diff options
| author | Longpeng(Mike) <longpeng2@huawei.com> | 2022-02-22 22:11:16 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-15 11:26:20 +0100 |
| commit | def4c5570c44cc775c47e6d8503e4d12868f53aa (patch) | |
| tree | b880ea2ed1c6c7e15a9ccb020f083806ed65e63d /accel | |
| parent | 9568690868e2bcd8e35e449ac5013ca1d08968ac (diff) | |
| download | focaccia-qemu-def4c5570c44cc775c47e6d8503e4d12868f53aa.tar.gz focaccia-qemu-def4c5570c44cc775c47e6d8503e4d12868f53aa.zip | |
kvm/msi: do explicit commit when adding msi routes
We invoke the kvm_irqchip_commit_routes() for each addition to MSI route table, which is not efficient if we are adding lots of routes in some cases. This patch lets callers invoke the kvm_irqchip_commit_routes(), so the callers can decide how to optimize. [1] https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg00967.html Signed-off-by: Longpeng <longpeng2@huawei.com> Message-Id: <20220222141116.2091-3-longpeng2@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'accel')
| -rw-r--r-- | accel/kvm/kvm-all.c | 7 | ||||
| -rw-r--r-- | accel/stubs/kvm-stub.c | 2 |
2 files changed, 5 insertions, 4 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 0e66ebb497..27864dfaea 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -1961,10 +1961,11 @@ int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) return kvm_set_irq(s, route->kroute.gsi, 1); } -int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) +int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev) { struct kvm_irq_routing_entry kroute = {}; int virq; + KVMState *s = c->s; MSIMessage msg = {0, 0}; if (pci_available && dev) { @@ -2004,7 +2005,7 @@ int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) kvm_add_routing_entry(s, &kroute); kvm_arch_add_msi_route_post(&kroute, vector, dev); - kvm_irqchip_commit_routes(s); + c->changes++; return virq; } @@ -2162,7 +2163,7 @@ int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) abort(); } -int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) +int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev) { return -ENOSYS; } diff --git a/accel/stubs/kvm-stub.c b/accel/stubs/kvm-stub.c index 7e0fb884b9..3345882d85 100644 --- a/accel/stubs/kvm-stub.c +++ b/accel/stubs/kvm-stub.c @@ -77,7 +77,7 @@ int kvm_on_sigbus(int code, void *addr) return 1; } -int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) +int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev) { return -ENOSYS; } |