diff options
author | Sean Christopherson <seanjc@google.com> | 2023-01-06 04:13:04 +0300 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-01-13 18:45:34 +0300 |
commit | b3f257a846960d06bdaa893dbee100189fbf2234 (patch) | |
tree | a3ccb38824105ff52f13a95b00d0c859ec7e3a9b /arch/x86/include/asm/kvm_host.h | |
parent | e2ed3e64a2bd2493469bec0ad205b594a98341a6 (diff) | |
download | linux-b3f257a846960d06bdaa893dbee100189fbf2234.tar.xz |
KVM: x86: Track required APICv inhibits with variable, not callback
Track the per-vendor required APICv inhibits with a variable instead of
calling into vendor code every time KVM wants to query the set of
required inhibits. The required inhibits are a property of the vendor's
virtualization architecture, i.e. are 100% static.
Using a variable allows the compiler to inline the check, e.g. generate
a single-uop TEST+Jcc, and thus eliminates any desire to avoid checking
inhibits for performance reasons.
No functional change intended.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20230106011306.85230-32-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
-rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index b41a01b3a4af..7ca854714ccd 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1623,6 +1623,7 @@ struct kvm_x86_ops { void (*enable_irq_window)(struct kvm_vcpu *vcpu); void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr); bool (*check_apicv_inhibit_reasons)(enum kvm_apicv_inhibit reason); + const unsigned long required_apicv_inhibits; bool allow_apicv_in_x2apic_without_x2apic_virtualization; void (*refresh_apicv_exec_ctrl)(struct kvm_vcpu *vcpu); void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr); |