#include <palacios/vmcs.h>
#include <palacios/vmm.h>
#include <palacios/vmx_lowlevel.h>
+#include <palacios/vmm_lowlevel.h>
+#include <palacios/vmm_config.h>
+#include <palacios/vmm_ctrl_regs.h>
//
//
//
-
+#if 0
#include <palacios/vmm_util.h>
#include <palacios/vmm_string.h>
-static struct vmcs_data* vmxon_ptr;
-
extern uint_t VMCS_LAUNCH();
}
-static void setup_v8086_mode_for_boot(struct guest_info* vm_info)
-{
-
- ((struct vmx_data*)vm_info->vmm_data)->state = VMXASSIST_V8086_BIOS;
- ((struct rflags)info->ctrl_regs.rflags).vm = 1;
- ((struct rflags)info->ctrl_regs.rflags).iopl = 3;
-
-
- vm_info->rip = 0xfff0;
-
- vm_info->segments.cs.selector = 0xf000;
- vm_info->segments.cs.base = 0xf000<<4;
- vm_info->segments.cs.limit = 0xffff;
- vm_info->segments.cs.type = 3;
- vm_info->segments.cs.system = 1;
- vm_info->segments.cs.dpl = 3;
- vm_info->segments.cs.present = 1;
- vm_info->segments.cs.granularity = 0;
-
- vm_info->segments.ss.selector = 0x0000;
- vm_info->segments.ss.base = 0x0000<<4;
- vm_info->segments.ss.limit = 0xffff;
- vm_info->segments.ss.type = 3;
- vm_info->segments.ss.system = 1;
- vm_info->segments.ss.dpl = 3;
- vm_info->segments.ss.present = 1;
- vm_info->segments.ss.granularity = 0;
-
- vm_info->segments.es.selector = 0x0000;
- vm_info->segments.es.base = 0x0000<<4;
- vm_info->segments.es.limit = 0xffff;
- vm_info->segments.es.type = 3;
- vm_info->segments.es.system = 1;
- vm_info->segments.es.dpl = 3;
- vm_info->segments.es.present = 1;
- vm_info->segments.es.granularity = 0;
-
- vm_info->segments.fs.selector = 0x0000;
- vm_info->segments.fs.base = 0x0000<<4;
- vm_info->segments.fs.limit = 0xffff;
- vm_info->segments.fs.type = 3;
- vm_info->segments.fs.system = 1;
- vm_info->segments.fs.dpl = 3;
- vm_info->segments.fs.present = 1;
- vm_info->segments.fs.granularity = 0;
-
- vm_info->segments.gs.selector = 0x0000;
- vm_info->segments.gs.base = 0x0000<<4;
- vm_info->segments.gs.limit = 0xffff;
- vm_info->segments.gs.type = 3;
- vm_info->segments.gs.system = 1;
- vm_info->segments.gs.dpl = 3;
- vm_info->segments.gs.present = 1;
- vm_info->segments.gs.granularity = 0;
-}
static void ConfigureExits(struct VM *vm)
{
//
//
+#endif
+
+static int update_vmcs_host_state(struct guest_info * info) {
+ addr_t tmp;
+
+ struct {
+ uint16_t limit;
+ addr_t base;
+ } __attribute__((packed)) tmp_seg;
+
+
+ struct v3_msr tmp_msr;
+
+ __asm__ __volatile__ ( "movq %%cr0, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_CR0, tmp);
+
+
+ __asm__ __volatile__ ( "movq %%cr3, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_CR3, tmp);
+
+
+ __asm__ __volatile__ ( "movq %%cr4, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_CR4, tmp);
+
+
+
+
+ __asm__ __volatile__ ("sgdt (%0); "
+ :
+ :"q"(&tmp_seg)
+ : "memory"
+ );
+ vmcs_write(VMCS_HOST_GDTR_BASE, tmp_seg.base);
+
+
+ __asm__ __volatile__ ("sidt (%0); "
+ :
+ :"q"(&tmp_seg)
+ : "memory"
+ );
+ vmcs_write(VMCS_HOST_IDTR_BASE, tmp_seg.base);
+
+ /* How do we handle this...?
+ __asm__ __volatile__ ("str (%0); "
+ :
+ :"q"(&tmp_seg)
+ : "memory"
+ );
+ vmcs_write(VMCS_HOST_TR_BASE, tmp_seg.base);
+ */
+
+#define FS_BASE_MSR 0xc0000100
+#define GS_BASE_MSR 0xc0000101
+ // FS.BASE MSR
+ v3_get_msr(FS_BASE_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmcs_write(VMCS_HOST_FS_BASE, tmp_msr.value);
+
+ // GS.BASE MSR
+ v3_get_msr(GS_BASE_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmcs_write(VMCS_HOST_GS_BASE, tmp_msr.value);
+
+
+
+ __asm__ __volatile__ ( "movq %%cs, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_CS_SELECTOR, tmp);
+
+ __asm__ __volatile__ ( "movq %%ss, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_SS_SELECTOR, tmp);
+
+ __asm__ __volatile__ ( "movq %%ds, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_DS_SELECTOR, tmp);
+
+ __asm__ __volatile__ ( "movq %%es, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_ES_SELECTOR, tmp);
+
+ __asm__ __volatile__ ( "movq %%fs, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_FS_SELECTOR, tmp);
+
+ __asm__ __volatile__ ( "movq %%gs, %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_GS_SELECTOR, tmp);
+
+ __asm__ __volatile__ ( "str %0; "
+ : "=q"(tmp)
+ :
+ );
+ vmcs_write(VMCS_HOST_TR_SELECTOR, tmp);
+
+
+#define SYSENTER_CS_MSR 0x00000174
+#define SYSENTER_ESP_MSR 0x00000175
+#define SYSENTER_EIP_MSR 0x00000176
+
+ // SYSENTER CS MSR
+ v3_get_msr(SYSENTER_CS_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmcs_write(VMCS_HOST_SYSENTER_CS, tmp_msr.value);
+
+ // SYSENTER_ESP MSR
+ v3_get_msr(SYSENTER_ESP_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmcs_write(VMCS_HOST_SYSENTER_ESP, tmp_msr.value);
+
+ // SYSENTER_EIP MSR
+ v3_get_msr(SYSENTER_EIP_MSR, &(tmp_msr.hi), &(tmp_msr.lo));
+ vmcs_write(VMCS_HOST_SYSENTER_EIP, tmp_msr.value);
+
+
+ // RIP
+ // RSP
+
+ return 0;
+}
+
+
+
+
+
+static addr_t vmxon_ptr_phys;
+
+
+#if 0
// For the 32 bit reserved bit fields
// MB1s are in the low 32 bits, MBZs are in the high 32 bits of the MSR
static uint32_t sanitize_bits1(uint32_t msr_num, uint32_t val) {
v3_get_msr(msr_num, &mask_msr.hi, &mask_msr.lo);
- PrintDebug("MSR %x = %x : %x \n", msr_num, msr.hi, msr.lo);
+ PrintDebug("MSR %x = %x : %x \n", msr_num, mask_msr.hi, mask_msr.lo);
val &= mask_msr.lo;
val &= mask_msr.hi;
}
+
static addr_t sanitize_bits2(uint32_t msr_num0, uint32_t msr_num1, addr_t val) {
v3_msr_t msr0, msr1;
addr_t msr0_val, msr1_val;
msr0_val = msr0.value;
msr1_val = msr1.value;
- PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, msr0_val, msr_num1, msr1_val);
+ PrintDebug("MSR %x = %p, %x = %p \n", msr_num0, (void*)msr0_val, msr_num1, (void*)msr1_val);
val &= msr0_val;
val &= msr1_val;
return val;
}
+static int setup_base_host_state() {
+
+
+
+ // vmwrite(HOST_IDTR_BASE,
+
+
+}
+
+#endif
-static vmcs_data* allocate_vmcs() {
+static void setup_v8086_mode_for_boot(struct guest_info* vm_info)
+{
+
+ ((struct vmx_data *)vm_info->vmm_data)->state = VMXASSIST_V8086_BIOS;
+ ((struct rflags *)&(vm_info->ctrl_regs.rflags))->vm = 1;
+ ((struct rflags *)&(vm_info->ctrl_regs.rflags))->iopl = 3;
+
+ vm_info->rip = 0xfff0;
+
+ vm_info->segments.cs.selector = 0xf000;
+ vm_info->segments.cs.base = 0xf000 << 4;
+ vm_info->segments.cs.limit = 0xffff;
+ vm_info->segments.cs.type = 3;
+ vm_info->segments.cs.system = 1;
+ vm_info->segments.cs.dpl = 3;
+ vm_info->segments.cs.present = 1;
+ vm_info->segments.cs.granularity = 0;
+
+ int i = 0;
+ struct v3_segment * seg_ptr = (struct v3_segment *)&(vm_info->segments);
+
+ /* Set values for selectors ds through ss */
+ for(i = 1; i < 6 ; i++) {
+ seg_ptr[i].selector = 0x0000;
+ seg_ptr[i].base = 0x00000;
+ seg_ptr[i].type = 3;
+ seg_ptr[i].system = 1;
+ seg_ptr[i].dpl = 3;
+ seg_ptr[i].present = 1;
+ seg_ptr[i].granularity = 0;
+ }
+}
+
+
+static addr_t allocate_vmcs()
+{
reg_ex_t msr;
- vmcs_data* vmcs_page = (vmcs_data*)V3_VAddr(V3_AllocPages(1));
+ PrintDebug("Allocating page\n");
+ struct vmcs_data * vmcs_page = (struct vmcs_data *)V3_VAddr(V3_AllocPages(1));
+
memset(vmcs_page, 0, 4096);
v3_get_msr(VMX_BASIC_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
- vmcs_page->revision = ((struct vmx_basic_msr)msr).revision;
+ vmcs_page->revision = ((struct vmx_basic_msr*)&msr)->revision;
+ PrintDebug("VMX Revision: 0x%x\n",vmcs_page->revision);
- return vmcs_page;
+ return (addr_t)V3_PAddr((void*)vmcs_page);
}
static void init_vmcs_bios(struct guest_info * vm_info)
{
+ setup_v8086_mode_for_boot(vm_info);
+ // TODO: Fix vmcs fields so they're 32-bit
+
}
static int init_vmx_guest(struct guest_info * info, struct v3_vm_config * config_ptr) {
+ PrintDebug("Entering init_vmx_guest\n");
v3_pre_config_guest(info, config_ptr);
struct vmx_data* data;
- PrintDebug("Allocating vmx_data\n");
data = (struct vmx_data*)V3_Malloc(sizeof(struct vmx_data));
+ PrintDebug("vmx_data pointer: %p\n",(void*)data);
+
PrintDebug("Allocating VMCS\n");
- data->vmcs = allocate_vmcs();
+ data->vmcs_ptr_phys = allocate_vmcs();
+ PrintDebug("VMCS pointer: %p\n",(void*)data->vmcs_ptr_phys);
- info->vmm_data = (void*)data;
+ info->vmm_data = (void *)data;
PrintDebug("Initializing VMCS (addr=%p)\n", info->vmm_data);
- init_vmcs_bios((struct vmx_data*)(info->vmm_data), info);
+ init_vmcs_bios(info);
+
+ // v3_post_config_guest(info, config_ptr);
+
+ return 0;
+}
+
+
+static int inline check_vmcs_write(vmcs_field_t field, addr_t val)
+{
+ int ret = 0;
+ ret = vmcs_write(field,val);
- v3_post_config_guest(info, config_ptr);
+ if (ret != VMX_SUCCESS) {
+ PrintError("VMWRITE error on %s!: %d\n", v3_vmcs_field_to_str(field), ret);
+ return 1;
+ }
return 0;
}
+static void inline translate_segment_access(struct v3_segment * v3_seg,
+ struct vmcs_segment_access * access)
+{
+ access->type = v3_seg->type;
+ access->desc_type = v3_seg->system;
+ access->dpl = v3_seg->dpl;
+ access->present = v3_seg->present;
+ access->avail = v3_seg->avail;
+ access->long_mode = v3_seg->long_mode;
+ access->db = v3_seg->db;
+ access->granularity = v3_seg->granularity;
+}
+
+static int inline vmcs_write_guest_segments(struct guest_info* info)
+{
+ int ret = 0;
+ struct vmcs_segment_access access;
+
+ /* CS Segment */
+ translate_segment_access(&(info->segments.cs), &access);
+
+ ret &= check_vmcs_write(VMCS_GUEST_CS_BASE, info->segments.cs.base);
+ ret &= check_vmcs_write(VMCS_GUEST_CS_SELECTOR, info->segments.cs.selector);
+ ret &= check_vmcs_write(VMCS_GUEST_CS_LIMIT, info->segments.cs.limit);
+ ret &= check_vmcs_write(VMCS_GUEST_CS_ACCESS, access.value);
+
+ /* SS Segment */
+ translate_segment_access(&(info->segments.ss), &access);
+
+ ret &= check_vmcs_write(VMCS_GUEST_SS_BASE, info->segments.ss.base);
+ ret &= check_vmcs_write(VMCS_GUEST_SS_SELECTOR, info->segments.ss.selector);
+ ret &= check_vmcs_write(VMCS_GUEST_SS_LIMIT, info->segments.ss.limit);
+ ret &= check_vmcs_write(VMCS_GUEST_SS_ACCESS, access.value);
+ /* DS Segment */
+ translate_segment_access(&(info->segments.ds), &access);
+ ret &= check_vmcs_write(VMCS_GUEST_DS_BASE, info->segments.ds.base);
+ ret &= check_vmcs_write(VMCS_GUEST_DS_SELECTOR, info->segments.ds.selector);
+ ret &= check_vmcs_write(VMCS_GUEST_DS_LIMIT, info->segments.ds.limit);
+ ret &= check_vmcs_write(VMCS_GUEST_DS_ACCESS, access.value);
-static int start_vmx_guest(struct guest_info *info) {
- struct vmx_data* vmx_data = (struct vmx_data*)info->vmm_data;
+
+ /* ES Segment */
+ translate_segment_access(&(info->segments.es), &access);
+
+ ret &= check_vmcs_write(VMCS_GUEST_ES_BASE, info->segments.es.base);
+ ret &= check_vmcs_write(VMCS_GUEST_ES_SELECTOR, info->segments.es.selector);
+ ret &= check_vmcs_write(VMCS_GUEST_ES_LIMIT, info->segments.es.limit);
+ ret &= check_vmcs_write(VMCS_GUEST_ES_ACCESS, access.value);
+
+ /* FS Segment */
+ translate_segment_access(&(info->segments.fs), &access);
+
+ ret &= check_vmcs_write(VMCS_GUEST_FS_BASE, info->segments.fs.base);
+ ret &= check_vmcs_write(VMCS_GUEST_FS_SELECTOR, info->segments.fs.selector);
+ ret &= check_vmcs_write(VMCS_GUEST_FS_LIMIT, info->segments.fs.limit);
+ ret &= check_vmcs_write(VMCS_GUEST_FS_ACCESS, access.value);
+
+ /* GS Segment */
+ translate_segment_access(&(info->segments.gs), &access);
+
+ ret &= check_vmcs_write(VMCS_GUEST_GS_BASE, info->segments.gs.base);
+ ret &= check_vmcs_write(VMCS_GUEST_GS_SELECTOR, info->segments.gs.selector);
+ ret &= check_vmcs_write(VMCS_GUEST_GS_LIMIT, info->segments.gs.limit);
+ ret &= check_vmcs_write(VMCS_GUEST_GS_ACCESS, access.value);
+
+ return ret;
+}
+
+static int start_vmx_guest(struct guest_info* info) {
+ struct vmx_data * vmx_data = (struct vmx_data *)info->vmm_data;
int vmx_ret;
// Have to do a whole lot of flag setting here
- vmx_ret = vmcs_clear(vmx_data->vmcs);
- if(vmx_ret != VMX_SUCCESS) {
- PrintDebug("VMCS Clear failed\n");
+ PrintDebug("Clearing VMCS\n");
+ vmx_ret = vmcs_clear(vmx_data->vmcs_ptr_phys);
+
+ if (vmx_ret != VMX_SUCCESS) {
+ PrintError("VMCLEAR failed\n");
return -1;
}
- vmx_ret = vmcs_load(vmx_data->vmcs);
- if(vmx_ret != VMX_SUCCESS) {
- PrintDebug("Executing VMPTRLD\n");
+
+ PrintDebug("Loading VMCS\n");
+ vmx_ret = vmcs_load(vmx_data->vmcs_ptr_phys);
+
+ if (vmx_ret != VMX_SUCCESS) {
+ PrintError("VMPTRLD failed\n");
return -1;
}
- // Setup guest state
+
+ update_vmcs_host_state(info);
+
+ // Setup guest state
+ // TODO: This is not 32-bit safe!
+ vmx_ret &= check_vmcs_write(VMCS_GUEST_RIP, info->rip);
+
+ vmx_ret &= vmcs_write_guest_segments(info);
+
+ if (vmx_ret != 0) {
+ PrintError("Could not initialize VMCS segments\n");
+ return -1;
+ }
+
+ v3_print_vmcs_guest_state();
+
return -1;
}
int v3_is_vmx_capable() {
- uint_t ret;
v3_msr_t feature_msr;
addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
- v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
+ v3_cpuid(0x1, &eax, &ebx, &ecx, &edx);
+
+ PrintDebug("ECX: %p\n", (void*)ecx);
if (ecx & CPUID_1_ECX_VTXFLAG) {
- v3_get_msr(IA32_FEATURE_CONTROL_MSR, &(feature_msr.hi), &(feature_msr.lo));
+ v3_get_msr(VMX_FEATURE_CONTROL_MSR, &(feature_msr.hi), &(feature_msr.lo));
- PrintTrace("MSRREGlow: 0x%.8x\n", feature_msr.lo);
+ PrintTrace("MSRREGlow: 0x%.8x\n", feature_msr.lo);
- if ((feature_msr.lo & FEATURE_CONTROL_VALID) != FEATURE_CONTROL_VALID) {
- PrintDebug("VMX is locked -- enable in the BIOS\n");
- return 0;
- }
+ if ((feature_msr.lo & FEATURE_CONTROL_VALID) != FEATURE_CONTROL_VALID) {
+ PrintDebug("VMX is locked -- enable in the BIOS\n");
+ return 0;
+ }
} else {
PrintDebug("VMX not supported on this cpu\n");
-// We set up the global host state that is unlikely to change across processes here
-// Segment Descriptors mainly
-
-struct seg_descriptor {
-
-};
-
-
-static int setup_base_host_state() {
- uint8_t gdt[10];
-
-
-
- // vmwrite(HOST_IDTR_BASE,
-
-
-}
-
-
-
void v3_init_vmx(struct v3_ctrl_ops * vm_ops) {
- v3_msr_t basic_msr;
+ extern v3_cpu_arch_t v3_cpu_type;
__asm__ __volatile__ (
- "movl %%cr4, %%ebx; "
- "orl %%ebx, 0x00002000; "
- "movl %%ebx, %%cr4"
+ "movq %%cr4, %%rbx; "
+ "orq $0x00002000,%%rbx; "
+ "movq %%rbx, %%cr4;"
+ :
+ :
+ : "%rbx"
);
// Should check and return Error here....
__asm__ __volatile__ (
- "movl %%cr0, %%ebx; "
- "orl %%ebx, 0x00000020; "
- "movl %%ebx, %%cr0"
+ "movq %%cr0, %%rbx; "
+ "orq $0x00000020,%%rbx; "
+ "movq %%rbx, %%cr0;"
+ :
+ :
+ : "%rbx"
);
// Setup VMXON Region
- vmxon_ptr = allocate_vmcs();
- PrintDebug("VMX revision: 0x%p\n", (void*)vmxon_ptr);
+ vmxon_ptr_phys = allocate_vmcs();
+ PrintDebug("VMXON pointer: 0x%p\n", (void*)vmxon_ptr_phys);
- if (v3_enable_vmx(vmxon_ptr) == 0) {
+ if (v3_enable_vmx(vmxon_ptr_phys) == VMX_SUCCESS) {
PrintDebug("VMX Enabled\n");
} else {
PrintError("VMX initialization failure\n");
}
// Setup the VMX specific vmm operations
- vmm_ops->init_guest = &init_vmx_guest;
- vmm_ops->start_guest = &start_vmx_guest;
- vmm_ops->has_nested_paging = &has_vmx_nested_paging;
+ vm_ops->init_guest = &init_vmx_guest;
+ vm_ops->start_guest = &start_vmx_guest;
+ vm_ops->has_nested_paging = &has_vmx_nested_paging;
}
