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authorSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>2019-11-14 14:15:05 -0600
committerPaolo Bonzini <pbonzini@redhat.com>2020-02-05 15:17:40 +0100
commit4e19c36f2df8f84da22c7287de86729aaf3e352b (patch)
tree0fa24010542c92fda3f605ac5cc8e5147d6ba28a /arch/x86/include
parentb26a695a1d78cc415fe26d74d0463f5d887980de (diff)
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/include')
-rw-r--r--arch/x86/include/asm/kvm_host.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 329d01c689b7..4d57e4b74aae 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -873,6 +873,8 @@ enum kvm_irqchip_mode {
KVM_IRQCHIP_SPLIT, /* created with KVM_CAP_SPLIT_IRQCHIP */
};
+#define APICV_INHIBIT_REASON_DISABLE 0
+
struct kvm_arch {
unsigned long n_used_mmu_pages;
unsigned long n_requested_mmu_pages;
@@ -904,6 +906,7 @@ struct kvm_arch {
struct kvm_apic_map *apic_map;
bool apic_access_page_done;
+ unsigned long apicv_inhibit_reasons;
gpa_t wall_clock;
@@ -1478,6 +1481,8 @@ gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
struct x86_exception *exception);
void kvm_vcpu_deactivate_apicv(struct kvm_vcpu *vcpu);
+bool kvm_apicv_activated(struct kvm *kvm);
+void kvm_apicv_init(struct kvm *kvm, bool enable);
int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);

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