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Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r--arch/x86/kvm/x86.c43
1 files changed, 30 insertions, 13 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6c7266f7766d..5b8f07889f6a 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -134,8 +134,6 @@ module_param(lapic_timer_advance_ns, uint, S_IRUGO | S_IWUSR);
static bool __read_mostly vector_hashing = true;
module_param(vector_hashing, bool, S_IRUGO);
-static bool __read_mostly backwards_tsc_observed = false;
-
#define KVM_NR_SHARED_MSRS 16
struct kvm_shared_msrs_global {
@@ -452,7 +450,12 @@ EXPORT_SYMBOL_GPL(kvm_complete_insn_gp);
void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault)
{
++vcpu->stat.pf_guest;
- vcpu->arch.cr2 = fault->address;
+ vcpu->arch.exception.nested_apf =
+ is_guest_mode(vcpu) && fault->async_page_fault;
+ if (vcpu->arch.exception.nested_apf)
+ vcpu->arch.apf.nested_apf_token = fault->address;
+ else
+ vcpu->arch.cr2 = fault->address;
kvm_queue_exception_e(vcpu, PF_VECTOR, fault->error_code);
}
EXPORT_SYMBOL_GPL(kvm_inject_page_fault);
@@ -1719,7 +1722,7 @@ static void pvclock_update_vm_gtod_copy(struct kvm *kvm)
&ka->master_cycle_now);
ka->use_master_clock = host_tsc_clocksource && vcpus_matched
- && !backwards_tsc_observed
+ && !ka->backwards_tsc_observed
&& !ka->boot_vcpu_runs_old_kvmclock;
if (ka->use_master_clock)
@@ -2060,8 +2063,8 @@ static int kvm_pv_enable_async_pf(struct kvm_vcpu *vcpu, u64 data)
{
gpa_t gpa = data & ~0x3f;
- /* Bits 2:5 are reserved, Should be zero */
- if (data & 0x3c)
+ /* Bits 3:5 are reserved, Should be zero */
+ if (data & 0x38)
return 1;
vcpu->arch.apf.msr_val = data;
@@ -2077,6 +2080,7 @@ static int kvm_pv_enable_async_pf(struct kvm_vcpu *vcpu, u64 data)
return 1;
vcpu->arch.apf.send_user_only = !(data & KVM_ASYNC_PF_SEND_ALWAYS);
+ vcpu->arch.apf.delivery_as_pf_vmexit = data & KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT;
kvm_async_pf_wakeup_all(vcpu);
return 0;
}
@@ -2661,6 +2665,8 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_HYPERV_VAPIC:
case KVM_CAP_HYPERV_SPIN:
case KVM_CAP_HYPERV_SYNIC:
+ case KVM_CAP_HYPERV_SYNIC2:
+ case KVM_CAP_HYPERV_VP_INDEX:
case KVM_CAP_PCI_SEGMENT:
case KVM_CAP_DEBUGREGS:
case KVM_CAP_X86_ROBUST_SINGLESTEP:
@@ -3384,10 +3390,14 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
return -EINVAL;
switch (cap->cap) {
+ case KVM_CAP_HYPERV_SYNIC2:
+ if (cap->args[0])
+ return -EINVAL;
case KVM_CAP_HYPERV_SYNIC:
if (!irqchip_in_kernel(vcpu->kvm))
return -EINVAL;
- return kvm_hv_activate_synic(vcpu);
+ return kvm_hv_activate_synic(vcpu, cap->cap ==
+ KVM_CAP_HYPERV_SYNIC2);
default:
return -EINVAL;
}
@@ -4188,9 +4198,15 @@ long kvm_arch_vm_ioctl(struct file *filp,
goto out;
r = 0;
+ /*
+ * TODO: userspace has to take care of races with VCPU_RUN, so
+ * kvm_gen_update_masterclock() can be cut down to locked
+ * pvclock_update_vm_gtod_copy().
+ */
+ kvm_gen_update_masterclock(kvm);
now_ns = get_kvmclock_ns(kvm);
kvm->arch.kvmclock_offset += user_ns.clock - now_ns;
- kvm_gen_update_masterclock(kvm);
+ kvm_make_all_cpus_request(kvm, KVM_REQ_CLOCK_UPDATE);
break;
}
case KVM_GET_CLOCK: {
@@ -6347,10 +6363,7 @@ static int inject_pending_event(struct kvm_vcpu *vcpu, bool req_int_win)
kvm_update_dr7(vcpu);
}
- kvm_x86_ops->queue_exception(vcpu, vcpu->arch.exception.nr,
- vcpu->arch.exception.has_error_code,
- vcpu->arch.exception.error_code,
- vcpu->arch.exception.reinject);
+ kvm_x86_ops->queue_exception(vcpu);
return 0;
}
@@ -7676,6 +7689,8 @@ void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
struct msr_data msr;
struct kvm *kvm = vcpu->kvm;
+ kvm_hv_vcpu_postcreate(vcpu);
+
if (vcpu_load(vcpu))
return;
msr.data = 0x0;
@@ -7829,8 +7844,8 @@ int kvm_arch_hardware_enable(void)
*/
if (backwards_tsc) {
u64 delta_cyc = max_tsc - local_tsc;
- backwards_tsc_observed = true;
list_for_each_entry(kvm, &vm_list, vm_list) {
+ kvm->arch.backwards_tsc_observed = true;
kvm_for_each_vcpu(i, vcpu, kvm) {
vcpu->arch.tsc_offset_adjustment += delta_cyc;
vcpu->arch.last_host_tsc = local_tsc;
@@ -8576,6 +8591,7 @@ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
fault.error_code = 0;
fault.nested_page_fault = false;
fault.address = work->arch.token;
+ fault.async_page_fault = true;
kvm_inject_page_fault(vcpu, &fault);
}
}
@@ -8598,6 +8614,7 @@ void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
fault.error_code = 0;
fault.nested_page_fault = false;
fault.address = work->arch.token;
+ fault.async_page_fault = true;
kvm_inject_page_fault(vcpu, &fault);
}
vcpu->arch.apf.halted = false;