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i386/kvm: convert hyperv enlightenments properties from bools to bits

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Representing Hyper-V properties as bits will allow us to check features
and dependencies between them in a natural way.

Suggested-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20190517141924.19024-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vitaly Kuznetsov 2019-05-17 16:19:16 +02:00 committed by Paolo Bonzini
parent 6f38dca615
commit 2d384d7c83
6 changed files with 91 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hw/i386/pc.c
View File

@ -2386,7 +2386,8 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
}
cpu->thread_id = topo.smt_id;
if (cpu->hyperv_vpindex && !kvm_hv_vpindex_settable()) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX) &&
!kvm_hv_vpindex_settable()) {
error_setg(errp, "kernel doesn't allow setting HyperV VP_INDEX");
return;
}

44
target/i386/cpu.c
View File

@ -5853,21 +5853,37 @@ static Property x86_cpu_properties[] = {
#endif
DEFINE_PROP_INT32("node-id", X86CPU, node_id, CPU_UNSET_NUMA_NODE_ID),
DEFINE_PROP_BOOL("pmu", X86CPU, enable_pmu, false),
{ .name = "hv-spinlocks", .info = &qdev_prop_spinlocks },
DEFINE_PROP_BOOL("hv-relaxed", X86CPU, hyperv_relaxed_timing, false),
DEFINE_PROP_BOOL("hv-vapic", X86CPU, hyperv_vapic, false),
DEFINE_PROP_BOOL("hv-time", X86CPU, hyperv_time, false),
DEFINE_PROP_BOOL("hv-crash", X86CPU, hyperv_crash, false),
DEFINE_PROP_BOOL("hv-reset", X86CPU, hyperv_reset, false),
DEFINE_PROP_BOOL("hv-vpindex", X86CPU, hyperv_vpindex, false),
DEFINE_PROP_BOOL("hv-runtime", X86CPU, hyperv_runtime, false),
DEFINE_PROP_BOOL("hv-synic", X86CPU, hyperv_synic, false),
DEFINE_PROP_BOOL("hv-stimer", X86CPU, hyperv_stimer, false),
DEFINE_PROP_BOOL("hv-frequencies", X86CPU, hyperv_frequencies, false),
DEFINE_PROP_BOOL("hv-reenlightenment", X86CPU, hyperv_reenlightenment, false),
DEFINE_PROP_BOOL("hv-tlbflush", X86CPU, hyperv_tlbflush, false),
DEFINE_PROP_BOOL("hv-evmcs", X86CPU, hyperv_evmcs, false),
DEFINE_PROP_BOOL("hv-ipi", X86CPU, hyperv_ipi, false),
DEFINE_PROP_BIT64("hv-relaxed", X86CPU, hyperv_features,
HYPERV_FEAT_RELAXED, 0),
DEFINE_PROP_BIT64("hv-vapic", X86CPU, hyperv_features,
HYPERV_FEAT_VAPIC, 0),
DEFINE_PROP_BIT64("hv-time", X86CPU, hyperv_features,
HYPERV_FEAT_TIME, 0),
DEFINE_PROP_BIT64("hv-crash", X86CPU, hyperv_features,
HYPERV_FEAT_CRASH, 0),
DEFINE_PROP_BIT64("hv-reset", X86CPU, hyperv_features,
HYPERV_FEAT_RESET, 0),
DEFINE_PROP_BIT64("hv-vpindex", X86CPU, hyperv_features,
HYPERV_FEAT_VPINDEX, 0),
DEFINE_PROP_BIT64("hv-runtime", X86CPU, hyperv_features,
HYPERV_FEAT_RUNTIME, 0),
DEFINE_PROP_BIT64("hv-synic", X86CPU, hyperv_features,
HYPERV_FEAT_SYNIC, 0),
DEFINE_PROP_BIT64("hv-stimer", X86CPU, hyperv_features,
HYPERV_FEAT_STIMER, 0),
DEFINE_PROP_BIT64("hv-frequencies", X86CPU, hyperv_features,
HYPERV_FEAT_FREQUENCIES, 0),
DEFINE_PROP_BIT64("hv-reenlightenment", X86CPU, hyperv_features,
HYPERV_FEAT_REENLIGHTENMENT, 0),
DEFINE_PROP_BIT64("hv-tlbflush", X86CPU, hyperv_features,
HYPERV_FEAT_TLBFLUSH, 0),
DEFINE_PROP_BIT64("hv-evmcs", X86CPU, hyperv_features,
HYPERV_FEAT_EVMCS, 0),
DEFINE_PROP_BIT64("hv-ipi", X86CPU, hyperv_features,
HYPERV_FEAT_IPI, 0),
DEFINE_PROP_BOOL("check", X86CPU, check_cpuid, true),
DEFINE_PROP_BOOL("enforce", X86CPU, enforce_cpuid, false),
DEFINE_PROP_BOOL("kvm", X86CPU, expose_kvm, true),

37
target/i386/cpu.h
View File

@ -734,6 +734,22 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS];
#define MSR_ARCH_CAP_SKIP_L1DFL_VMENTRY (1U << 3)
#define MSR_ARCH_CAP_SSB_NO (1U << 4)
/* Supported Hyper-V Enlightenments */
#define HYPERV_FEAT_RELAXED 0
#define HYPERV_FEAT_VAPIC 1
#define HYPERV_FEAT_TIME 2
#define HYPERV_FEAT_CRASH 3
#define HYPERV_FEAT_RESET 4
#define HYPERV_FEAT_VPINDEX 5
#define HYPERV_FEAT_RUNTIME 6
#define HYPERV_FEAT_SYNIC 7
#define HYPERV_FEAT_STIMER 8
#define HYPERV_FEAT_FREQUENCIES 9
#define HYPERV_FEAT_REENLIGHTENMENT 10
#define HYPERV_FEAT_TLBFLUSH 11
#define HYPERV_FEAT_EVMCS 12
#define HYPERV_FEAT_IPI 13
#ifndef HYPERV_SPINLOCK_NEVER_RETRY
#define HYPERV_SPINLOCK_NEVER_RETRY 0xFFFFFFFF
#endif
@ -1370,23 +1386,11 @@ struct X86CPU {
CPUNegativeOffsetState neg;
CPUX86State env;
bool hyperv_vapic;
bool hyperv_relaxed_timing;
int hyperv_spinlock_attempts;
char *hyperv_vendor_id;
bool hyperv_time;
bool hyperv_crash;
bool hyperv_reset;
bool hyperv_vpindex;
bool hyperv_runtime;
bool hyperv_synic;
bool hyperv_synic_kvm_only;
bool hyperv_stimer;
bool hyperv_frequencies;
bool hyperv_reenlightenment;
bool hyperv_tlbflush;
bool hyperv_evmcs;
bool hyperv_ipi;
uint64_t hyperv_features;
bool check_cpuid;
bool enforce_cpuid;
bool expose_kvm;
@ -1906,4 +1910,9 @@ void x86_cpu_xrstor_all_areas(X86CPU *cpu, const X86XSaveArea *buf);
void x86_cpu_xsave_all_areas(X86CPU *cpu, X86XSaveArea *buf);
void x86_update_hflags(CPUX86State* env);
static inline bool hyperv_feat_enabled(X86CPU *cpu, int feat)
{
return !!(cpu->hyperv_features & BIT(feat));
}
#endif /* I386_CPU_H */

2
target/i386/hyperv.c
View File

@ -52,7 +52,7 @@ int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit)
switch (exit->type) {
case KVM_EXIT_HYPERV_SYNIC:
if (!cpu->hyperv_synic) {
if (!hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
return -1;
}

83
target/i386/kvm.c
View File

@ -634,28 +634,12 @@ unsigned long kvm_arch_vcpu_id(CPUState *cs)
#define KVM_CPUID_SIGNATURE_NEXT 0x40000100
#endif
static bool hyperv_hypercall_available(X86CPU *cpu)
{
return cpu->hyperv_vapic ||
(cpu->hyperv_spinlock_attempts != HYPERV_SPINLOCK_NEVER_RETRY);
}
static bool hyperv_enabled(X86CPU *cpu)
{
CPUState *cs = CPU(cpu);
return kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV) > 0 &&
(hyperv_hypercall_available(cpu) ||
cpu->hyperv_time ||
cpu->hyperv_relaxed_timing ||
cpu->hyperv_crash ||
cpu->hyperv_reset ||
cpu->hyperv_vpindex ||
cpu->hyperv_runtime ||
cpu->hyperv_synic ||
cpu->hyperv_stimer ||
cpu->hyperv_reenlightenment ||
cpu->hyperv_tlbflush ||
cpu->hyperv_ipi);
((cpu->hyperv_spinlock_attempts != HYPERV_SPINLOCK_NEVER_RETRY) ||
cpu->hyperv_features);
}
static int kvm_arch_set_tsc_khz(CPUState *cs)
@ -704,14 +688,14 @@ static int hyperv_handle_properties(CPUState *cs)
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
if (cpu->hyperv_relaxed_timing) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_RELAXED)) {
env->features[FEAT_HYPERV_EAX] |= HV_HYPERCALL_AVAILABLE;
}
if (cpu->hyperv_vapic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VAPIC)) {
env->features[FEAT_HYPERV_EAX] |= HV_HYPERCALL_AVAILABLE;
env->features[FEAT_HYPERV_EAX] |= HV_APIC_ACCESS_AVAILABLE;
}
if (cpu->hyperv_time) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_TIME)) {
if (kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV_TIME) <= 0) {
fprintf(stderr, "Hyper-V clocksources "
"(requested by 'hv-time' cpu flag) "
@ -722,7 +706,7 @@ static int hyperv_handle_properties(CPUState *cs)
env->features[FEAT_HYPERV_EAX] |= HV_TIME_REF_COUNT_AVAILABLE;
env->features[FEAT_HYPERV_EAX] |= HV_REFERENCE_TSC_AVAILABLE;
}
if (cpu->hyperv_frequencies) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_FREQUENCIES)) {
if (!has_msr_hv_frequencies) {
fprintf(stderr, "Hyper-V frequency MSRs "
"(requested by 'hv-frequencies' cpu flag) "
@ -732,7 +716,7 @@ static int hyperv_handle_properties(CPUState *cs)
env->features[FEAT_HYPERV_EAX] |= HV_ACCESS_FREQUENCY_MSRS;
env->features[FEAT_HYPERV_EDX] |= HV_FREQUENCY_MSRS_AVAILABLE;
}
if (cpu->hyperv_crash) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_CRASH)) {
if (!has_msr_hv_crash) {
fprintf(stderr, "Hyper-V crash MSRs "
"(requested by 'hv-crash' cpu flag) "
@ -741,7 +725,7 @@ static int hyperv_handle_properties(CPUState *cs)
}
env->features[FEAT_HYPERV_EDX] |= HV_GUEST_CRASH_MSR_AVAILABLE;
}
if (cpu->hyperv_reenlightenment) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_REENLIGHTENMENT)) {
if (!has_msr_hv_reenlightenment) {
fprintf(stderr,
"Hyper-V Reenlightenment MSRs "
@ -752,7 +736,7 @@ static int hyperv_handle_properties(CPUState *cs)
env->features[FEAT_HYPERV_EAX] |= HV_ACCESS_REENLIGHTENMENTS_CONTROL;
}
env->features[FEAT_HYPERV_EDX] |= HV_CPU_DYNAMIC_PARTITIONING_AVAILABLE;
if (cpu->hyperv_reset) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_RESET)) {
if (!has_msr_hv_reset) {
fprintf(stderr, "Hyper-V reset MSR "
"(requested by 'hv-reset' cpu flag) "
@ -761,7 +745,7 @@ static int hyperv_handle_properties(CPUState *cs)
}
env->features[FEAT_HYPERV_EAX] |= HV_RESET_AVAILABLE;
}
if (cpu->hyperv_vpindex) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX)) {
if (!has_msr_hv_vpindex) {
fprintf(stderr, "Hyper-V VP_INDEX MSR "
"(requested by 'hv-vpindex' cpu flag) "
@ -770,7 +754,7 @@ static int hyperv_handle_properties(CPUState *cs)
}
env->features[FEAT_HYPERV_EAX] |= HV_VP_INDEX_AVAILABLE;
}
if (cpu->hyperv_runtime) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_RUNTIME)) {
if (!has_msr_hv_runtime) {
fprintf(stderr, "Hyper-V VP_RUNTIME MSR "
"(requested by 'hv-runtime' cpu flag) "
@ -779,10 +763,10 @@ static int hyperv_handle_properties(CPUState *cs)
}
env->features[FEAT_HYPERV_EAX] |= HV_VP_RUNTIME_AVAILABLE;
}
if (cpu->hyperv_synic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
unsigned int cap = KVM_CAP_HYPERV_SYNIC;
if (!cpu->hyperv_synic_kvm_only) {
if (!cpu->hyperv_vpindex) {
if (!hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX)) {
fprintf(stderr, "Hyper-V SynIC "
"(requested by 'hv-synic' cpu flag) "
"requires Hyper-V VP_INDEX ('hv-vpindex')\n");
@ -799,20 +783,20 @@ static int hyperv_handle_properties(CPUState *cs)
env->features[FEAT_HYPERV_EAX] |= HV_SYNIC_AVAILABLE;
}
if (cpu->hyperv_stimer) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_STIMER)) {
if (!has_msr_hv_stimer) {
fprintf(stderr, "Hyper-V timers aren't supported by kernel\n");
return -ENOSYS;
}
env->features[FEAT_HYPERV_EAX] |= HV_SYNTIMERS_AVAILABLE;
}
if (cpu->hyperv_relaxed_timing) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_RELAXED)) {
env->features[FEAT_HV_RECOMM_EAX] |= HV_RELAXED_TIMING_RECOMMENDED;
}
if (cpu->hyperv_vapic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VAPIC)) {
env->features[FEAT_HV_RECOMM_EAX] |= HV_APIC_ACCESS_RECOMMENDED;
}
if (cpu->hyperv_tlbflush) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_TLBFLUSH)) {
if (kvm_check_extension(cs->kvm_state,
KVM_CAP_HYPERV_TLBFLUSH) <= 0) {
fprintf(stderr, "Hyper-V TLB flush support "
@ -823,7 +807,7 @@ static int hyperv_handle_properties(CPUState *cs)
env->features[FEAT_HV_RECOMM_EAX] |= HV_REMOTE_TLB_FLUSH_RECOMMENDED;
env->features[FEAT_HV_RECOMM_EAX] |= HV_EX_PROCESSOR_MASKS_RECOMMENDED;
}
if (cpu->hyperv_ipi) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_IPI)) {
if (kvm_check_extension(cs->kvm_state,
KVM_CAP_HYPERV_SEND_IPI) <= 0) {
fprintf(stderr, "Hyper-V IPI send support "
@ -834,7 +818,7 @@ static int hyperv_handle_properties(CPUState *cs)
env->features[FEAT_HV_RECOMM_EAX] |= HV_CLUSTER_IPI_RECOMMENDED;
env->features[FEAT_HV_RECOMM_EAX] |= HV_EX_PROCESSOR_MASKS_RECOMMENDED;
}
if (cpu->hyperv_evmcs) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_EVMCS)) {
uint16_t evmcs_version;
if (kvm_vcpu_enable_cap(cs, KVM_CAP_HYPERV_ENLIGHTENED_VMCS, 0,
@ -856,7 +840,7 @@ static int hyperv_init_vcpu(X86CPU *cpu)
CPUState *cs = CPU(cpu);
int ret;
if (cpu->hyperv_vpindex && !hv_vpindex_settable) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX) && !hv_vpindex_settable) {
/*
* the kernel doesn't support setting vp_index; assert that its value
* is in sync
@ -881,7 +865,7 @@ static int hyperv_init_vcpu(X86CPU *cpu)
}
}
if (cpu->hyperv_synic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
uint32_t synic_cap = cpu->hyperv_synic_kvm_only ?
KVM_CAP_HYPERV_SYNIC : KVM_CAP_HYPERV_SYNIC2;
ret = kvm_vcpu_enable_cap(cs, synic_cap, 0);
@ -972,7 +956,7 @@ int kvm_arch_init_vcpu(CPUState *cs)
memset(signature, 0, 12);
memcpy(signature, cpu->hyperv_vendor_id, len);
}
c->eax = cpu->hyperv_evmcs ?
c->eax = hyperv_feat_enabled(cpu, HYPERV_FEAT_EVMCS) ?
HV_CPUID_NESTED_FEATURES : HV_CPUID_IMPLEMENT_LIMITS;
c->ebx = signature[0];
c->ecx = signature[1];
@ -1016,7 +1000,7 @@ int kvm_arch_init_vcpu(CPUState *cs)
kvm_base = KVM_CPUID_SIGNATURE_NEXT;
has_msr_hv_hypercall = true;
if (cpu->hyperv_evmcs) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_EVMCS)) {
__u32 function;
/* Create zeroed 0x40000006..0x40000009 leaves */
@ -1360,7 +1344,7 @@ void kvm_arch_reset_vcpu(X86CPU *cpu)
env->mp_state = KVM_MP_STATE_RUNNABLE;
}
if (cpu->hyperv_synic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
int i;
for (i = 0; i < ARRAY_SIZE(env->msr_hv_synic_sint); i++) {
env->msr_hv_synic_sint[i] = HV_SINT_MASKED;
@ -2100,11 +2084,11 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
kvm_msr_entry_add(cpu, HV_X64_MSR_HYPERCALL,
env->msr_hv_hypercall);
}
if (cpu->hyperv_time) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_TIME)) {
kvm_msr_entry_add(cpu, HV_X64_MSR_REFERENCE_TSC,
env->msr_hv_tsc);
}
if (cpu->hyperv_reenlightenment) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_REENLIGHTENMENT)) {
kvm_msr_entry_add(cpu, HV_X64_MSR_REENLIGHTENMENT_CONTROL,
env->msr_hv_reenlightenment_control);
kvm_msr_entry_add(cpu, HV_X64_MSR_TSC_EMULATION_CONTROL,
@ -2113,7 +2097,7 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
env->msr_hv_tsc_emulation_status);
}
}
if (cpu->hyperv_vapic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VAPIC)) {
kvm_msr_entry_add(cpu, HV_X64_MSR_APIC_ASSIST_PAGE,
env->msr_hv_vapic);
}
@ -2129,11 +2113,12 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
if (has_msr_hv_runtime) {
kvm_msr_entry_add(cpu, HV_X64_MSR_VP_RUNTIME, env->msr_hv_runtime);
}
if (cpu->hyperv_vpindex && hv_vpindex_settable) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX)
&& hv_vpindex_settable) {
kvm_msr_entry_add(cpu, HV_X64_MSR_VP_INDEX,
hyperv_vp_index(CPU(cpu)));
}
if (cpu->hyperv_synic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
int j;
kvm_msr_entry_add(cpu, HV_X64_MSR_SVERSION, HV_SYNIC_VERSION);
@ -2473,13 +2458,13 @@ static int kvm_get_msrs(X86CPU *cpu)
kvm_msr_entry_add(cpu, HV_X64_MSR_HYPERCALL, 0);
kvm_msr_entry_add(cpu, HV_X64_MSR_GUEST_OS_ID, 0);
}
if (cpu->hyperv_vapic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VAPIC)) {
kvm_msr_entry_add(cpu, HV_X64_MSR_APIC_ASSIST_PAGE, 0);
}
if (cpu->hyperv_time) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_TIME)) {
kvm_msr_entry_add(cpu, HV_X64_MSR_REFERENCE_TSC, 0);
}
if (cpu->hyperv_reenlightenment) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_REENLIGHTENMENT)) {
kvm_msr_entry_add(cpu, HV_X64_MSR_REENLIGHTENMENT_CONTROL, 0);
kvm_msr_entry_add(cpu, HV_X64_MSR_TSC_EMULATION_CONTROL, 0);
kvm_msr_entry_add(cpu, HV_X64_MSR_TSC_EMULATION_STATUS, 0);
@ -2494,7 +2479,7 @@ static int kvm_get_msrs(X86CPU *cpu)
if (has_msr_hv_runtime) {
kvm_msr_entry_add(cpu, HV_X64_MSR_VP_RUNTIME, 0);
}
if (cpu->hyperv_synic) {
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
uint32_t msr;
kvm_msr_entry_add(cpu, HV_X64_MSR_SCONTROL, 0);

2
target/i386/machine.c
View File

@ -634,7 +634,7 @@ static bool hyperv_runtime_enable_needed(void *opaque)
X86CPU *cpu = opaque;
CPUX86State *env = &cpu->env;
if (!cpu->hyperv_runtime) {
if (!hyperv_feat_enabled(cpu, HYPERV_FEAT_RUNTIME)) {
return false;
}