From 9568690868e2bcd8e35e449ac5013ca1d08968ac Mon Sep 17 00:00:00 2001 From: "Longpeng(Mike)" Date: Tue, 22 Feb 2022 22:11:15 +0800 Subject: 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 Message-Id: <20220222141116.2091-2-longpeng2@huawei.com> Signed-off-by: Paolo Bonzini --- include/sysemu/kvm.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/sysemu') 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); -- cgit v1.1