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KVM: add support for any length io eventfd 

Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jason Wang 2015-11-06 16:02:46 +08:00 committed by Michael S. Tsirkin
parent b8aecea23a
commit 351082238d
3 changed files with 13 additions and 0 deletions
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8
include/sysemu/kvm.h
View File

@ -53,6 +53,7 @@ extern bool kvm_gsi_routing_allowed;
extern bool kvm_gsi_direct_mapping; extern bool kvm_gsi_direct_mapping;
extern bool kvm_readonly_mem_allowed; extern bool kvm_readonly_mem_allowed;
extern bool kvm_direct_msi_allowed; extern bool kvm_direct_msi_allowed;
extern bool kvm_ioeventfd_any_length_allowed;
#if defined CONFIG_KVM || !defined NEED_CPU_H #if defined CONFIG_KVM || !defined NEED_CPU_H
#define kvm_enabled() (kvm_allowed) #define kvm_enabled() (kvm_allowed)
@ -153,6 +154,12 @@ extern bool kvm_direct_msi_allowed;
*/ */
#define kvm_direct_msi_enabled() (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 #else
#define kvm_enabled() (0) #define kvm_enabled() (0)
#define kvm_irqchip_in_kernel() (false) #define kvm_irqchip_in_kernel() (false)
@ -166,6 +173,7 @@ extern bool kvm_direct_msi_allowed;
#define kvm_gsi_direct_mapping() (false) #define kvm_gsi_direct_mapping() (false)
#define kvm_readonly_mem_enabled() (false) #define kvm_readonly_mem_enabled() (false)
#define kvm_direct_msi_enabled() (false) #define kvm_direct_msi_enabled() (false)
#define kvm_ioeventfd_any_length_enabled() (false)
#endif #endif
struct kvm_run; struct kvm_run;

4
kvm-all.c
View File

@ -109,6 +109,7 @@ bool kvm_allowed;
bool kvm_readonly_mem_allowed; bool kvm_readonly_mem_allowed;
bool kvm_vm_attributes_allowed; bool kvm_vm_attributes_allowed;
bool kvm_direct_msi_allowed; bool kvm_direct_msi_allowed;
bool kvm_ioeventfd_any_length_allowed;
static const KVMCapabilityInfo kvm_required_capabilites[] = { static const KVMCapabilityInfo kvm_required_capabilites[] = {
KVM_CAP_INFO(USER_MEMORY), KVM_CAP_INFO(USER_MEMORY),
@ -1611,6 +1612,9 @@ static int kvm_init(MachineState *ms)
kvm_vm_attributes_allowed = kvm_vm_attributes_allowed =
(kvm_check_extension(s, KVM_CAP_VM_ATTRIBUTES) > 0); (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); ret = kvm_arch_init(ms, s);
if (ret < 0) { if (ret < 0) {
goto err; goto err;

1
kvm-stub.c
View File

@ -30,6 +30,7 @@ bool kvm_gsi_routing_allowed;
bool kvm_gsi_direct_mapping; bool kvm_gsi_direct_mapping;
bool kvm_allowed; bool kvm_allowed;
bool kvm_readonly_mem_allowed; bool kvm_readonly_mem_allowed;
bool kvm_ioeventfd_any_length_allowed;
int kvm_init_vcpu(CPUState *cpu) int kvm_init_vcpu(CPUState *cpu)
{ {