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-rw-r--r--include/sysemu/kvm.h8
-rw-r--r--kvm-all.c4
-rw-r--r--kvm-stub.c1
3 files changed, 13 insertions, 0 deletions
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 4ac6176..b31f325 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -53,6 +53,7 @@ extern bool kvm_gsi_routing_allowed;
extern bool kvm_gsi_direct_mapping;
extern bool kvm_readonly_mem_allowed;
extern bool kvm_direct_msi_allowed;
+extern bool kvm_ioeventfd_any_length_allowed;
#if defined CONFIG_KVM || !defined NEED_CPU_H
#define kvm_enabled() (kvm_allowed)
@@ -153,6 +154,12 @@ extern bool kvm_direct_msi_allowed;
*/
#define kvm_direct_msi_enabled() (kvm_direct_msi_allowed)
+/**
+ * kvm_ioeventfd_any_length_enabled:
+ * Returns: true if KVM allows any length io eventfd.
+ */
+#define kvm_ioeventfd_any_length_enabled() (kvm_ioeventfd_any_length_allowed)
+
#else
#define kvm_enabled() (0)
#define kvm_irqchip_in_kernel() (false)
@@ -166,6 +173,7 @@ extern bool kvm_direct_msi_allowed;
#define kvm_gsi_direct_mapping() (false)
#define kvm_readonly_mem_enabled() (false)
#define kvm_direct_msi_enabled() (false)
+#define kvm_ioeventfd_any_length_enabled() (false)
#endif
struct kvm_run;
diff --git a/kvm-all.c b/kvm-all.c
index de3c8c4..c648b81 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -109,6 +109,7 @@ bool kvm_allowed;
bool kvm_readonly_mem_allowed;
bool kvm_vm_attributes_allowed;
bool kvm_direct_msi_allowed;
+bool kvm_ioeventfd_any_length_allowed;
static const KVMCapabilityInfo kvm_required_capabilites[] = {
KVM_CAP_INFO(USER_MEMORY),
@@ -1611,6 +1612,9 @@ static int kvm_init(MachineState *ms)
kvm_vm_attributes_allowed =
(kvm_check_extension(s, KVM_CAP_VM_ATTRIBUTES) > 0);
+ kvm_ioeventfd_any_length_allowed =
+ (kvm_check_extension(s, KVM_CAP_IOEVENTFD_ANY_LENGTH) > 0);
+
ret = kvm_arch_init(ms, s);
if (ret < 0) {
goto err;
diff --git a/kvm-stub.c b/kvm-stub.c
index a5051f7..dc97a5e 100644
--- a/kvm-stub.c
+++ b/kvm-stub.c
@@ -30,6 +30,7 @@ bool kvm_gsi_routing_allowed;
bool kvm_gsi_direct_mapping;
bool kvm_allowed;
bool kvm_readonly_mem_allowed;
+bool kvm_ioeventfd_any_length_allowed;
int kvm_init_vcpu(CPUState *cpu)
{