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[Qemu-devel] [PATCH V3 3/6] KVM: add support for any length io eventfd
From: |
Jason Wang |
Subject: |
[Qemu-devel] [PATCH V3 3/6] KVM: add support for any length io eventfd |
Date: |
Fri, 6 Nov 2015 16:02:46 +0800 |
Signed-off-by: Jason Wang <address@hidden>
---
include/sysemu/kvm.h | 8 ++++++++
kvm-all.c | 4 ++++
kvm-stub.c | 1 +
3 files changed, 13 insertions(+)
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 1bc1273..f4e2cf0 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),
@@ -1612,6 +1613,9 @@ 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)
{
--
2.1.4
- [Qemu-devel] [PATCH V3 0/6] virtio 1.0 pci optimizations and fixes, Jason Wang, 2015/11/06
- [Qemu-devel] [PATCH V3 1/6] virtio-pci: fix 1.0 virtqueue migration, Jason Wang, 2015/11/06
- [Qemu-devel] [PATCH V3 2/6] memory: don't try to adjust endianness for zero length eventfd, Jason Wang, 2015/11/06
- [Qemu-devel] [PATCH V3 3/6] KVM: add support for any length io eventfd,
Jason Wang <=
- [Qemu-devel] [PATCH V3 4/6] virtio-pci: use zero length mmio eventfd for 1.0 notification cap when possible, Jason Wang, 2015/11/06
- [Qemu-devel] [PATCH V3 5/6] virtio-pci: introduce pio notification capability for modern device, Jason Wang, 2015/11/06
- [Qemu-devel] [PATCH V3 6/6] virtio-pci: unbreak queue_enable read, Jason Wang, 2015/11/06