diff options
| author | Steve Rutherford <srutherford@google.com> | 2015-07-29 23:21:40 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-01 15:06:26 +0200 |
| commit | 49df6397edfc5a8ba8ca813b51fb9729d8e94b40 (patch) | |
| tree | b5cb29a28fff01c9c85c4f02961164532fa241b2 /arch/x86/kvm/irq.h | |
| parent | 4ca7dd8ce4b24e18f94eed90e80c6eb80fb48c9a (diff) | |
| download | linux-next-49df6397edfc5a8ba8ca813b51fb9729d8e94b40.tar.gz | |
KVM: x86: Split the APIC from the rest of IRQCHIP.
First patch in a series which enables the relocation of the
PIC/IOAPIC to userspace.
Adds capability KVM_CAP_SPLIT_IRQCHIP;
KVM_CAP_SPLIT_IRQCHIP enables the construction of LAPICs without the
rest of the irqchip.
Compile tested for x86.
Signed-off-by: Steve Rutherford <srutherford@google.com>
Suggested-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/irq.h')
| -rw-r--r-- | arch/x86/kvm/irq.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h index 9e6e7e04de98..2f9703dcd913 100644 --- a/arch/x86/kvm/irq.h +++ b/arch/x86/kvm/irq.h @@ -83,13 +83,22 @@ static inline struct kvm_pic *pic_irqchip(struct kvm *kvm) return kvm->arch.vpic; } +static inline int irqchip_split(struct kvm *kvm) +{ + return kvm->arch.irqchip_split; +} + static inline int irqchip_in_kernel(struct kvm *kvm) { struct kvm_pic *vpic = pic_irqchip(kvm); + bool ret; + + ret = (vpic != NULL); + ret |= irqchip_split(kvm); /* Read vpic before kvm->irq_routing. */ smp_rmb(); - return vpic != NULL; + return ret; } static inline int lapic_in_kernel(struct kvm_vcpu *vcpu) |