{
return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
INTR_INFO_VALID_MASK)) ==
- (INTR_TYPE_EXCEPTION | PF_VECTOR | INTR_INFO_VALID_MASK);
+ (INTR_TYPE_HARD_EXCEPTION | PF_VECTOR | INTR_INFO_VALID_MASK);
}
static inline int is_no_device(u32 intr_info)
{
return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
INTR_INFO_VALID_MASK)) ==
- (INTR_TYPE_EXCEPTION | NM_VECTOR | INTR_INFO_VALID_MASK);
+ (INTR_TYPE_HARD_EXCEPTION | NM_VECTOR | INTR_INFO_VALID_MASK);
}
static inline int is_invalid_opcode(u32 intr_info)
{
return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
INTR_INFO_VALID_MASK)) ==
- (INTR_TYPE_EXCEPTION | UD_VECTOR | INTR_INFO_VALID_MASK);
+ (INTR_TYPE_HARD_EXCEPTION | UD_VECTOR | INTR_INFO_VALID_MASK);
}
static inline int is_external_interrupt(u32 intr_info)
eb = (1u << PF_VECTOR) | (1u << UD_VECTOR);
if (!vcpu->fpu_active)
eb |= 1u << NM_VECTOR;
- if (vcpu->guest_debug.enabled)
- eb |= 1u << DB_VECTOR;
+ if (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) {
+ if (vcpu->guest_debug &
+ (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
+ eb |= 1u << DB_VECTOR;
+ if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
+ eb |= 1u << BP_VECTOR;
+ }
if (vcpu->arch.rmode.active)
eb = ~0;
if (vm_need_ept())
bool has_error_code, u32 error_code)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
+ u32 intr_info = nr | INTR_INFO_VALID_MASK;
- if (has_error_code)
+ if (has_error_code) {
vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code);
+ intr_info |= INTR_INFO_DELIVER_CODE_MASK;
+ }
if (vcpu->arch.rmode.active) {
vmx->rmode.irq.pending = true;
vmx->rmode.irq.vector = nr;
vmx->rmode.irq.rip = kvm_rip_read(vcpu);
- if (nr == BP_VECTOR)
+ if (nr == BP_VECTOR || nr == OF_VECTOR)
vmx->rmode.irq.rip++;
- vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
- nr | INTR_TYPE_SOFT_INTR
- | (has_error_code ? INTR_INFO_DELIVER_CODE_MASK : 0)
- | INTR_INFO_VALID_MASK);
+ intr_info |= INTR_TYPE_SOFT_INTR;
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info);
vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1);
kvm_rip_write(vcpu, vmx->rmode.irq.rip - 1);
return;
}
- vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
- nr | INTR_TYPE_EXCEPTION
- | (has_error_code ? INTR_INFO_DELIVER_CODE_MASK : 0)
- | INTR_INFO_VALID_MASK);
+ if (nr == BP_VECTOR || nr == OF_VECTOR) {
+ vmcs_write32(VM_ENTRY_INSTRUCTION_LEN, 1);
+ intr_info |= INTR_TYPE_SOFT_EXCEPTION;
+ } else
+ intr_info |= INTR_TYPE_HARD_EXCEPTION;
+
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info);
}
static bool vmx_exception_injected(struct kvm_vcpu *vcpu)
}
}
-static int set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg)
+static int set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
{
- unsigned long dr7 = 0x400;
- int old_singlestep;
-
- old_singlestep = vcpu->guest_debug.singlestep;
-
- vcpu->guest_debug.enabled = dbg->enabled;
- if (vcpu->guest_debug.enabled) {
- int i;
-
- dr7 |= 0x200; /* exact */
- for (i = 0; i < 4; ++i) {
- if (!dbg->breakpoints[i].enabled)
- continue;
- vcpu->guest_debug.bp[i] = dbg->breakpoints[i].address;
- dr7 |= 2 << (i*2); /* global enable */
- dr7 |= 0 << (i*4+16); /* execution breakpoint */
- }
-
- vcpu->guest_debug.singlestep = dbg->singlestep;
- } else
- vcpu->guest_debug.singlestep = 0;
+ int old_debug = vcpu->guest_debug;
+ unsigned long flags;
- if (old_singlestep && !vcpu->guest_debug.singlestep) {
- unsigned long flags;
+ vcpu->guest_debug = dbg->control;
+ if (!(vcpu->guest_debug & KVM_GUESTDBG_ENABLE))
+ vcpu->guest_debug = 0;
- flags = vmcs_readl(GUEST_RFLAGS);
+ flags = vmcs_readl(GUEST_RFLAGS);
+ if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
+ flags |= X86_EFLAGS_TF | X86_EFLAGS_RF;
+ else if (old_debug & KVM_GUESTDBG_SINGLESTEP)
flags &= ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
- vmcs_writel(GUEST_RFLAGS, flags);
- }
+ vmcs_writel(GUEST_RFLAGS, flags);
update_exception_bitmap(vcpu);
- vmcs_writel(GUEST_DR7, dr7);
return 0;
}
{
vmx_update_window_states(vcpu);
+ if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
+ vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
+ GUEST_INTR_STATE_STI |
+ GUEST_INTR_STATE_MOV_SS);
+
if (vcpu->arch.nmi_pending && !vcpu->arch.nmi_injected) {
if (vcpu->arch.interrupt.pending) {
enable_nmi_window(vcpu);
return 0;
}
-static void kvm_guest_debug_pre(struct kvm_vcpu *vcpu)
-{
- struct kvm_guest_debug *dbg = &vcpu->guest_debug;
-
- set_debugreg(dbg->bp[0], 0);
- set_debugreg(dbg->bp[1], 1);
- set_debugreg(dbg->bp[2], 2);
- set_debugreg(dbg->bp[3], 3);
-
- if (dbg->singlestep) {
- unsigned long flags;
-
- flags = vmcs_readl(GUEST_RFLAGS);
- flags |= X86_EFLAGS_TF | X86_EFLAGS_RF;
- vmcs_writel(GUEST_RFLAGS, flags);
- }
-}
-
static int handle_rmode_exception(struct kvm_vcpu *vcpu,
int vec, u32 err_code)
{
* the required debugging infrastructure rework.
*/
switch (vec) {
- case DE_VECTOR:
case DB_VECTOR:
+ if (vcpu->guest_debug &
+ (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
+ return 0;
+ kvm_queue_exception(vcpu, vec);
+ return 1;
case BP_VECTOR:
+ if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
+ return 0;
+ /* fall through */
+ case DE_VECTOR:
case OF_VECTOR:
case BR_VECTOR:
case UD_VECTOR:
static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
- u32 intr_info, error_code;
+ u32 intr_info, ex_no, error_code;
unsigned long cr2, rip;
u32 vect_info;
enum emulation_result er;
return 1;
}
- if ((intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK)) ==
- (INTR_TYPE_EXCEPTION | 1)) {
+ ex_no = intr_info & INTR_INFO_VECTOR_MASK;
+ if (ex_no == DB_VECTOR || ex_no == BP_VECTOR) {
kvm_run->exit_reason = KVM_EXIT_DEBUG;
- return 0;
+ kvm_run->debug.arch.pc = vmcs_readl(GUEST_CS_BASE) + rip;
+ kvm_run->debug.arch.exception = ex_no;
+ } else {
+ kvm_run->exit_reason = KVM_EXIT_EXCEPTION;
+ kvm_run->ex.exception = ex_no;
+ kvm_run->ex.error_code = error_code;
}
- kvm_run->exit_reason = KVM_EXIT_EXCEPTION;
- kvm_run->ex.exception = intr_info & INTR_INFO_VECTOR_MASK;
- kvm_run->ex.error_code = error_code;
return 0;
}
vmx->vcpu.arch.nmi_injected = false;
}
kvm_clear_exception_queue(&vmx->vcpu);
- if (idtv_info_valid && type == INTR_TYPE_EXCEPTION) {
+ if (idtv_info_valid && (type == INTR_TYPE_HARD_EXCEPTION ||
+ type == INTR_TYPE_SOFT_EXCEPTION)) {
if (idt_vectoring_info & VECTORING_INFO_DELIVER_CODE_MASK) {
error = vmcs_read32(IDT_VECTORING_ERROR_CODE);
kvm_queue_exception_e(&vmx->vcpu, vector, error);
vmx_update_window_states(vcpu);
+ if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
+ vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
+ GUEST_INTR_STATE_STI |
+ GUEST_INTR_STATE_MOV_SS);
+
if (vcpu->arch.nmi_pending && !vcpu->arch.nmi_injected) {
if (vcpu->arch.interrupt.pending) {
enable_nmi_window(vcpu);
.vcpu_put = vmx_vcpu_put,
.set_guest_debug = set_guest_debug,
- .guest_debug_pre = kvm_guest_debug_pre,
.get_msr = vmx_get_msr,
.set_msr = vmx_set_msr,
.get_segment_base = vmx_get_segment_base,
git.samba.org / sfrench / cifs-2.6.git / blobdiff