/vmm.c @@ -1,36 +1,288 @@ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2008, Jack Lange + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Jack Lange + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + #include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef CONFIG_SVM #include +#endif +#ifdef CONFIG_VMX #include -#include +#endif + + +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 virtualization Extensions\n"); + } +} + + + +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"); -uint_t vmm_cpu_type; + // Set global variables. + os_hooks = hooks; + for (i = 0; i < CONFIG_MAX_CPUS; i++) { + v3_cpu_types[i] = V3_INVALID_CPU; + } + // Register all the possible device types + v3_init_devices(); +#ifdef INSTRUMENT_VMM + v3_init_instrumentation(); +#endif -struct vmm_os_hooks * os_hooks = NULL; + 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); + } + } + +#ifdef CONFIG_VNET + v3_init_vnet(); +#endif +} + + +v3_cpu_arch_t v3_get_cpu_type(int cpu_id) { + return v3_cpu_types[cpu_id]; +} + + +struct guest_info * v3_create_vm(void * cfg) { + struct guest_info * info = allocate_guest(); + + if (!info) { + PrintError("Could not allocate Guest\n"); + return NULL; + } + + if (v3_config_guest(info, cfg) == -1) { + PrintError("Could not configure guest\n"); + return NULL; + } + + return info; +} + + +int v3_start_vm(struct guest_info * info, unsigned int cpu_mask) { + + info->cpu_id = v3_get_cpu_id(); + + V3_Print("V3 -- Starting VM\n"); + + 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("Attemping to enter a guest on an invalid CPU\n"); + return -1; + } + + return 0; +} +#ifdef __V3_32BIT__ +v3_cpu_mode_t v3_get_host_cpu_mode() { + uint32_t cr4_val; + struct cr4_32 * cr4; -void Init_VMM(struct vmm_os_hooks * hooks, struct vmm_ctrl_ops * vmm_ops) { - vmm_cpu_type = VMM_INVALID_CPU; + __asm__ ( + "movl %%cr4, %0; " + : "=r"(cr4_val) + ); - os_hooks = hooks; + + cr4 = (struct cr4_32 *)&(cr4_val); + if (cr4->pae == 1) { + return PROTECTED_PAE; + } else { + return PROTECTED; + } +} + +#elif __V3_64BIT__ + +v3_cpu_mode_t v3_get_host_cpu_mode() { + return LONG; +} + +#endif + + +#define V3_Yield(addr) \ + do { \ + extern struct v3_os_hooks * os_hooks; \ + if ((os_hooks) && (os_hooks)->yield_cpu) { \ + (os_hooks)->yield_cpu(); \ + } \ + } 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)) { + + /* + PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n", + (void *)cur_cycle, (void *)info->yield_start_cycle, (void *)info->yield_cycle_period); + */ + V3_Yield(); + rdtscll(info->yield_start_cycle); + } +} + + +/* + * 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(); + + 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 guest_info * info, int logical_cpu) { + extern struct v3_os_hooks * os_hooks; + + if ((os_hooks) && (os_hooks)->interrupt_cpu) { + (os_hooks)->interrupt_cpu(info, logical_cpu); + } +} + + + +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; +} - if (is_svm_capable()) { - vmm_cpu_type = VMM_SVM_CPU; - PrintDebug("Machine is SVM Capable\n"); - Init_SVM(vmm_ops); - /* - } else if (is_vmx_capable()) { - vmm_cpu_type = VMM_VMX_CPU; - PrintDebug("Machine is VMX Capable\n"); - //Init_VMX();*/ - } else { - PrintDebug("CPU has no virtualization Extensions\n"); - } +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; + } }