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Merge branch 'linus' into x86/fpu, to resolve conflicts

Browse Source 
Conflicts:
	arch/x86/kernel/fpu/core.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2016-11-23 07:18:09 +01:00
parent af25ed59b5 23400ac997
commit 064e6a8ba6
781 changed files with 9424 additions and 5135 deletions
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2
arch/x86/kvm/emulate.c
View File

@@ -5045,7 +5045,7 @@ done_prefixes:
/* Decode and fetch the destination operand: register or memory. */
rc = decode_operand(ctxt, &ctxt->dst, (ctxt->d >> DstShift) & OpMask);
if (ctxt->rip_relative)
if (ctxt->rip_relative && likely(ctxt->memopp))
ctxt->memopp->addr.mem.ea = address_mask(ctxt,
ctxt->memopp->addr.mem.ea + ctxt->_eip);

58
arch/x86/kvm/irq_comm.c
View File

@@ -156,6 +156,16 @@ int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
}
static int kvm_hv_set_sint(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int irq_source_id, int level,
bool line_status)
{
if (!level)
return -1;
return kvm_hv_synic_set_irq(kvm, e->hv_sint.vcpu, e->hv_sint.sint);
}
int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int irq_source_id, int level,
bool line_status)
@@ -163,18 +173,26 @@ int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e,
struct kvm_lapic_irq irq;
int r;
if (unlikely(e->type != KVM_IRQ_ROUTING_MSI))
return -EWOULDBLOCK;
switch (e->type) {
case KVM_IRQ_ROUTING_HV_SINT:
return kvm_hv_set_sint(e, kvm, irq_source_id, level,
line_status);
if (kvm_msi_route_invalid(kvm, e))
return -EINVAL;
case KVM_IRQ_ROUTING_MSI:
if (kvm_msi_route_invalid(kvm, e))
return -EINVAL;
kvm_set_msi_irq(kvm, e, &irq);
kvm_set_msi_irq(kvm, e, &irq);
if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
return r;
else
return -EWOULDBLOCK;
if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
return r;
break;
default:
break;
}
return -EWOULDBLOCK;
}
int kvm_request_irq_source_id(struct kvm *kvm)
@@ -254,16 +272,6 @@ void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
srcu_read_unlock(&kvm->irq_srcu, idx);
}
static int kvm_hv_set_sint(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int irq_source_id, int level,
bool line_status)
{
if (!level)
return -1;
return kvm_hv_synic_set_irq(kvm, e->hv_sint.vcpu, e->hv_sint.sint);
}
int kvm_set_routing_entry(struct kvm *kvm,
struct kvm_kernel_irq_routing_entry *e,
const struct kvm_irq_routing_entry *ue)
@@ -423,18 +431,6 @@ void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu,
srcu_read_unlock(&kvm->irq_srcu, idx);
}
int kvm_arch_set_irq(struct kvm_kernel_irq_routing_entry *irq, struct kvm *kvm,
int irq_source_id, int level, bool line_status)
{
switch (irq->type) {
case KVM_IRQ_ROUTING_HV_SINT:
return kvm_hv_set_sint(irq, kvm, irq_source_id, level,
line_status);
default:
return -EWOULDBLOCK;
}
}
void kvm_arch_irq_routing_update(struct kvm *kvm)
{
kvm_hv_irq_routing_update(kvm);

23
arch/x86/kvm/svm.c
View File

@@ -1138,21 +1138,6 @@ static void svm_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
mark_dirty(svm->vmcb, VMCB_INTERCEPTS);
}
static void svm_adjust_tsc_offset_guest(struct kvm_vcpu *vcpu, s64 adjustment)
{
struct vcpu_svm *svm = to_svm(vcpu);
svm->vmcb->control.tsc_offset += adjustment;
if (is_guest_mode(vcpu))
svm->nested.hsave->control.tsc_offset += adjustment;
else
trace_kvm_write_tsc_offset(vcpu->vcpu_id,
svm->vmcb->control.tsc_offset - adjustment,
svm->vmcb->control.tsc_offset);
mark_dirty(svm->vmcb, VMCB_INTERCEPTS);
}
static void avic_init_vmcb(struct vcpu_svm *svm)
{
struct vmcb *vmcb = svm->vmcb;
@@ -3449,12 +3434,6 @@ static int cr8_write_interception(struct vcpu_svm *svm)
return 0;
}
static u64 svm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc)
{
struct vmcb *vmcb = get_host_vmcb(to_svm(vcpu));
return vmcb->control.tsc_offset + host_tsc;
}
static int svm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{
struct vcpu_svm *svm = to_svm(vcpu);
@@ -5422,8 +5401,6 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.has_wbinvd_exit = svm_has_wbinvd_exit,
.write_tsc_offset = svm_write_tsc_offset,
.adjust_tsc_offset_guest = svm_adjust_tsc_offset_guest,
.read_l1_tsc = svm_read_l1_tsc,
.set_tdp_cr3 = set_tdp_cr3,

65
arch/x86/kvm/vmx.c
View File

@@ -187,6 +187,7 @@ struct vmcs {
*/
struct loaded_vmcs {
struct vmcs *vmcs;
struct vmcs *shadow_vmcs;
int cpu;
int launched;
struct list_head loaded_vmcss_on_cpu_link;
@@ -411,7 +412,6 @@ struct nested_vmx {
* memory during VMXOFF, VMCLEAR, VMPTRLD.
*/
struct vmcs12 *cached_vmcs12;
struct vmcs *current_shadow_vmcs;
/*
* Indicates if the shadow vmcs must be updated with the
* data hold by vmcs12
@@ -421,7 +421,6 @@ struct nested_vmx {
/* vmcs02_list cache of VMCSs recently used to run L2 guests */
struct list_head vmcs02_pool;
int vmcs02_num;
u64 vmcs01_tsc_offset;
bool change_vmcs01_virtual_x2apic_mode;
/* L2 must run next, and mustn't decide to exit to L1. */
bool nested_run_pending;
@@ -1419,6 +1418,8 @@ static void vmcs_clear(struct vmcs *vmcs)
static inline void loaded_vmcs_init(struct loaded_vmcs *loaded_vmcs)
{
vmcs_clear(loaded_vmcs->vmcs);
if (loaded_vmcs->shadow_vmcs && loaded_vmcs->launched)
vmcs_clear(loaded_vmcs->shadow_vmcs);
loaded_vmcs->cpu = -1;
loaded_vmcs->launched = 0;
}
@@ -2598,20 +2599,6 @@ static u64 guest_read_tsc(struct kvm_vcpu *vcpu)
return kvm_scale_tsc(vcpu, host_tsc) + tsc_offset;
}
/*
* Like guest_read_tsc, but always returns L1's notion of the timestamp
* counter, even if a nested guest (L2) is currently running.
*/
static u64 vmx_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc)
{
u64 tsc_offset;
tsc_offset = is_guest_mode(vcpu) ?
to_vmx(vcpu)->nested.vmcs01_tsc_offset :
vmcs_read64(TSC_OFFSET);
return host_tsc + tsc_offset;
}
/*
* writes 'offset' into guest's timestamp counter offset register
*/
@@ -2625,7 +2612,6 @@ static void vmx_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
* to the newly set TSC to get L2's TSC.
*/
struct vmcs12 *vmcs12;
to_vmx(vcpu)->nested.vmcs01_tsc_offset = offset;
/* recalculate vmcs02.TSC_OFFSET: */
vmcs12 = get_vmcs12(vcpu);
vmcs_write64(TSC_OFFSET, offset +
@@ -2638,19 +2624,6 @@ static void vmx_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
}
}
static void vmx_adjust_tsc_offset_guest(struct kvm_vcpu *vcpu, s64 adjustment)
{
u64 offset = vmcs_read64(TSC_OFFSET);
vmcs_write64(TSC_OFFSET, offset + adjustment);
if (is_guest_mode(vcpu)) {
/* Even when running L2, the adjustment needs to apply to L1 */
to_vmx(vcpu)->nested.vmcs01_tsc_offset += adjustment;
} else
trace_kvm_write_tsc_offset(vcpu->vcpu_id, offset,
offset + adjustment);
}
static bool guest_cpuid_has_vmx(struct kvm_vcpu *vcpu)
{
struct kvm_cpuid_entry2 *best = kvm_find_cpuid_entry(vcpu, 1, 0);
@@ -3556,6 +3529,7 @@ static void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
loaded_vmcs_clear(loaded_vmcs);
free_vmcs(loaded_vmcs->vmcs);
loaded_vmcs->vmcs = NULL;
WARN_ON(loaded_vmcs->shadow_vmcs != NULL);
}
static void free_kvm_area(void)
@@ -6692,6 +6666,7 @@ static struct loaded_vmcs *nested_get_current_vmcs02(struct vcpu_vmx *vmx)
if (!item)
return NULL;
item->vmcs02.vmcs = alloc_vmcs();
item->vmcs02.shadow_vmcs = NULL;
if (!item->vmcs02.vmcs) {
kfree(item);
return NULL;
@@ -7068,7 +7043,7 @@ static int handle_vmon(struct kvm_vcpu *vcpu)
shadow_vmcs->revision_id |= (1u << 31);
/* init shadow vmcs */
vmcs_clear(shadow_vmcs);
vmx->nested.current_shadow_vmcs = shadow_vmcs;
vmx->vmcs01.shadow_vmcs = shadow_vmcs;
}
INIT_LIST_HEAD(&(vmx->nested.vmcs02_pool));
@@ -7170,8 +7145,11 @@ static void free_nested(struct vcpu_vmx *vmx)
free_page((unsigned long)vmx->nested.msr_bitmap);
vmx->nested.msr_bitmap = NULL;
}
if (enable_shadow_vmcs)
free_vmcs(vmx->nested.current_shadow_vmcs);
if (enable_shadow_vmcs) {
vmcs_clear(vmx->vmcs01.shadow_vmcs);
free_vmcs(vmx->vmcs01.shadow_vmcs);
vmx->vmcs01.shadow_vmcs = NULL;
}
kfree(vmx->nested.cached_vmcs12);
/* Unpin physical memory we referred to in current vmcs02 */
if (vmx->nested.apic_access_page) {
@@ -7348,7 +7326,7 @@ static void copy_shadow_to_vmcs12(struct vcpu_vmx *vmx)
int i;
unsigned long field;
u64 field_value;
struct vmcs *shadow_vmcs = vmx->nested.current_shadow_vmcs;
struct vmcs *shadow_vmcs = vmx->vmcs01.shadow_vmcs;
const unsigned long *fields = shadow_read_write_fields;
const int num_fields = max_shadow_read_write_fields;
@@ -7397,7 +7375,7 @@ static void copy_vmcs12_to_shadow(struct vcpu_vmx *vmx)
int i, q;
unsigned long field;
u64 field_value = 0;
struct vmcs *shadow_vmcs = vmx->nested.current_shadow_vmcs;
struct vmcs *shadow_vmcs = vmx->vmcs01.shadow_vmcs;
vmcs_load(shadow_vmcs);
@@ -7587,7 +7565,7 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu)
vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
SECONDARY_EXEC_SHADOW_VMCS);
vmcs_write64(VMCS_LINK_POINTER,
__pa(vmx->nested.current_shadow_vmcs));
__pa(vmx->vmcs01.shadow_vmcs));
vmx->nested.sync_shadow_vmcs = true;
}
}
@@ -7655,7 +7633,7 @@ static int handle_invept(struct kvm_vcpu *vcpu)
types = (vmx->nested.nested_vmx_ept_caps >> VMX_EPT_EXTENT_SHIFT) & 6;
if (!(types & (1UL << type))) {
if (type >= 32 || !(types & (1 << type))) {
nested_vmx_failValid(vcpu,
VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
skip_emulated_instruction(vcpu);
@@ -7718,7 +7696,7 @@ static int handle_invvpid(struct kvm_vcpu *vcpu)
types = (vmx->nested.nested_vmx_vpid_caps >> 8) & 0x7;
if (!(types & (1UL << type))) {
if (type >= 32 || !(types & (1 << type))) {
nested_vmx_failValid(vcpu,
VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
skip_emulated_instruction(vcpu);
@@ -9152,6 +9130,7 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
vmx->loaded_vmcs = &vmx->vmcs01;
vmx->loaded_vmcs->vmcs = alloc_vmcs();
vmx->loaded_vmcs->shadow_vmcs = NULL;
if (!vmx->loaded_vmcs->vmcs)
goto free_msrs;
if (!vmm_exclusive)
@@ -10057,9 +10036,9 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
vmcs_write64(TSC_OFFSET,
vmx->nested.vmcs01_tsc_offset + vmcs12->tsc_offset);
vcpu->arch.tsc_offset + vmcs12->tsc_offset);
else
vmcs_write64(TSC_OFFSET, vmx->nested.vmcs01_tsc_offset);
vmcs_write64(TSC_OFFSET, vcpu->arch.tsc_offset);
if (kvm_has_tsc_control)
decache_tsc_multiplier(vmx);
@@ -10289,8 +10268,6 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch)
enter_guest_mode(vcpu);
vmx->nested.vmcs01_tsc_offset = vmcs_read64(TSC_OFFSET);
if (!(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS))
vmx->nested.vmcs01_debugctl = vmcs_read64(GUEST_IA32_DEBUGCTL);
@@ -10814,7 +10791,7 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
load_vmcs12_host_state(vcpu, vmcs12);
/* Update any VMCS fields that might have changed while L2 ran */
vmcs_write64(TSC_OFFSET, vmx->nested.vmcs01_tsc_offset);
vmcs_write64(TSC_OFFSET, vcpu->arch.tsc_offset);
if (vmx->hv_deadline_tsc == -1)
vmcs_clear_bits(PIN_BASED_VM_EXEC_CONTROL,
PIN_BASED_VMX_PREEMPTION_TIMER);
@@ -11335,8 +11312,6 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,
.write_tsc_offset = vmx_write_tsc_offset,
.adjust_tsc_offset_guest = vmx_adjust_tsc_offset_guest,
.read_l1_tsc = vmx_read_l1_tsc,
.set_tdp_cr3 = vmx_set_cr3,

63
arch/x86/kvm/x86.c
View File

@@ -210,7 +210,18 @@ static void kvm_on_user_return(struct user_return_notifier *urn)
struct kvm_shared_msrs *locals
= container_of(urn, struct kvm_shared_msrs, urn);
struct kvm_shared_msr_values *values;
unsigned long flags;
/*
* Disabling irqs at this point since the following code could be
* interrupted and executed through kvm_arch_hardware_disable()
*/
local_irq_save(flags);
if (locals->registered) {
locals->registered = false;
user_return_notifier_unregister(urn);
}
local_irq_restore(flags);
for (slot = 0; slot < shared_msrs_global.nr; ++slot) {
values = &locals->values[slot];
if (values->host != values->curr) {
@@ -218,8 +229,6 @@ static void kvm_on_user_return(struct user_return_notifier *urn)
values->curr = values->host;
}
}
locals->registered = false;
user_return_notifier_unregister(urn);
}
static void shared_msr_update(unsigned slot, u32 msr)
@@ -1409,7 +1418,7 @@ static u64 kvm_compute_tsc_offset(struct kvm_vcpu *vcpu, u64 target_tsc)
u64 kvm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc)
{
return kvm_x86_ops->read_l1_tsc(vcpu, kvm_scale_tsc(vcpu, host_tsc));
return vcpu->arch.tsc_offset + kvm_scale_tsc(vcpu, host_tsc);
}
EXPORT_SYMBOL_GPL(kvm_read_l1_tsc);
@@ -1547,7 +1556,7 @@ EXPORT_SYMBOL_GPL(kvm_write_tsc);
static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
s64 adjustment)
{
kvm_x86_ops->adjust_tsc_offset_guest(vcpu, adjustment);
kvm_vcpu_write_tsc_offset(vcpu, vcpu->arch.tsc_offset + adjustment);
}
static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
@@ -1555,7 +1564,7 @@ static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
if (vcpu->arch.tsc_scaling_ratio != kvm_default_tsc_scaling_ratio)
WARN_ON(adjustment < 0);
adjustment = kvm_scale_tsc(vcpu, (u64) adjustment);
kvm_x86_ops->adjust_tsc_offset_guest(vcpu, adjustment);
adjust_tsc_offset_guest(vcpu, adjustment);
}
#ifdef CONFIG_X86_64
@@ -1724,18 +1733,23 @@ static void kvm_gen_update_masterclock(struct kvm *kvm)
static u64 __get_kvmclock_ns(struct kvm *kvm)
{
struct kvm_vcpu *vcpu = kvm_get_vcpu(kvm, 0);
struct kvm_arch *ka = &kvm->arch;
s64 ns;
struct pvclock_vcpu_time_info hv_clock;
if (vcpu->arch.hv_clock.flags & PVCLOCK_TSC_STABLE_BIT) {
u64 tsc = kvm_read_l1_tsc(vcpu, rdtsc());
ns = __pvclock_read_cycles(&vcpu->arch.hv_clock, tsc);
} else {
ns = ktime_get_boot_ns() + ka->kvmclock_offset;
spin_lock(&ka->pvclock_gtod_sync_lock);
if (!ka->use_master_clock) {
spin_unlock(&ka->pvclock_gtod_sync_lock);
return ktime_get_boot_ns() + ka->kvmclock_offset;
}
return ns;
hv_clock.tsc_timestamp = ka->master_cycle_now;
hv_clock.system_time = ka->master_kernel_ns + ka->kvmclock_offset;
spin_unlock(&ka->pvclock_gtod_sync_lock);
kvm_get_time_scale(NSEC_PER_SEC, __this_cpu_read(cpu_tsc_khz) * 1000LL,
&hv_clock.tsc_shift,
&hv_clock.tsc_to_system_mul);
return __pvclock_read_cycles(&hv_clock, rdtsc());
}
u64 get_kvmclock_ns(struct kvm *kvm)
@@ -2262,7 +2276,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
/* Drop writes to this legacy MSR -- see rdmsr
* counterpart for further detail.
*/
vcpu_unimpl(vcpu, "ignored wrmsr: 0x%x data %llx\n", msr, data);
vcpu_unimpl(vcpu, "ignored wrmsr: 0x%x data 0x%llx\n", msr, data);
break;
case MSR_AMD64_OSVW_ID_LENGTH:
if (!guest_cpuid_has_osvw(vcpu))
@@ -2280,11 +2294,11 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
if (kvm_pmu_is_valid_msr(vcpu, msr))
return kvm_pmu_set_msr(vcpu, msr_info);
if (!ignore_msrs) {
vcpu_unimpl(vcpu, "unhandled wrmsr: 0x%x data %llx\n",
vcpu_unimpl(vcpu, "unhandled wrmsr: 0x%x data 0x%llx\n",
msr, data);
return 1;
} else {
vcpu_unimpl(vcpu, "ignored wrmsr: 0x%x data %llx\n",
vcpu_unimpl(vcpu, "ignored wrmsr: 0x%x data 0x%llx\n",
msr, data);
break;
}
@@ -2596,7 +2610,6 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_PIT_STATE2:
case KVM_CAP_SET_IDENTITY_MAP_ADDR:
case KVM_CAP_XEN_HVM:
case KVM_CAP_ADJUST_CLOCK:
case KVM_CAP_VCPU_EVENTS:
case KVM_CAP_HYPERV:
case KVM_CAP_HYPERV_VAPIC:
@@ -2623,6 +2636,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
#endif
r = 1;
break;
case KVM_CAP_ADJUST_CLOCK:
r = KVM_CLOCK_TSC_STABLE;
break;
case KVM_CAP_X86_SMM:
/* SMBASE is usually relocated above 1M on modern chipsets,
* and SMM handlers might indeed rely on 4G segment limits,
@@ -3415,6 +3431,7 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
};
case KVM_SET_VAPIC_ADDR: {
struct kvm_vapic_addr va;
int idx;
r = -EINVAL;
if (!lapic_in_kernel(vcpu))
@@ -3422,7 +3439,9 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = -EFAULT;
if (copy_from_user(&va, argp, sizeof va))
goto out;
idx = srcu_read_lock(&vcpu->kvm->srcu);
r = kvm_lapic_set_vapic_addr(vcpu, va.vapic_addr);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
break;
}
case KVM_X86_SETUP_MCE: {
@@ -4103,9 +4122,11 @@ long kvm_arch_vm_ioctl(struct file *filp,
struct kvm_clock_data user_ns;
u64 now_ns;
now_ns = get_kvmclock_ns(kvm);
local_irq_disable();
now_ns = __get_kvmclock_ns(kvm);
user_ns.clock = now_ns;
user_ns.flags = 0;
user_ns.flags = kvm->arch.use_master_clock ? KVM_CLOCK_TSC_STABLE : 0;
local_irq_enable();
memset(&user_ns.pad, 0, sizeof(user_ns.pad));
r = -EFAULT;
@@ -7393,10 +7414,12 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
{
void *wbinvd_dirty_mask = vcpu->arch.wbinvd_dirty_mask;
kvmclock_reset(vcpu);
free_cpumask_var(vcpu->arch.wbinvd_dirty_mask);
kvm_x86_ops->vcpu_free(vcpu);
free_cpumask_var(wbinvd_dirty_mask);
}
struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,