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| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-01-25 10:18:51 +0800 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-01-29 10:48:19 +0200 |
| commit | c7c9c56ca26f7b9458711b2d78b60b60e0d38ba7 (patch) | |
| tree | feab61b2f3a5587dd502a9d2bf4b27a8b2ebe507 /arch/ia64/kvm | |
| parent | 8d14695f9542e9e0195d6e41ddaa52c32322adf5 (diff) | |
| download | talos-op-linux-c7c9c56ca26f7b9458711b2d78b60b60e0d38ba7.tar.gz talos-op-linux-c7c9c56ca26f7b9458711b2d78b60b60e0d38ba7.zip | |
x86, apicv: add virtual interrupt delivery support
Virtual interrupt delivery avoids KVM to inject vAPIC interrupts
manually, which is fully taken care of by the hardware. This needs
some special awareness into existing interrupr injection path:
- for pending interrupt, instead of direct injection, we may need
update architecture specific indicators before resuming to guest.
- A pending interrupt, which is masked by ISR, should be also
considered in above update action, since hardware will decide
when to inject it at right time. Current has_interrupt and
get_interrupt only returns a valid vector from injection p.o.v.
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch/ia64/kvm')
| -rw-r--r-- | arch/ia64/kvm/lapic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h index c5f92a926a9a..c3e2935b6db4 100644 --- a/arch/ia64/kvm/lapic.h +++ b/arch/ia64/kvm/lapic.h @@ -27,4 +27,10 @@ int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq); #define kvm_apic_present(x) (true) #define kvm_lapic_enabled(x) (true) +static inline bool kvm_apic_vid_enabled(void) +{ + /* IA64 has no apicv supporting, do nothing here */ + return false; +} + #endif |
