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| author | Longpeng(Mike) <longpeng2@huawei.com> | 2022-02-22 22:11:15 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-15 11:26:20 +0100 |
| commit | 9568690868e2bcd8e35e449ac5013ca1d08968ac (patch) | |
| tree | 4cf77bb880077e2c52cf1bee2e1cef24762770dd /include | |
| parent | a6a7ebc81756455f592db89cbb6b0a56f9567554 (diff) | |
| download | qemu-9568690868e2bcd8e35e449ac5013ca1d08968ac.zip qemu-9568690868e2bcd8e35e449ac5013ca1d08968ac.tar.gz qemu-9568690868e2bcd8e35e449ac5013ca1d08968ac.tar.bz2 | |
kvm-irqchip: introduce new API to support route change
Paolo suggested adding the new API to support route changes [1]. We should invoke
kvm_irqchip_begin_route_changes() before changing the routes, increasing the
KVMRouteChange.changes if the routes are changed, and commit the changes at last.
[1] https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg02898.html
Signed-off-by: Longpeng <longpeng2@huawei.com>
Message-Id: <20220222141116.2091-2-longpeng2@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sysemu/kvm.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index a5bec96..62772b5 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -224,6 +224,11 @@ DECLARE_INSTANCE_CHECKER(KVMState, KVM_STATE, extern KVMState *kvm_state; typedef struct Notifier Notifier; +typedef struct KVMRouteChange { + KVMState *s; + int changes; +} KVMRouteChange; + /* external API */ bool kvm_has_free_slot(MachineState *ms); @@ -494,6 +499,20 @@ int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev); int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, PCIDevice *dev); void kvm_irqchip_commit_routes(KVMState *s); + +static inline KVMRouteChange kvm_irqchip_begin_route_changes(KVMState *s) +{ + return (KVMRouteChange) { .s = s, .changes = 0 }; +} + +static inline void kvm_irqchip_commit_route_changes(KVMRouteChange *c) +{ + if (c->changes) { + kvm_irqchip_commit_routes(c->s); + c->changes = 0; + } +} + void kvm_irqchip_release_virq(KVMState *s, int virq); int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter); |