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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-09-02 11:35:27 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-01 19:04:45 +0200 |
| commit | 050716292a63f4969b32cac32b85774521738ef5 (patch) | |
| tree | e4eb7c5cbf5f4beceb10c88b9e2ca9c275999555 /target/i386/kvm/kvm.c | |
| parent | 70367f091777419f42e5f68f4206deb641335877 (diff) | |
| download | qemu-050716292a63f4969b32cac32b85774521738ef5.zip qemu-050716292a63f4969b32cac32b85774521738ef5.tar.gz qemu-050716292a63f4969b32cac32b85774521738ef5.tar.bz2 | |
i386: Move HV_APIC_ACCESS_RECOMMENDED bit setting to hyperv_fill_cpuids()
In preparation to enabling Hyper-V + APICv/AVIC move
HV_APIC_ACCESS_RECOMMENDED setting out of kvm_hyperv_properties[]: the
'real' feature bit for the vAPIC features is HV_APIC_ACCESS_AVAILABLE,
HV_APIC_ACCESS_RECOMMENDED is a recommendation to use the feature which
we may not always want to give.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210902093530.345756-6-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/kvm/kvm.c')
| -rw-r--r-- | target/i386/kvm/kvm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index fbe6b7a..a9a8f77 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -821,9 +821,7 @@ static struct { .desc = "virtual APIC (hv-vapic)", .flags = { {.func = HV_CPUID_FEATURES, .reg = R_EAX, - .bits = HV_APIC_ACCESS_AVAILABLE}, - {.func = HV_CPUID_ENLIGHTMENT_INFO, .reg = R_EAX, - .bits = HV_APIC_ACCESS_RECOMMENDED} + .bits = HV_APIC_ACCESS_AVAILABLE} } }, [HYPERV_FEAT_TIME] = { @@ -1366,6 +1364,7 @@ static int hyperv_fill_cpuids(CPUState *cs, c->ebx |= HV_POST_MESSAGES | HV_SIGNAL_EVENTS; } + /* Not exposed by KVM but needed to make CPU hotplug in Windows work */ c->edx |= HV_CPU_DYNAMIC_PARTITIONING_AVAILABLE; @@ -1374,6 +1373,10 @@ static int hyperv_fill_cpuids(CPUState *cs, c->eax = hv_build_cpuid_leaf(cs, HV_CPUID_ENLIGHTMENT_INFO, R_EAX); c->ebx = cpu->hyperv_spinlock_attempts; + if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VAPIC)) { + c->eax |= HV_APIC_ACCESS_RECOMMENDED; + } + if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_ON) { c->eax |= HV_NO_NONARCH_CORESHARING; } else if (cpu->hyperv_no_nonarch_cs == ON_OFF_AUTO_AUTO) { |