X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmx.c;h=c7728a55049f5b76fb356498f64582d5bf098e48;hb=8e9c13c41b0244a8d0029e837a623591a22c5879;hp=4a7a6e9eeb19351dd620a97b0ba902bca34fb55e;hpb=94f67717b6461df514dc225ed84f03b44c44061b;p=palacios-OLD.git diff --git a/palacios/src/palacios/vmx.c b/palacios/src/palacios/vmx.c index 4a7a6e9..c7728a5 100644 --- a/palacios/src/palacios/vmx.c +++ b/palacios/src/palacios/vmx.c @@ -47,7 +47,6 @@ static struct vmx_hw_info hw_info; extern v3_cpu_arch_t v3_cpu_types[]; -static addr_t active_vmcs_ptrs[V3_CONFIG_MAX_CPUS] = { [0 ... V3_CONFIG_MAX_CPUS - 1] = 0}; static addr_t host_vmcs_ptrs[V3_CONFIG_MAX_CPUS] = { [0 ... V3_CONFIG_MAX_CPUS - 1] = 0}; extern int v3_vmx_launch(struct v3_gprs * vm_regs, struct guest_info * info, struct v3_ctrl_regs * ctrl_regs); @@ -106,7 +105,6 @@ static int init_vmcs_bios(struct guest_info * core, struct vmx_data * vmx_state) PrintDebug("Loading VMCS\n"); vmx_ret = vmcs_load(vmx_state->vmcs_ptr_phys); - active_vmcs_ptrs[V3_Get_CPU()] = vmx_state->vmcs_ptr_phys; vmx_state->state = VMX_UNLAUNCHED; if (vmx_ret != VMX_SUCCESS) { @@ -214,23 +212,25 @@ static int init_vmcs_bios(struct guest_info * core, struct vmx_data * vmx_state) #ifdef __V3_64BIT__ + // Ensure host runs in 64-bit mode at each VM EXIT vmx_state->exit_ctrls.host_64_on = 1; #endif - - /* Not sure how exactly to handle this... */ + // Hook all accesses to EFER register v3_hook_msr(core->vm_info, EFER_MSR, &v3_handle_efer_read, &v3_handle_efer_write, core); - // Or is it this??? - vmx_state->entry_ctrls.ld_efer = 1; + // Restore host's EFER register on each VM EXIT vmx_state->exit_ctrls.ld_efer = 1; + + // Save/restore guest's EFER register to/from VMCS on VM EXIT/ENTRY vmx_state->exit_ctrls.save_efer = 1; - /* *** */ + vmx_state->entry_ctrls.ld_efer = 1; - vmx_ret |= check_vmcs_write(VMCS_CR4_MASK, CR4_VMXE); + // Cause VM_EXIT whenever CR4.VMXE or CR4.PAE bits are written + vmx_ret |= check_vmcs_write(VMCS_CR4_MASK, CR4_VMXE | CR4_PAE); /* Setup paging */ @@ -264,7 +264,7 @@ static int init_vmcs_bios(struct guest_info * core, struct vmx_data * vmx_state) v3_vmxassist_init(core, vmx_state); } else if ((core->shdw_pg_mode == NESTED_PAGING) && - (v3_cpu_types[core->cpu_id] == V3_VMX_EPT_CPU)) { + (v3_cpu_types[core->pcpu_id] == V3_VMX_EPT_CPU)) { #define CR0_PE 0x00000001 #define CR0_PG 0x80000000 @@ -297,7 +297,7 @@ static int init_vmcs_bios(struct guest_info * core, struct vmx_data * vmx_state) } } else if ((core->shdw_pg_mode == NESTED_PAGING) && - (v3_cpu_types[core->cpu_id] == V3_VMX_EPT_UG_CPU)) { + (v3_cpu_types[core->pcpu_id] == V3_VMX_EPT_UG_CPU)) { int i = 0; // For now we will assume that unrestricted guest mode is assured w/ EPT @@ -538,6 +538,9 @@ int v3_init_vmx_vmcs(struct guest_info * core, v3_vm_class_t vm_class) { return -1; } + PrintDebug("Serializing VMCS: %p\n", (void *)vmx_state->vmcs_ptr_phys); + vmx_ret = vmcs_clear(vmx_state->vmcs_ptr_phys); + return 0; } @@ -745,19 +748,19 @@ int v3_vmx_enter(struct guest_info * info) { // Perform any additional yielding needed for time adjustment v3_adjust_time(info); - // Update timer devices prior to entering VM. - v3_update_timers(info); - // disable global interrupts for vm state transition v3_disable_ints(); + // Update timer devices late after being in the VM so that as much + // of hte time in the VM is accounted for as possible. Also do it before + // updating IRQ entry state so that any interrupts the timers raise get + // handled on the next VM entry. Must be done with interrupts disabled. + v3_update_timers(info); - if (active_vmcs_ptrs[V3_Get_CPU()] != vmx_info->vmcs_ptr_phys) { + if (vmcs_store() != vmx_info->vmcs_ptr_phys) { vmcs_load(vmx_info->vmcs_ptr_phys); - active_vmcs_ptrs[V3_Get_CPU()] = vmx_info->vmcs_ptr_phys; } - v3_vmx_restore_vmcs(info); @@ -783,6 +786,31 @@ int v3_vmx_enter(struct guest_info * info) { check_vmcs_write(VMCS_TSC_OFFSET_HIGH, tsc_offset_high); check_vmcs_write(VMCS_TSC_OFFSET, tsc_offset_low); + + /* determine if we need to move to a different physical core */ + if(info->core_move_state == CORE_MOVE_PENDING) { + vmcs_clear(vmx_info->vmcs_ptr_phys); + + v3_enable_ints(); + + if(V3_MOVE_THREAD_TO_CPU(info->target_pcpu_id, info->core_thread) != 0){ + PrintError("Failed to move vcore %d to CPU %d\n", info->vcpu_id, info->target_pcpu_id); + } else { + info->pcpu_id = info->target_pcpu_id; + PrintDebug("Core move done, vcore %d is running on CPU %d now\n", info->vcpu_id, V3_Get_CPU()); + } + + /* disable global interrupts, + * NOTE now it is being running on a different CPU + */ + v3_disable_ints(); + + vmcs_load(vmx_info->vmcs_ptr_phys); + vmx_info->state = VMX_UNLAUNCHED; + info->core_move_state= CORE_MOVE_DONE; + } + + if (v3_update_vmcs_host_state(info)) { v3_enable_ints(); PrintError("Could not write host state\n"); @@ -842,7 +870,6 @@ int v3_vmx_enter(struct guest_info * info) { exit_log[info->num_exits % 10] = exit_info; - #ifdef V3_CONFIG_SYMCALL if (info->sym_core_state.symcall_state.sym_call_active == 0) { update_irq_exit_state(info); @@ -879,30 +906,30 @@ int v3_vmx_enter(struct guest_info * info) { int v3_start_vmx_guest(struct guest_info * info) { - PrintDebug("Starting VMX core %u\n", info->cpu_id); + PrintDebug("Starting VMX core %u\n", info->vcpu_id); - if (info->cpu_id == 0) { + if (info->vcpu_id == 0) { info->core_run_state = CORE_RUNNING; info->vm_info->run_state = VM_RUNNING; } else { - PrintDebug("VMX core %u: Waiting for core initialization\n", info->cpu_id); + PrintDebug("VMX core %u: Waiting for core initialization\n", info->vcpu_id); while (info->core_run_state == CORE_STOPPED) { v3_yield(info); - //PrintDebug("VMX core %u: still waiting for INIT\n",info->cpu_id); + //PrintDebug("VMX core %u: still waiting for INIT\n",info->vcpu_id); } - PrintDebug("VMX core %u initialized\n", info->cpu_id); + PrintDebug("VMX core %u initialized\n", info->vcpu_id); } PrintDebug("VMX core %u: I am starting at CS=0x%x (base=0x%p, limit=0x%x), RIP=0x%p\n", - info->cpu_id, info->segments.cs.selector, (void *)(info->segments.cs.base), + info->vcpu_id, info->segments.cs.selector, (void *)(info->segments.cs.base), info->segments.cs.limit, (void *)(info->rip)); - PrintDebug("VMX core %u: Launching VMX VM\n", info->cpu_id); + PrintDebug("VMX core %u: Launching VMX VM on logical core %u\n", info->vcpu_id, info->pcpu_id); v3_start_time(info); @@ -970,7 +997,23 @@ int v3_is_vmx_capable() { } +int v3_reset_vmx_vm_core(struct guest_info * core, addr_t rip) { + // init vmcs bios + + if ((core->shdw_pg_mode == NESTED_PAGING) && + (v3_cpu_types[core->pcpu_id] == V3_VMX_EPT_UG_CPU)) { + // easy + core->rip = 0; + core->segments.cs.selector = rip << 8; + core->segments.cs.limit = 0xffff; + core->segments.cs.base = rip << 12; + } else { + core->vm_regs.rdx = core->vcpu_id; + core->vm_regs.rbx = rip; + } + return 0; +} @@ -992,7 +1035,7 @@ void v3_init_vmx_cpu(int cpu_id) { PrintDebug("VMXON pointer: 0x%p\n", (void *)host_vmcs_ptrs[cpu_id]); if (vmx_on(host_vmcs_ptrs[cpu_id]) == VMX_SUCCESS) { - PrintDebug("VMX Enabled\n"); + V3_Print("VMX Enabled\n"); } else { PrintError("VMX initialization failure\n"); return;