SVM Support, by Alexander Graf.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3210 c046a42c-6fe2-441c-8c8c-71466251a162

6 files changed, 888 insertions, 13 deletions

diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 9ae50ee..2cc7d64 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -84,6 +84,7 @@
 #define DESC_AVL_MASK   (1 << 20)
 #define DESC_P_MASK     (1 << 15)
 #define DESC_DPL_SHIFT  13
+#define DESC_DPL_MASK   (1 << DESC_DPL_SHIFT)
 #define DESC_S_MASK     (1 << 12)
 #define DESC_TYPE_SHIFT 8
 #define DESC_A_MASK     (1 << 8)
@@ -149,6 +150,8 @@
 #define HF_VM_SHIFT         17 /* must be same as eflags */
 #define HF_HALTED_SHIFT     18 /* CPU halted */
 #define HF_SMM_SHIFT        19 /* CPU in SMM mode */
+#define HF_GIF_SHIFT        20 /* if set CPU takes interrupts */
+#define HF_HIF_SHIFT        21 /* shadow copy of IF_MASK when in SVM */
 
 #define HF_CPL_MASK          (3 << HF_CPL_SHIFT)
 #define HF_SOFTMMU_MASK      (1 << HF_SOFTMMU_SHIFT)
@@ -166,6 +169,8 @@
 #define HF_OSFXSR_MASK       (1 << HF_OSFXSR_SHIFT)
 #define HF_HALTED_MASK       (1 << HF_HALTED_SHIFT)
 #define HF_SMM_MASK          (1 << HF_SMM_SHIFT)
+#define HF_GIF_MASK          (1 << HF_GIF_SHIFT)
+#define HF_HIF_MASK          (1 << HF_HIF_SHIFT)
 
 #define CR0_PE_MASK  (1 << 0)
 #define CR0_MP_MASK  (1 << 1)
@@ -249,6 +254,8 @@
 #define MSR_GSBASE                      0xc0000101
 #define MSR_KERNELGSBASE                0xc0000102
 
+#define MSR_VM_HSAVE_PA                 0xc0010117
+
 /* cpuid_features bits */
 #define CPUID_FP87 (1 << 0)
 #define CPUID_VME  (1 << 1)
@@ -283,6 +290,8 @@
 #define CPUID_EXT2_FFXSR   (1 << 25)
 #define CPUID_EXT2_LM      (1 << 29)
 
+#define CPUID_EXT3_SVM     (1 << 2)
+
 #define EXCP00_DIVZ	0
 #define EXCP01_SSTP	1
 #define EXCP02_NMI	2
@@ -489,6 +498,16 @@ typedef struct CPUX86State {
     uint32_t sysenter_eip;
     uint64_t efer;
     uint64_t star;
+
+    target_phys_addr_t vm_hsave;
+    target_phys_addr_t vm_vmcb;
+    uint64_t intercept;
+    uint16_t intercept_cr_read;
+    uint16_t intercept_cr_write;
+    uint16_t intercept_dr_read;
+    uint16_t intercept_dr_write;
+    uint32_t intercept_exceptions;
+
 #ifdef TARGET_X86_64
     target_ulong lstar;
     target_ulong cstar;
@@ -530,6 +549,7 @@ typedef struct CPUX86State {
     uint32_t cpuid_xlevel;
     uint32_t cpuid_model[12];
     uint32_t cpuid_ext2_features;
+    uint32_t cpuid_ext3_features;
     uint32_t cpuid_apic_id;
 
 #ifdef USE_KQEMU
@@ -670,4 +690,6 @@ static inline int cpu_get_time_fast(void)
 
 #include "cpu-all.h"
 
+#include "svm.h"
+
 #endif /* CPU_I386_H */
diff --git a/target-i386/exec.h b/target-i386/exec.h
index 59c0649..1cb7346 100644
--- a/target-i386/exec.h
+++ b/target-i386/exec.h
@@ -502,6 +502,15 @@ void update_fp_status(void);
 void helper_hlt(void);
 void helper_monitor(void);
 void helper_mwait(void);
+void helper_vmrun(target_ulong addr);
+void helper_vmmcall(void);
+void helper_vmload(target_ulong addr);
+void helper_vmsave(target_ulong addr);
+void helper_stgi(void);
+void helper_clgi(void);
+void helper_skinit(void);
+void helper_invlpga(void);
+void vmexit(uint64_t exit_code, uint64_t exit_info_1);
 
 extern const uint8_t parity_table[256];
 extern const uint8_t rclw_table[32];
@@ -589,3 +598,4 @@ static inline int cpu_halted(CPUState *env) {
     }
     return EXCP_HALTED;
 }
+
diff --git a/target-i386/helper.c b/target-i386/helper.c
index 43a8b9b..40dc41f 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -594,7 +594,18 @@ static void do_interrupt_protected(int intno, int is_int, int error_code,
     int has_error_code, new_stack, shift;
     uint32_t e1, e2, offset, ss, esp, ss_e1, ss_e2;
     uint32_t old_eip, sp_mask;
+    int svm_should_check = 1;
 
+    if ((env->intercept & INTERCEPT_SVM_MASK) && !is_int && next_eip==-1) {
+        next_eip = EIP;
+        svm_should_check = 0;
+    }
+
+    if (svm_should_check
+        && (INTERCEPTEDl(_exceptions, 1 << intno)
+        && !is_int)) {
+        raise_interrupt(intno, is_int, error_code, 0);
+    }
     has_error_code = 0;
     if (!is_int && !is_hw) {
         switch(intno) {
@@ -830,7 +841,17 @@ static void do_interrupt64(int intno, int is_int, int error_code,
     int has_error_code, new_stack;
     uint32_t e1, e2, e3, ss;
     target_ulong old_eip, esp, offset;
+    int svm_should_check = 1;
 
+    if ((env->intercept & INTERCEPT_SVM_MASK) && !is_int && next_eip==-1) {
+        next_eip = EIP;
+        svm_should_check = 0;
+    }
+    if (svm_should_check
+        && INTERCEPTEDl(_exceptions, 1 << intno)
+        && !is_int) {
+        raise_interrupt(intno, is_int, error_code, 0);
+    }
     has_error_code = 0;
     if (!is_int && !is_hw) {
         switch(intno) {
@@ -1077,7 +1098,17 @@ static void do_interrupt_real(int intno, int is_int, int error_code,
     int selector;
     uint32_t offset, esp;
     uint32_t old_cs, old_eip;
+    int svm_should_check = 1;
 
+    if ((env->intercept & INTERCEPT_SVM_MASK) && !is_int && next_eip==-1) {
+        next_eip = EIP;
+        svm_should_check = 0;
+    }
+    if (svm_should_check
+        && INTERCEPTEDl(_exceptions, 1 << intno)
+        && !is_int) {
+        raise_interrupt(intno, is_int, error_code, 0);
+    }
     /* real mode (simpler !) */
     dt = &env->idt;
     if (intno * 4 + 3 > dt->limit)
@@ -1227,8 +1258,10 @@ int check_exception(int intno, int *error_code)
 void raise_interrupt(int intno, int is_int, int error_code,
                      int next_eip_addend)
 {
-    if (!is_int)
+    if (!is_int) {
+        svm_check_intercept_param(SVM_EXIT_EXCP_BASE + intno, error_code);
         intno = check_exception(intno, &error_code);
+    }
 
     env->exception_index = intno;
     env->error_code = error_code;
@@ -1671,7 +1704,7 @@ void helper_cpuid(void)
     case 0x80000001:
         EAX = env->cpuid_features;
         EBX = 0;
-        ECX = 0;
+        ECX = env->cpuid_ext3_features;
         EDX = env->cpuid_ext2_features;
         break;
     case 0x80000002:
@@ -2745,6 +2778,9 @@ void helper_wrmsr(void)
     case MSR_PAT:
         env->pat = val;
         break;
+    case MSR_VM_HSAVE_PA:
+        env->vm_hsave = val;
+        break;
 #ifdef TARGET_X86_64
     case MSR_LSTAR:
         env->lstar = val;
@@ -2796,6 +2832,9 @@ void helper_rdmsr(void)
     case MSR_PAT:
         val = env->pat;
         break;
+    case MSR_VM_HSAVE_PA:
+        val = env->vm_hsave;
+        break;
 #ifdef TARGET_X86_64
     case MSR_LSTAR:
         val = env->lstar;
@@ -3877,3 +3916,483 @@ void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr)
     }
     env = saved_env;
 }
+
+
+/* Secure Virtual Machine helpers */
+
+void helper_stgi(void)
+{
+    env->hflags |= HF_GIF_MASK;
+}
+
+void helper_clgi(void)
+{
+    env->hflags &= ~HF_GIF_MASK;
+}
+
+#if defined(CONFIG_USER_ONLY)
+
+void helper_vmrun(target_ulong addr) { }
+void helper_vmmcall(void) { }
+void helper_vmload(target_ulong addr) { }
+void helper_vmsave(target_ulong addr) { }
+void helper_skinit(void) { }
+void helper_invlpga(void) { }
+void vmexit(uint64_t exit_code, uint64_t exit_info_1) { }
+int svm_check_intercept_param(uint32_t type, uint64_t param)
+{
+    return 0;
+}
+
+#else
+
+static inline uint32_t
+vmcb2cpu_attrib(uint16_t vmcb_attrib, uint32_t vmcb_base, uint32_t vmcb_limit)
+{
+    return    ((vmcb_attrib & 0x00ff) << 8)          /* Type, S, DPL, P */
+	    | ((vmcb_attrib & 0x0f00) << 12)         /* AVL, L, DB, G */
+	    | ((vmcb_base >> 16) & 0xff)             /* Base 23-16 */
+	    | (vmcb_base & 0xff000000)               /* Base 31-24 */
+	    | (vmcb_limit & 0xf0000);                /* Limit 19-16 */
+}
+
+static inline uint16_t cpu2vmcb_attrib(uint32_t cpu_attrib)
+{
+    return    ((cpu_attrib >> 8) & 0xff)             /* Type, S, DPL, P */
+	    | ((cpu_attrib & 0xf00000) >> 12);       /* AVL, L, DB, G */
+}
+
+extern uint8_t *phys_ram_base;
+void helper_vmrun(target_ulong addr)
+{
+    uint32_t event_inj;
+    uint32_t int_ctl;
+
+    if (loglevel & CPU_LOG_TB_IN_ASM)
+        fprintf(logfile,"vmrun! " TARGET_FMT_lx "\n", addr);
+
+    env->vm_vmcb = addr;
+    regs_to_env();
+
+    /* save the current CPU state in the hsave page */
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
+    stl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
+
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base), env->idt.base);
+    stl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
+
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0), env->cr[0]);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr2), env->cr[2]);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3), env->cr[3]);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4), env->cr[4]);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr8), env->cr[8]);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6), env->dr[6]);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7), env->dr[7]);
+
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer), env->efer);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags), compute_eflags());
+
+    SVM_SAVE_SEG(env->vm_hsave, segs[R_ES], es);
+    SVM_SAVE_SEG(env->vm_hsave, segs[R_CS], cs);
+    SVM_SAVE_SEG(env->vm_hsave, segs[R_SS], ss);
+    SVM_SAVE_SEG(env->vm_hsave, segs[R_DS], ds);
+
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip), EIP);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp), ESP);
+    stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax), EAX);
+
+    /* load the interception bitmaps so we do not need to access the
+       vmcb in svm mode */
+    /* We shift all the intercept bits so we can OR them with the TB
+       flags later on */
+    env->intercept            = (ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept)) << INTERCEPT_INTR) | INTERCEPT_SVM_MASK;
+    env->intercept_cr_read    = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_read));
+    env->intercept_cr_write   = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_write));
+    env->intercept_dr_read    = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_read));
+    env->intercept_dr_write   = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_write));
+    env->intercept_exceptions = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_exceptions));
+
+    env->gdt.base  = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base));
+    env->gdt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit));
+
+    env->idt.base  = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base));
+    env->idt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit));
+
+    /* clear exit_info_2 so we behave like the real hardware */
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), 0);
+
+    cpu_x86_update_cr0(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0)));
+    cpu_x86_update_cr4(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4)));
+    cpu_x86_update_cr3(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3)));
+    env->cr[2] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2));
+    int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
+    if (int_ctl & V_INTR_MASKING_MASK) {
+        env->cr[8] = int_ctl & V_TPR_MASK;
+        if (env->eflags & IF_MASK)
+            env->hflags |= HF_HIF_MASK;
+    }
+
+#ifdef TARGET_X86_64
+    env->efer = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer));
+    env->hflags &= ~HF_LMA_MASK;
+    if (env->efer & MSR_EFER_LMA)
+       env->hflags |= HF_LMA_MASK;
+#endif
+    env->eflags = 0;
+    load_eflags(ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags)),
+                ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
+    CC_OP = CC_OP_EFLAGS;
+    CC_DST = 0xffffffff;
+
+    SVM_LOAD_SEG(env->vm_vmcb, ES, es);
+    SVM_LOAD_SEG(env->vm_vmcb, CS, cs);
+    SVM_LOAD_SEG(env->vm_vmcb, SS, ss);
+    SVM_LOAD_SEG(env->vm_vmcb, DS, ds);
+
+    EIP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip));
+    env->eip = EIP;
+    ESP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp));
+    EAX = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax));
+    env->dr[7] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7));
+    env->dr[6] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6));
+    cpu_x86_set_cpl(env, ldub_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl)));
+
+    /* FIXME: guest state consistency checks */
+
+    switch(ldub_phys(env->vm_vmcb + offsetof(struct vmcb, control.tlb_ctl))) {
+        case TLB_CONTROL_DO_NOTHING:
+            break;
+        case TLB_CONTROL_FLUSH_ALL_ASID:
+            /* FIXME: this is not 100% correct but should work for now */
+            tlb_flush(env, 1);
+        break;
+    }
+
+    helper_stgi();
+
+    regs_to_env();
+
+    /* maybe we need to inject an event */
+    event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
+    if (event_inj & SVM_EVTINJ_VALID) {
+        uint8_t vector = event_inj & SVM_EVTINJ_VEC_MASK;
+        uint16_t valid_err = event_inj & SVM_EVTINJ_VALID_ERR;
+        uint32_t event_inj_err = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err));
+        stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj & ~SVM_EVTINJ_VALID);
+
+        if (loglevel & CPU_LOG_TB_IN_ASM)
+            fprintf(logfile, "Injecting(%#hx): ", valid_err);
+        /* FIXME: need to implement valid_err */
+        switch (event_inj & SVM_EVTINJ_TYPE_MASK) {
+        case SVM_EVTINJ_TYPE_INTR:
+                env->exception_index = vector;
+                env->error_code = event_inj_err;
+                env->exception_is_int = 1;
+                env->exception_next_eip = -1;
+                if (loglevel & CPU_LOG_TB_IN_ASM)
+                    fprintf(logfile, "INTR");
+                break;
+        case SVM_EVTINJ_TYPE_NMI:
+                env->exception_index = vector;
+                env->error_code = event_inj_err;
+                env->exception_is_int = 1;
+                env->exception_next_eip = EIP;
+                if (loglevel & CPU_LOG_TB_IN_ASM)
+                    fprintf(logfile, "NMI");
+                break;
+        case SVM_EVTINJ_TYPE_EXEPT:
+                env->exception_index = vector;
+                env->error_code = event_inj_err;
+                env->exception_is_int = 0;
+                env->exception_next_eip = -1;
+                if (loglevel & CPU_LOG_TB_IN_ASM)
+                    fprintf(logfile, "EXEPT");
+                break;
+        case SVM_EVTINJ_TYPE_SOFT:
+                env->exception_index = vector;
+                env->error_code = event_inj_err;
+                env->exception_is_int = 1;
+                env->exception_next_eip = EIP;
+                if (loglevel & CPU_LOG_TB_IN_ASM)
+                    fprintf(logfile, "SOFT");
+                break;
+        }
+        if (loglevel & CPU_LOG_TB_IN_ASM)
+            fprintf(logfile, " %#x %#x\n", env->exception_index, env->error_code);
+    }
+    if (int_ctl & V_IRQ_MASK)
+        env->interrupt_request |= CPU_INTERRUPT_VIRQ;
+
+    cpu_loop_exit();
+}
+
+void helper_vmmcall(void)
+{
+    if (loglevel & CPU_LOG_TB_IN_ASM)
+        fprintf(logfile,"vmmcall!\n");
+}
+
+void helper_vmload(target_ulong addr)
+{
+    if (loglevel & CPU_LOG_TB_IN_ASM)
+        fprintf(logfile,"vmload! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n",
+                addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
+                env->segs[R_FS].base);
+
+    SVM_LOAD_SEG2(addr, segs[R_FS], fs);
+    SVM_LOAD_SEG2(addr, segs[R_GS], gs);
+    SVM_LOAD_SEG2(addr, tr, tr);
+    SVM_LOAD_SEG2(addr, ldt, ldtr);
+
+#ifdef TARGET_X86_64
+    env->kernelgsbase = ldq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base));
+    env->lstar = ldq_phys(addr + offsetof(struct vmcb, save.lstar));
+    env->cstar = ldq_phys(addr + offsetof(struct vmcb, save.cstar));
+    env->fmask = ldq_phys(addr + offsetof(struct vmcb, save.sfmask));
+#endif
+    env->star = ldq_phys(addr + offsetof(struct vmcb, save.star));
+    env->sysenter_cs = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_cs));
+    env->sysenter_esp = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_esp));
+    env->sysenter_eip = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_eip));
+}
+
+void helper_vmsave(target_ulong addr)
+{
+    if (loglevel & CPU_LOG_TB_IN_ASM)
+        fprintf(logfile,"vmsave! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n",
+                addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
+                env->segs[R_FS].base);
+
+    SVM_SAVE_SEG(addr, segs[R_FS], fs);
+    SVM_SAVE_SEG(addr, segs[R_GS], gs);
+    SVM_SAVE_SEG(addr, tr, tr);
+    SVM_SAVE_SEG(addr, ldt, ldtr);
+
+#ifdef TARGET_X86_64
+    stq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base), env->kernelgsbase);
+    stq_phys(addr + offsetof(struct vmcb, save.lstar), env->lstar);
+    stq_phys(addr + offsetof(struct vmcb, save.cstar), env->cstar);
+    stq_phys(addr + offsetof(struct vmcb, save.sfmask), env->fmask);
+#endif
+    stq_phys(addr + offsetof(struct vmcb, save.star), env->star);
+    stq_phys(addr + offsetof(struct vmcb, save.sysenter_cs), env->sysenter_cs);
+    stq_phys(addr + offsetof(struct vmcb, save.sysenter_esp), env->sysenter_esp);
+    stq_phys(addr + offsetof(struct vmcb, save.sysenter_eip), env->sysenter_eip);
+}
+
+void helper_skinit(void)
+{
+    if (loglevel & CPU_LOG_TB_IN_ASM)
+        fprintf(logfile,"skinit!\n");
+}
+
+void helper_invlpga(void)
+{
+    tlb_flush(env, 0);
+}
+
+int svm_check_intercept_param(uint32_t type, uint64_t param)
+{
+    switch(type) {
+    case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR0 + 8:
+        if (INTERCEPTEDw(_cr_read, (1 << (type - SVM_EXIT_READ_CR0)))) {
+            vmexit(type, param);
+            return 1;
+        }
+        break;
+    case SVM_EXIT_READ_DR0 ... SVM_EXIT_READ_DR0 + 8:
+        if (INTERCEPTEDw(_dr_read, (1 << (type - SVM_EXIT_READ_DR0)))) {
+            vmexit(type, param);
+            return 1;
+        }
+        break;
+    case SVM_EXIT_WRITE_CR0 ... SVM_EXIT_WRITE_CR0 + 8:
+        if (INTERCEPTEDw(_cr_write, (1 << (type - SVM_EXIT_WRITE_CR0)))) {
+            vmexit(type, param);
+            return 1;
+        }
+        break;
+    case SVM_EXIT_WRITE_DR0 ... SVM_EXIT_WRITE_DR0 + 8:
+        if (INTERCEPTEDw(_dr_write, (1 << (type - SVM_EXIT_WRITE_DR0)))) {
+            vmexit(type, param);
+            return 1;
+        }
+        break;
+    case SVM_EXIT_EXCP_BASE ... SVM_EXIT_EXCP_BASE + 16:
+        if (INTERCEPTEDl(_exceptions, (1 << (type - SVM_EXIT_EXCP_BASE)))) {
+            vmexit(type, param);
+            return 1;
+        }
+        break;
+    case SVM_EXIT_IOIO:
+        if (INTERCEPTED(1ULL << INTERCEPT_IOIO_PROT)) {
+            /* FIXME: this should be read in at vmrun (faster this way?) */
+            uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.iopm_base_pa));
+            uint16_t port = (uint16_t) (param >> 16);
+
+            if(ldub_phys(addr + port / 8) & (1 << (port % 8)))
+                vmexit(type, param);
+        }
+        break;
+
+    case SVM_EXIT_MSR:
+        if (INTERCEPTED(1ULL << INTERCEPT_MSR_PROT)) {
+            /* FIXME: this should be read in at vmrun (faster this way?) */
+            uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.msrpm_base_pa));
+            switch((uint32_t)ECX) {
+            case 0 ... 0x1fff:
+                T0 = (ECX * 2) % 8;
+                T1 = ECX / 8;
+                break;
+            case 0xc0000000 ... 0xc0001fff:
+                T0 = (8192 + ECX - 0xc0000000) * 2;
+                T1 = (T0 / 8);
+                T0 %= 8;
+                break;
+            case 0xc0010000 ... 0xc0011fff:
+                T0 = (16384 + ECX - 0xc0010000) * 2;
+                T1 = (T0 / 8);
+                T0 %= 8;
+                break;
+            default:
+                vmexit(type, param);
+                return 1;
+            }
+            if (ldub_phys(addr + T1) & ((1 << param) << T0))
+                vmexit(type, param);
+            return 1;
+        }
+        break;
+    default:
+        if (INTERCEPTED((1ULL << ((type - SVM_EXIT_INTR) + INTERCEPT_INTR)))) {
+            vmexit(type, param);
+            return 1;
+        }
+        break;
+    }
+    return 0;
+}
+
+void vmexit(uint64_t exit_code, uint64_t exit_info_1)
+{
+    uint32_t int_ctl;
+
+    if (loglevel & CPU_LOG_TB_IN_ASM)
+        fprintf(logfile,"vmexit(%016" PRIx64 ", %016" PRIx64 ", %016" PRIx64 ", " TARGET_FMT_lx ")!\n",
+                exit_code, exit_info_1,
+                ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2)),
+                EIP);
+
+    /* Save the VM state in the vmcb */
+    SVM_SAVE_SEG(env->vm_vmcb, segs[R_ES], es);
+    SVM_SAVE_SEG(env->vm_vmcb, segs[R_CS], cs);
+    SVM_SAVE_SEG(env->vm_vmcb, segs[R_SS], ss);
+    SVM_SAVE_SEG(env->vm_vmcb, segs[R_DS], ds);
+
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
+    stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
+
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base), env->idt.base);
+    stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
+
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer), env->efer);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0), env->cr[0]);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2), env->cr[2]);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3), env->cr[3]);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4), env->cr[4]);
+
+    if ((int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl))) & V_INTR_MASKING_MASK) {
+        int_ctl &= ~V_TPR_MASK;
+        int_ctl |= env->cr[8] & V_TPR_MASK;
+        stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl), int_ctl);
+    }
+
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags), compute_eflags());
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip), env->eip);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp), ESP);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax), EAX);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7), env->dr[7]);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6), env->dr[6]);
+    stb_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl), env->hflags & HF_CPL_MASK);
+
+    /* Reload the host state from vm_hsave */
+    env->hflags &= ~HF_HIF_MASK;
+    env->intercept = 0;
+    env->intercept_exceptions = 0;
+    env->interrupt_request &= ~CPU_INTERRUPT_VIRQ;
+
+    env->gdt.base  = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base));
+    env->gdt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit));
+
+    env->idt.base  = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base));
+    env->idt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit));
+
+    cpu_x86_update_cr0(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0)) | CR0_PE_MASK);
+    cpu_x86_update_cr4(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4)));
+    cpu_x86_update_cr3(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3)));
+    if (int_ctl & V_INTR_MASKING_MASK)
+        env->cr[8] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr8));
+    /* we need to set the efer after the crs so the hidden flags get set properly */
+#ifdef TARGET_X86_64
+    env->efer  = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer));
+    env->hflags &= ~HF_LMA_MASK;
+    if (env->efer & MSR_EFER_LMA)
+       env->hflags |= HF_LMA_MASK;
+#endif
+
+    env->eflags = 0;
+    load_eflags(ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags)),
+                ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
+    CC_OP = CC_OP_EFLAGS;
+
+    SVM_LOAD_SEG(env->vm_hsave, ES, es);
+    SVM_LOAD_SEG(env->vm_hsave, CS, cs);
+    SVM_LOAD_SEG(env->vm_hsave, SS, ss);
+    SVM_LOAD_SEG(env->vm_hsave, DS, ds);
+
+    EIP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip));
+    ESP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp));
+    EAX = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax));
+
+    env->dr[6] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6));
+    env->dr[7] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7));
+
+    /* other setups */
+    cpu_x86_set_cpl(env, 0);
+    stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_code_hi), (uint32_t)(exit_code >> 32));
+    stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_code), exit_code);
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_1), exit_info_1);
+
+    helper_clgi();
+    /* FIXME: Resets the current ASID register to zero (host ASID). */
+
+    /* Clears the V_IRQ and V_INTR_MASKING bits inside the processor. */
+
+    /* Clears the TSC_OFFSET inside the processor. */
+
+    /* If the host is in PAE mode, the processor reloads the host's PDPEs
+       from the page table indicated the host's CR3. If the PDPEs contain
+       illegal state, the processor causes a shutdown. */
+
+    /* Forces CR0.PE = 1, RFLAGS.VM = 0. */
+    env->cr[0] |= CR0_PE_MASK;
+    env->eflags &= ~VM_MASK;
+
+    /* Disables all breakpoints in the host DR7 register. */
+
+    /* Checks the reloaded host state for consistency. */
+
+    /* If the host's rIP reloaded by #VMEXIT is outside the limit of the
+       host's code segment or non-canonical (in the case of long mode), a
+       #GP fault is delivered inside the host.) */
+
+    /* remove any pending exception */
+    env->exception_index = -1;
+    env->error_code = 0;
+    env->old_exception = -1;
+
+    regs_to_env();
+    cpu_loop_exit();
+}
+
+#endif
diff --git a/target-i386/helper2.c b/target-i386/helper2.c
index 715b289..541d83f 100644
--- a/target-i386/helper2.c
+++ b/target-i386/helper2.c
@@ -27,6 +27,7 @@
 
 #include "cpu.h"
 #include "exec-all.h"
+#include "svm.h"
 
 //#define DEBUG_MMU
 
@@ -111,10 +112,11 @@ CPUX86State *cpu_x86_init(void)
                                CPUID_CX8 | CPUID_PGE | CPUID_CMOV |
                                CPUID_PAT);
         env->pat = 0x0007040600070406ULL;
+        env->cpuid_ext3_features = CPUID_EXT3_SVM;
         env->cpuid_ext_features = CPUID_EXT_SSE3;
         env->cpuid_features |= CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | CPUID_PAE | CPUID_SEP;
         env->cpuid_features |= CPUID_APIC;
-        env->cpuid_xlevel = 0x80000006;
+        env->cpuid_xlevel = 0x8000000e;
         {
             const char *model_id = "QEMU Virtual CPU version " QEMU_VERSION;
             int c, len, i;
@@ -131,7 +133,6 @@ CPUX86State *cpu_x86_init(void)
         /* currently not enabled for std i386 because not fully tested */
         env->cpuid_ext2_features = (env->cpuid_features & 0x0183F3FF);
         env->cpuid_ext2_features |= CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX;
-        env->cpuid_xlevel = 0x80000008;
 
         /* these features are needed for Win64 and aren't fully implemented */
         env->cpuid_features |= CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA;
@@ -162,6 +163,7 @@ void cpu_reset(CPUX86State *env)
 #ifdef CONFIG_SOFTMMU
     env->hflags |= HF_SOFTMMU_MASK;
 #endif
+    env->hflags |= HF_GIF_MASK;
 
     cpu_x86_update_cr0(env, 0x60000010);
     env->a20_mask = 0xffffffff;
@@ -865,7 +867,6 @@ int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
  do_fault_protect:
     error_code = PG_ERROR_P_MASK;
  do_fault:
-    env->cr[2] = addr;
     error_code |= (is_write << PG_ERROR_W_BIT);
     if (is_user)
         error_code |= PG_ERROR_U_MASK;
@@ -873,8 +874,16 @@ int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
         (env->efer & MSR_EFER_NXE) &&
         (env->cr[4] & CR4_PAE_MASK))
         error_code |= PG_ERROR_I_D_MASK;
+    if (INTERCEPTEDl(_exceptions, 1 << EXCP0E_PAGE)) {
+        stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), addr);
+    } else {
+        env->cr[2] = addr;
+    }
     env->error_code = error_code;
     env->exception_index = EXCP0E_PAGE;
+    /* the VMM will handle this */
+    if (INTERCEPTEDl(_exceptions, 1 << EXCP0E_PAGE))
+        return 2;
     return 1;
 }
 
diff --git a/target-i386/op.c b/target-i386/op.c
index 9b4263c..7d8950e 100644
--- a/target-i386/op.c
+++ b/target-i386/op.c
@@ -513,8 +513,6 @@ typedef union UREG64 {
 } UREG64;
 #endif
 
-#ifdef TARGET_X86_64
-
 #define PARAMQ1 \
 ({\
     UREG64 __p;\
@@ -523,6 +521,8 @@ typedef union UREG64 {
     __p.q;\
 })
 
+#ifdef TARGET_X86_64
+
 void OPPROTO op_movq_T0_im64(void)
 {
     T0 = PARAMQ1;
@@ -1242,12 +1242,52 @@ void OPPROTO op_ltr_T0(void)
     helper_ltr_T0();
 }
 
-/* CR registers access */
+/* CR registers access. */
 void OPPROTO op_movl_crN_T0(void)
 {
     helper_movl_crN_T0(PARAM1);
 }
 
+/* These pseudo-opcodes check for SVM intercepts. */
+void OPPROTO op_svm_check_intercept(void)
+{
+    A0 = PARAM1 & PARAM2;
+    svm_check_intercept(PARAMQ1);
+}
+
+void OPPROTO op_svm_check_intercept_param(void)
+{
+    A0 = PARAM1 & PARAM2;
+    svm_check_intercept_param(PARAMQ1, T1);
+}
+
+void OPPROTO op_svm_vmexit(void)
+{
+    A0 = PARAM1 & PARAM2;
+    vmexit(PARAMQ1, T1);
+}
+
+void OPPROTO op_geneflags(void)
+{
+    CC_SRC = cc_table[CC_OP].compute_all();
+}
+
+/* This pseudo-opcode checks for IO intercepts. */
+#if !defined(CONFIG_USER_ONLY)
+void OPPROTO op_svm_check_intercept_io(void)
+{
+    A0 = PARAM1 & PARAM2;
+    /* PARAMQ1 = TYPE (0 = OUT, 1 = IN; 4 = STRING; 8 = REP)
+       T0      = PORT
+       T1      = next eip */
+    stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), T1);
+    /* ASIZE does not appear on real hw */
+    svm_check_intercept_param(SVM_EXIT_IOIO,
+                              (PARAMQ1 & ~SVM_IOIO_ASIZE_MASK) |
+                              ((T0 & 0xffff) << 16));
+}
+#endif
+
 #if !defined(CONFIG_USER_ONLY)
 void OPPROTO op_movtl_T0_cr8(void)
 {
@@ -2452,3 +2492,45 @@ void OPPROTO op_emms(void)
 
 #define SHIFT 1
 #include "ops_sse.h"
+
+/* Secure Virtual Machine ops */
+
+void OPPROTO op_vmrun(void)
+{
+    helper_vmrun(EAX);
+}
+
+void OPPROTO op_vmmcall(void)
+{
+    helper_vmmcall();
+}
+
+void OPPROTO op_vmload(void)
+{
+    helper_vmload(EAX);
+}
+
+void OPPROTO op_vmsave(void)
+{
+    helper_vmsave(EAX);
+}
+
+void OPPROTO op_stgi(void)
+{
+    helper_stgi();
+}
+
+void OPPROTO op_clgi(void)
+{
+    helper_clgi();
+}
+
+void OPPROTO op_skinit(void)
+{
+    helper_skinit();
+}
+
+void OPPROTO op_invlpga(void)
+{
+    helper_invlpga();
+}
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 028cdac..d62d563 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -1995,6 +1995,98 @@ static void gen_movl_seg_T0(DisasContext *s, int seg_reg, target_ulong cur_eip)
     }
 }
 
+#ifdef TARGET_X86_64
+#define SVM_movq_T1_im(x) gen_op_movq_T1_im64((x) >> 32, x)
+#else
+#define SVM_movq_T1_im(x) gen_op_movl_T1_im(x)
+#endif
+
+static inline int
+gen_svm_check_io(DisasContext *s, target_ulong pc_start, uint64_t type)
+{
+#if !defined(CONFIG_USER_ONLY)
+    if(s->flags & (1ULL << INTERCEPT_IOIO_PROT)) {
+        if (s->cc_op != CC_OP_DYNAMIC)
+            gen_op_set_cc_op(s->cc_op);
+        SVM_movq_T1_im(s->pc - s->cs_base);
+        gen_jmp_im(pc_start - s->cs_base);
+        gen_op_geneflags();
+        gen_op_svm_check_intercept_io((uint32_t)(type >> 32), (uint32_t)type);
+        s->cc_op = CC_OP_DYNAMIC;
+        /* FIXME: maybe we could move the io intercept vector to the TB as well
+                  so we know if this is an EOB or not ... let's assume it's not
+                  for now. */
+    }
+#endif
+    return 0;
+}
+
+static inline int svm_is_rep(int prefixes)
+{
+    return ((prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) ? 8 : 0);
+}
+
+static inline int
+gen_svm_check_intercept_param(DisasContext *s, target_ulong pc_start,
+                              uint64_t type, uint64_t param)
+{
+    if(!(s->flags & (INTERCEPT_SVM_MASK)))
+	/* no SVM activated */
+        return 0;
+    switch(type) {
+        /* CRx and DRx reads/writes */
+        case SVM_EXIT_READ_CR0 ... SVM_EXIT_EXCP_BASE - 1:
+            if (s->cc_op != CC_OP_DYNAMIC) {
+                gen_op_set_cc_op(s->cc_op);
+                s->cc_op = CC_OP_DYNAMIC;
+            }
+            gen_jmp_im(pc_start - s->cs_base);
+            SVM_movq_T1_im(param);
+            gen_op_geneflags();
+            gen_op_svm_check_intercept_param((uint32_t)(type >> 32), (uint32_t)type);
+            /* this is a special case as we do not know if the interception occurs
+               so we assume there was none */
+            return 0;
+        case SVM_EXIT_MSR:
+            if(s->flags & (1ULL << INTERCEPT_MSR_PROT)) {
+                if (s->cc_op != CC_OP_DYNAMIC) {
+                    gen_op_set_cc_op(s->cc_op);
+                    s->cc_op = CC_OP_DYNAMIC;
+                }
+                gen_jmp_im(pc_start - s->cs_base);
+                SVM_movq_T1_im(param);
+                gen_op_geneflags();
+                gen_op_svm_check_intercept_param((uint32_t)(type >> 32), (uint32_t)type);
+                /* this is a special case as we do not know if the interception occurs
+                   so we assume there was none */
+                return 0;
+            }
+            break;
+        default:
+            if(s->flags & (1ULL << ((type - SVM_EXIT_INTR) + INTERCEPT_INTR))) {
+                if (s->cc_op != CC_OP_DYNAMIC) {
+                    gen_op_set_cc_op(s->cc_op);
+		    s->cc_op = CC_OP_EFLAGS;
+                }
+                gen_jmp_im(pc_start - s->cs_base);
+                SVM_movq_T1_im(param);
+                gen_op_geneflags();
+                gen_op_svm_vmexit(type >> 32, type);
+                /* we can optimize this one so TBs don't get longer
+                   than up to vmexit */
+                gen_eob(s);
+                return 1;
+            }
+    }
+    return 0;
+}
+
+static inline int
+gen_svm_check_intercept(DisasContext *s, target_ulong pc_start, uint64_t type)
+{
+    return gen_svm_check_intercept_param(s, pc_start, type, 0);
+}
+
 static inline void gen_stack_update(DisasContext *s, int addend)
 {
 #ifdef TARGET_X86_64
@@ -4880,6 +4972,12 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         else
             ot = dflag ? OT_LONG : OT_WORD;
         gen_check_io(s, ot, 1, pc_start - s->cs_base);
+        gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
+        gen_op_andl_T0_ffff();
+        if (gen_svm_check_io(s, pc_start,
+                             SVM_IOIO_TYPE_MASK | (1 << (4+ot)) |
+                             svm_is_rep(prefixes) | 4 | (1 << (7+s->aflag))))
+            break;
         if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
             gen_repz_ins(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
         } else {
@@ -4893,6 +4991,12 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         else
             ot = dflag ? OT_LONG : OT_WORD;
         gen_check_io(s, ot, 1, pc_start - s->cs_base);
+        gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
+        gen_op_andl_T0_ffff();
+        if (gen_svm_check_io(s, pc_start,
+                             (1 << (4+ot)) | svm_is_rep(prefixes) |
+                             4 | (1 << (7+s->aflag))))
+            break;
         if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
             gen_repz_outs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
         } else {
@@ -4902,6 +5006,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
 
         /************************/
         /* port I/O */
+
     case 0xe4:
     case 0xe5:
         if ((b & 1) == 0)
@@ -4911,6 +5016,10 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         val = ldub_code(s->pc++);
         gen_op_movl_T0_im(val);
         gen_check_io(s, ot, 0, pc_start - s->cs_base);
+        if (gen_svm_check_io(s, pc_start,
+                             SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes) |
+                             (1 << (4+ot))))
+            break;
         gen_op_in[ot]();
         gen_op_mov_reg_T1[ot][R_EAX]();
         break;
@@ -4923,6 +5032,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         val = ldub_code(s->pc++);
         gen_op_movl_T0_im(val);
         gen_check_io(s, ot, 0, pc_start - s->cs_base);
+        if (gen_svm_check_io(s, pc_start, svm_is_rep(prefixes) |
+                             (1 << (4+ot))))
+            break;
         gen_op_mov_TN_reg[ot][1][R_EAX]();
         gen_op_out[ot]();
         break;
@@ -4935,6 +5047,10 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
         gen_op_andl_T0_ffff();
         gen_check_io(s, ot, 0, pc_start - s->cs_base);
+        if (gen_svm_check_io(s, pc_start,
+                             SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes) |
+                             (1 << (4+ot))))
+            break;
         gen_op_in[ot]();
         gen_op_mov_reg_T1[ot][R_EAX]();
         break;
@@ -4947,6 +5063,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
         gen_op_andl_T0_ffff();
         gen_check_io(s, ot, 0, pc_start - s->cs_base);
+        if (gen_svm_check_io(s, pc_start,
+                             svm_is_rep(prefixes) | (1 << (4+ot))))
+            break;
         gen_op_mov_TN_reg[ot][1][R_EAX]();
         gen_op_out[ot]();
         break;
@@ -5004,6 +5123,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         val = 0;
         goto do_lret;
     case 0xcf: /* iret */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_IRET))
+            break;
         if (!s->pe) {
             /* real mode */
             gen_op_iret_real(s->dflag);
@@ -5125,6 +5246,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         /************************/
         /* flags */
     case 0x9c: /* pushf */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_PUSHF))
+            break;
         if (s->vm86 && s->iopl != 3) {
             gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
         } else {
@@ -5135,6 +5258,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         }
         break;
     case 0x9d: /* popf */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_POPF))
+            break;
         if (s->vm86 && s->iopl != 3) {
             gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
         } else {
@@ -5348,6 +5473,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         /* XXX: correct lock test for all insn */
         if (prefixes & PREFIX_LOCK)
             goto illegal_op;
+        if (prefixes & PREFIX_REPZ) {
+            gen_svm_check_intercept(s, pc_start, SVM_EXIT_PAUSE);
+        }
         break;
     case 0x9b: /* fwait */
         if ((s->flags & (HF_MP_MASK | HF_TS_MASK)) ==
@@ -5361,10 +5489,14 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         }
         break;
     case 0xcc: /* int3 */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SWINT))
+            break;
         gen_interrupt(s, EXCP03_INT3, pc_start - s->cs_base, s->pc - s->cs_base);
         break;
     case 0xcd: /* int N */
         val = ldub_code(s->pc++);
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SWINT))
+            break;
         if (s->vm86 && s->iopl != 3) {
             gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
         } else {
@@ -5374,12 +5506,16 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
     case 0xce: /* into */
         if (CODE64(s))
             goto illegal_op;
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SWINT))
+            break;
         if (s->cc_op != CC_OP_DYNAMIC)
             gen_op_set_cc_op(s->cc_op);
         gen_jmp_im(pc_start - s->cs_base);
         gen_op_into(s->pc - pc_start);
         break;
     case 0xf1: /* icebp (undocumented, exits to external debugger) */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_ICEBP))
+            break;
 #if 1
         gen_debug(s, pc_start - s->cs_base);
 #else
@@ -5415,6 +5551,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
                     gen_op_set_inhibit_irq();
                 /* give a chance to handle pending irqs */
                 gen_jmp_im(s->pc - s->cs_base);
+                if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VINTR))
+                    break;
                 gen_eob(s);
             } else {
                 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
@@ -5507,13 +5645,21 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         if (s->cpl != 0) {
             gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
         } else {
-            if (b & 2)
+            int retval = 0;
+            if (b & 2) {
+                retval = gen_svm_check_intercept_param(s, pc_start, SVM_EXIT_MSR, 0);
                 gen_op_rdmsr();
-            else
+            } else {
+                retval = gen_svm_check_intercept_param(s, pc_start, SVM_EXIT_MSR, 1);
                 gen_op_wrmsr();
+            }
+            if(retval)
+                gen_eob(s);
         }
         break;
     case 0x131: /* rdtsc */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_RDTSC))
+            break;
         gen_jmp_im(pc_start - s->cs_base);
         gen_op_rdtsc();
         break;
@@ -5576,12 +5722,16 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         break;
 #endif
     case 0x1a2: /* cpuid */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_CPUID))
+            break;
         gen_op_cpuid();
         break;
     case 0xf4: /* hlt */
         if (s->cpl != 0) {
             gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
         } else {
+            if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_HLT))
+                break;
             if (s->cc_op != CC_OP_DYNAMIC)
                 gen_op_set_cc_op(s->cc_op);
             gen_jmp_im(s->pc - s->cs_base);
@@ -5597,6 +5747,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         case 0: /* sldt */
             if (!s->pe || s->vm86)
                 goto illegal_op;
+            if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_LDTR_READ))
+                break;
             gen_op_movl_T0_env(offsetof(CPUX86State,ldt.selector));
             ot = OT_WORD;
             if (mod == 3)
@@ -5609,6 +5761,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             if (s->cpl != 0) {
                 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
             } else {
+                if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_LDTR_WRITE))
+                    break;
                 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
                 gen_jmp_im(pc_start - s->cs_base);
                 gen_op_lldt_T0();
@@ -5617,6 +5771,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         case 1: /* str */
             if (!s->pe || s->vm86)
                 goto illegal_op;
+            if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_TR_READ))
+                break;
             gen_op_movl_T0_env(offsetof(CPUX86State,tr.selector));
             ot = OT_WORD;
             if (mod == 3)
@@ -5629,6 +5785,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             if (s->cpl != 0) {
                 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
             } else {
+                if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_TR_WRITE))
+                    break;
                 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
                 gen_jmp_im(pc_start - s->cs_base);
                 gen_op_ltr_T0();
@@ -5660,6 +5818,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         case 0: /* sgdt */
             if (mod == 3)
                 goto illegal_op;
+            if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_GDTR_READ))
+                break;
             gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
             gen_op_movl_T0_env(offsetof(CPUX86State, gdt.limit));
             gen_op_st_T0_A0[OT_WORD + s->mem_index]();
@@ -5676,6 +5836,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
                     if (!(s->cpuid_ext_features & CPUID_EXT_MONITOR) ||
                         s->cpl != 0)
                         goto illegal_op;
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_MONITOR))
+                        break;
                     gen_jmp_im(pc_start - s->cs_base);
 #ifdef TARGET_X86_64
                     if (s->aflag == 2) {
@@ -5700,6 +5862,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
                         gen_op_set_cc_op(s->cc_op);
                         s->cc_op = CC_OP_DYNAMIC;
                     }
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_MWAIT))
+                        break;
                     gen_jmp_im(s->pc - s->cs_base);
                     gen_op_mwait();
                     gen_eob(s);
@@ -5708,6 +5872,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
                     goto illegal_op;
                 }
             } else { /* sidt */
+                if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_IDTR_READ))
+                    break;
                 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
                 gen_op_movl_T0_env(offsetof(CPUX86State, idt.limit));
                 gen_op_st_T0_A0[OT_WORD + s->mem_index]();
@@ -5720,11 +5886,63 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             break;
         case 2: /* lgdt */
         case 3: /* lidt */
-            if (mod == 3)
-                goto illegal_op;
-            if (s->cpl != 0) {
+            if (mod == 3) {
+                switch(rm) {
+                case 0: /* VMRUN */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMRUN))
+                        break;
+                    if (s->cc_op != CC_OP_DYNAMIC)
+                        gen_op_set_cc_op(s->cc_op);
+                    gen_jmp_im(s->pc - s->cs_base);
+                    gen_op_vmrun();
+                    s->cc_op = CC_OP_EFLAGS;
+                    gen_eob(s);
+                    break;
+                case 1: /* VMMCALL */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMMCALL))
+                         break;
+                    /* FIXME: cause #UD if hflags & SVM */
+                    gen_op_vmmcall();
+                    break;
+                case 2: /* VMLOAD */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMLOAD))
+                         break;
+                    gen_op_vmload();
+                    break;
+                case 3: /* VMSAVE */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMSAVE))
+                         break;
+                    gen_op_vmsave();
+                    break;
+                case 4: /* STGI */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_STGI))
+                         break;
+                    gen_op_stgi();
+                    break;
+                case 5: /* CLGI */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_CLGI))
+                         break;
+                    gen_op_clgi();
+                    break;
+                case 6: /* SKINIT */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SKINIT))
+                         break;
+                    gen_op_skinit();
+                    break;
+                case 7: /* INVLPGA */
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_INVLPGA))
+                         break;
+                    gen_op_invlpga();
+                    break;
+                default:
+                    goto illegal_op;
+                }
+            } else if (s->cpl != 0) {
                 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
             } else {
+                if (gen_svm_check_intercept(s, pc_start,
+                                            op==2 ? SVM_EXIT_GDTR_WRITE : SVM_EXIT_IDTR_WRITE))
+                    break;
                 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
                 gen_op_ld_T1_A0[OT_WORD + s->mem_index]();
                 gen_add_A0_im(s, 2);
@@ -5741,6 +5959,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             }
             break;
         case 4: /* smsw */
+            if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_CR0))
+                break;
             gen_op_movl_T0_env(offsetof(CPUX86State,cr[0]));
             gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 1);
             break;
@@ -5748,6 +5968,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             if (s->cpl != 0) {
                 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
             } else {
+                if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0))
+                    break;
                 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
                 gen_op_lmsw_T0();
                 gen_jmp_im(s->pc - s->cs_base);
@@ -5772,6 +5994,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
                         goto illegal_op;
                     }
                 } else {
+                    if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_INVLPG))
+                        break;
                     gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
                     gen_op_invlpg_A0();
                     gen_jmp_im(s->pc - s->cs_base);
@@ -5788,6 +6012,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         if (s->cpl != 0) {
             gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
         } else {
+            if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_INVD))
+                break;
             /* nothing to do */
         }
         break;
@@ -5908,11 +6134,13 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             case 4:
             case 8:
                 if (b & 2) {
+                    gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0 + reg);
                     gen_op_mov_TN_reg[ot][0][rm]();
                     gen_op_movl_crN_T0(reg);
                     gen_jmp_im(s->pc - s->cs_base);
                     gen_eob(s);
                 } else {
+                    gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_CR0 + reg);
 #if !defined(CONFIG_USER_ONLY)
                     if (reg == 8)
                         gen_op_movtl_T0_cr8();
@@ -5945,11 +6173,13 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             if (reg == 4 || reg == 5 || reg >= 8)
                 goto illegal_op;
             if (b & 2) {
+                gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_DR0 + reg);
                 gen_op_mov_TN_reg[ot][0][rm]();
                 gen_op_movl_drN_T0(reg);
                 gen_jmp_im(s->pc - s->cs_base);
                 gen_eob(s);
             } else {
+                gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_DR0 + reg);
                 gen_op_movtl_T0_env(offsetof(CPUX86State,dr[reg]));
                 gen_op_mov_reg_T0[ot][rm]();
             }
@@ -5959,6 +6189,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         if (s->cpl != 0) {
             gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
         } else {
+            gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0);
             gen_op_clts();
             /* abort block because static cpu state changed */
             gen_jmp_im(s->pc - s->cs_base);
@@ -6050,6 +6281,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         /* ignore for now */
         break;
     case 0x1aa: /* rsm */
+        if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_RSM))
+            break;
         if (!(s->flags & HF_SMM_MASK))
             goto illegal_op;
         if (s->cc_op != CC_OP_DYNAMIC) {