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| author | Eric Auger <eric.auger@linaro.org> | 2015-09-18 22:29:43 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-01 15:06:45 +0200 |
| commit | 1a02b27035f82091d51ecafcb9ccaac1f31d4eb2 (patch) | |
| tree | 850ac92a5723e08aca31ea74d58dcd6d6cb33a86 /virt | |
| parent | 166c9775f1f8b8f00ad1db0fa5c8fc74059d965d (diff) | |
| download | lwn-1a02b27035f82091d51ecafcb9ccaac1f31d4eb2.tar.gz lwn-1a02b27035f82091d51ecafcb9ccaac1f31d4eb2.zip | |
KVM: introduce kvm_arch functions for IRQ bypass
This patch introduces
- kvm_arch_irq_bypass_add_producer
- kvm_arch_irq_bypass_del_producer
- kvm_arch_irq_bypass_stop
- kvm_arch_irq_bypass_start
They make possible to specialize the KVM IRQ bypass consumer in
case CONFIG_KVM_HAVE_IRQ_BYPASS is set.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
[Add weak implementations of the callbacks. - Feng]
Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/Kconfig | 3 | ||||
| -rw-r--r-- | virt/kvm/eventfd.c | 12 |
2 files changed, 15 insertions, 0 deletions
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index e2c876d5a03b..9f8014dda2cf 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -47,3 +47,6 @@ config KVM_GENERIC_DIRTYLOG_READ_PROTECT config KVM_COMPAT def_bool y depends on COMPAT && !S390 + +config HAVE_KVM_IRQ_BYPASS + bool diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index 413f5a6b61ba..c4f7abec4261 100644 --- a/virt/kvm/eventfd.c +++ b/virt/kvm/eventfd.c @@ -252,6 +252,18 @@ static void irqfd_update(struct kvm *kvm, struct kvm_kernel_irqfd *irqfd) write_seqcount_end(&irqfd->irq_entry_sc); } +#ifdef CONFIG_HAVE_KVM_IRQ_BYPASS +void __attribute__((weak)) kvm_arch_irq_bypass_stop( + struct irq_bypass_consumer *cons) +{ +} + +void __attribute__((weak)) kvm_arch_irq_bypass_start( + struct irq_bypass_consumer *cons) +{ +} +#endif + static int kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args) { |