Commit 35108223 authored by Jason Wang's avatar Jason Wang Committed by Michael S. Tsirkin
Browse files

KVM: add support for any length io eventfd 



Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b8aecea2

include/sysemu/kvm.h

+8 −0
Original line number Diff line number Diff line
@@ -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;

kvm-all.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

kvm-stub.c

+1 −0
Original line number Diff line number Diff line
@@ -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)

{