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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2019-11-14 14:15:05 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-02-05 15:17:40 +0100 |
| commit | 4e19c36f2df8f84da22c7287de86729aaf3e352b (patch) | |
| tree | 0fa24010542c92fda3f605ac5cc8e5147d6ba28a /arch/x86/kvm/svm.c | |
| parent | b26a695a1d78cc415fe26d74d0463f5d887980de (diff) | |
| download | linux-4e19c36f2df8f84da22c7287de86729aaf3e352b.tar.bz2 | |
kvm: x86: Introduce APICv inhibit reason bits
There are several reasons in which a VM needs to deactivate APICv
e.g. disable APICv via parameter during module loading, or when
enable Hyper-V SynIC support. Additional inhibit reasons will be
introduced later on when dynamic APICv is supported,
Introduce KVM APICv inhibit reason bits along with a new variable,
apicv_inhibit_reasons, to help keep track of APICv state for each VM,
Initially, the APICV_INHIBIT_REASON_DISABLE bit is used to indicate
the case where APICv is disabled during KVM module load.
(e.g. insmod kvm_amd avic=0 or insmod kvm_intel enable_apicv=0).
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
[Do not use get_enable_apicv; consider irqchip_split in svm.c. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 9dbb990c319a..ed39f72faeaf 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2052,6 +2052,18 @@ free_avic: return err; } +static int svm_vm_init(struct kvm *kvm) +{ + if (avic) { + int ret = avic_vm_init(kvm); + if (ret) + return ret; + } + + kvm_apicv_init(kvm, avic && irqchip_split(kvm)); + return 0; +} + static inline int avic_update_iommu_vcpu_affinity(struct kvm_vcpu *vcpu, int cpu, bool r) { @@ -7274,7 +7286,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = { .vm_alloc = svm_vm_alloc, .vm_free = svm_vm_free, - .vm_init = avic_vm_init, + .vm_init = svm_vm_init, .vm_destroy = svm_vm_destroy, .prepare_guest_switch = svm_prepare_guest_switch, |