Differential D13229 Diff 35695 sys/amd64/vmm/intel/vmx.c

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sys/amd64/vmm/intel/vmx.c

Show First 20 Lines • Show All 90 Lines • ▼ Show 20 Lines	#define PROCBASED_CTLS_ZERO_SETTING \
(PROCBASED_CR3_LOAD_EXITING \| \		(PROCBASED_CR3_LOAD_EXITING \| \
PROCBASED_CR3_STORE_EXITING \| \		PROCBASED_CR3_STORE_EXITING \| \
PROCBASED_IO_BITMAPS)		PROCBASED_IO_BITMAPS)

#define PROCBASED_CTLS2_ONE_SETTING PROCBASED2_ENABLE_EPT		#define PROCBASED_CTLS2_ONE_SETTING PROCBASED2_ENABLE_EPT
#define PROCBASED_CTLS2_ZERO_SETTING 0		#define PROCBASED_CTLS2_ZERO_SETTING 0

#define VM_EXIT_CTLS_ONE_SETTING \		#define VM_EXIT_CTLS_ONE_SETTING \
(VM_EXIT_HOST_LMA \| \		(VM_EXIT_SAVE_DEBUG_CONTROLS \| \
		VM_EXIT_HOST_LMA \| \
VM_EXIT_SAVE_EFER \| \		VM_EXIT_SAVE_EFER \| \
VM_EXIT_LOAD_EFER \| \		VM_EXIT_LOAD_EFER \| \
VM_EXIT_ACKNOWLEDGE_INTERRUPT)		VM_EXIT_ACKNOWLEDGE_INTERRUPT)

#define VM_EXIT_CTLS_ZERO_SETTING VM_EXIT_SAVE_DEBUG_CONTROLS		#define VM_EXIT_CTLS_ZERO_SETTING 0

#define VM_ENTRY_CTLS_ONE_SETTING (VM_ENTRY_LOAD_EFER)		#define VM_ENTRY_CTLS_ONE_SETTING \
		(VM_ENTRY_LOAD_DEBUG_CONTROLS \| \
		VM_ENTRY_LOAD_EFER)

#define VM_ENTRY_CTLS_ZERO_SETTING \		#define VM_ENTRY_CTLS_ZERO_SETTING \
(VM_ENTRY_LOAD_DEBUG_CONTROLS \| \		(VM_ENTRY_INTO_SMM \| \
VM_ENTRY_INTO_SMM \| \
VM_ENTRY_DEACTIVATE_DUAL_MONITOR)		VM_ENTRY_DEACTIVATE_DUAL_MONITOR)

#define HANDLED 1		#define HANDLED 1
#define UNHANDLED 0		#define UNHANDLED 0

static MALLOC_DEFINE(M_VMX, "vmx", "vmx");		static MALLOC_DEFINE(M_VMX, "vmx", "vmx");
static MALLOC_DEFINE(M_VLAPIC, "vlapic", "vlapic");		static MALLOC_DEFINE(M_VLAPIC, "vlapic", "vlapic");

▲ Show 20 Lines • Show All 2,445 Lines • ▼ Show 20 Lines	vmx_exit_handle_nmi(struct vmx vmx, int vcpuid, struct vm_exit vmexit)
if ((intr_info & VMCS_INTR_T_MASK) == VMCS_INTR_T_NMI) {		if ((intr_info & VMCS_INTR_T_MASK) == VMCS_INTR_T_NMI) {
KASSERT((intr_info & 0xff) == IDT_NMI, ("VM exit due "		KASSERT((intr_info & 0xff) == IDT_NMI, ("VM exit due "
"to NMI has invalid vector: %#x", intr_info));		"to NMI has invalid vector: %#x", intr_info));
VCPU_CTR0(vmx->vm, vcpuid, "Vectoring to NMI handler");		VCPU_CTR0(vmx->vm, vcpuid, "Vectoring to NMI handler");
__asm __volatile("int $2");		__asm __volatile("int $2");
}		}
}		}

		static __inline void
		vmx_dr_enter_guest(struct vmxctx *vmxctx)
		{
		register_t rflags;

		/* Save host control debug registers. */
		vmxctx->host_dr7 = rdr7();
		vmxctx->host_debugctl = rdmsr(MSR_DEBUGCTLMSR);

		/*
		* Disable debugging in DR7 and DEBUGCTL to avoid triggering
		* exceptions in the host based on the guest DRx values. The
		* guest DR7 and DEBUGCTL are saved/restored in the VMCS.
		*/
		load_dr7(0);
		wrmsr(MSR_DEBUGCTLMSR, 0);

		/*
		* Disable single stepping the kernel to avoid corrupting the
		* guest DR6. A debugger might still be able to corrupt the
		* guest DR6 by setting a breakpoint after this point and then
		* single stepping.
		*/
		rflags = read_rflags();
		vmxctx->host_tf = rflags & PSL_T;
		write_rflags(rflags & ~PSL_T);

		/* Save host debug registers. */
		vmxctx->host_dr0 = rdr0();
		vmxctx->host_dr1 = rdr1();
		vmxctx->host_dr2 = rdr2();
		vmxctx->host_dr3 = rdr3();
		vmxctx->host_dr6 = rdr6();

		/* Restore guest debug registers. */
		load_dr0(vmxctx->guest_dr0);
		load_dr1(vmxctx->guest_dr1);
		load_dr2(vmxctx->guest_dr2);
		load_dr3(vmxctx->guest_dr3);
		load_dr6(vmxctx->guest_dr6);
		}

		static __inline void
		vmx_dr_leave_guest(struct vmxctx *vmxctx)
		{

		/* Save guest debug registers. */
		vmxctx->guest_dr0 = rdr0();
		vmxctx->guest_dr1 = rdr1();
		vmxctx->guest_dr2 = rdr2();
		vmxctx->guest_dr3 = rdr3();
		vmxctx->guest_dr6 = rdr6();

		/*
		* Restore host debug registers. Restore DR7, DEBUGCTL, and
		* PSL_T last.
		*/
		load_dr0(vmxctx->host_dr0);
		load_dr1(vmxctx->host_dr1);
		load_dr2(vmxctx->host_dr2);
		load_dr3(vmxctx->host_dr3);
		load_dr6(vmxctx->host_dr6);
		wrmsr(MSR_DEBUGCTLMSR, vmxctx->host_debugctl);
		load_dr7(vmxctx->host_dr7);
		write_rflags(read_rflags() \| vmxctx->host_tf);
		}

static int		static int
vmx_run(void *arg, int vcpu, register_t rip, pmap_t pmap,		vmx_run(void *arg, int vcpu, register_t rip, pmap_t pmap,
struct vm_eventinfo *evinfo)		struct vm_eventinfo *evinfo)
{		{
int rc, handled, launched;		int rc, handled, launched;
struct vmx *vmx;		struct vmx *vmx;
struct vm *vm;		struct vm *vm;
struct vmxctx *vmxctx;		struct vmxctx *vmxctx;
▲ Show 20 Lines • Show All 82 Lines • ▼ Show 20 Lines	if (vcpu_should_yield(vm, vcpu)) {
enable_intr();		enable_intr();
vm_exit_astpending(vmx->vm, vcpu, rip);		vm_exit_astpending(vmx->vm, vcpu, rip);
vmx_astpending_trace(vmx, vcpu, rip);		vmx_astpending_trace(vmx, vcpu, rip);
handled = HANDLED;		handled = HANDLED;
break;		break;
}		}

vmx_run_trace(vmx, vcpu);		vmx_run_trace(vmx, vcpu);
		vmx_dr_enter_guest(vmxctx);
rc = vmx_enter_guest(vmxctx, vmx, launched);		rc = vmx_enter_guest(vmxctx, vmx, launched);
		vmx_dr_leave_guest(vmxctx);

/* Collect some information for VM exit processing */		/* Collect some information for VM exit processing */
vmexit->rip = rip = vmcs_guest_rip();		vmexit->rip = rip = vmcs_guest_rip();
vmexit->inst_length = vmexit_instruction_length();		vmexit->inst_length = vmexit_instruction_length();
vmexit->u.vmx.exit_reason = exit_reason = vmcs_exit_reason();		vmexit->u.vmx.exit_reason = exit_reason = vmcs_exit_reason();
vmexit->u.vmx.exit_qualification = vmcs_exit_qualification();		vmexit->u.vmx.exit_qualification = vmcs_exit_qualification();

/* Update 'nextrip' */		/* Update 'nextrip' */
▲ Show 20 Lines • Show All 83 Lines • ▼ Show 20 Lines	vmxctx_regptr(struct vmxctx *vmxctx, int reg)
case VM_REG_GUEST_R13:		case VM_REG_GUEST_R13:
return (&vmxctx->guest_r13);		return (&vmxctx->guest_r13);
case VM_REG_GUEST_R14:		case VM_REG_GUEST_R14:
return (&vmxctx->guest_r14);		return (&vmxctx->guest_r14);
case VM_REG_GUEST_R15:		case VM_REG_GUEST_R15:
return (&vmxctx->guest_r15);		return (&vmxctx->guest_r15);
case VM_REG_GUEST_CR2:		case VM_REG_GUEST_CR2:
return (&vmxctx->guest_cr2);		return (&vmxctx->guest_cr2);
		case VM_REG_GUEST_DR0:
		return (&vmxctx->guest_dr0);
		case VM_REG_GUEST_DR1:
		return (&vmxctx->guest_dr1);
		case VM_REG_GUEST_DR2:
		return (&vmxctx->guest_dr2);
		case VM_REG_GUEST_DR3:
		return (&vmxctx->guest_dr3);
		case VM_REG_GUEST_DR6:
		return (&vmxctx->guest_dr6);
default:		default:
break;		break;
}		}
return (NULL);		return (NULL);
}		}

static int		static int
vmxctx_getreg(struct vmxctx vmxctx, int reg, uint64_t retval)		vmxctx_getreg(struct vmxctx vmxctx, int reg, uint64_t retval)
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