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[PATCH v3 6/9] kvm: irqchip: extract kvm_irqchip_add_deferred_msi_route
From: |
Longpeng(Mike) |
Subject: |
[PATCH v3 6/9] kvm: irqchip: extract kvm_irqchip_add_deferred_msi_route |
Date: |
Tue, 21 Sep 2021 07:01:59 +0800 |
Extract a common helper that add MSI route for specific vector
but does not commit immediately.
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
---
accel/kvm/kvm-all.c | 15 +++++++++++++--
include/sysemu/kvm.h | 6 ++++++
2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index e5b10dd129..d603afc44c 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -1950,7 +1950,7 @@ 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_deferred_msi_route(KVMState *s, int vector, PCIDevice *dev)
{
struct kvm_irq_routing_entry kroute = {};
int virq;
@@ -1993,7 +1993,18 @@ 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);
+
+ return virq;
+}
+
+int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
+{
+ int virq;
+
+ virq = kvm_irqchip_add_deferred_msi_route(s, vector, dev);
+ if (virq >= 0) {
+ kvm_irqchip_commit_routes(s);
+ }
return virq;
}
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index a1ab1ee12d..8de0d9a715 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -476,6 +476,12 @@ void kvm_init_cpu_signals(CPUState *cpu);
* @return: virq (>=0) when success, errno (<0) when failed.
*/
int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev);
+/**
+ * Add MSI route for specific vector but does not commit to KVM
+ * immediately
+ */
+int kvm_irqchip_add_deferred_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);
--
2.23.0
- [PATCH v3 0/9] optimize the downtime for vfio migration, Longpeng(Mike), 2021/09/20
- [PATCH v3 5/9] msix: reset poll_notifier to NULL if fail to set notifiers, Longpeng(Mike), 2021/09/20
- [PATCH v3 3/9] vfio: simplify the failure path in vfio_msi_enable, Longpeng(Mike), 2021/09/20
- [PATCH v3 1/9] vfio: simplify the conditional statements in vfio_msi_enable, Longpeng(Mike), 2021/09/20
- [PATCH v3 6/9] kvm: irqchip: extract kvm_irqchip_add_deferred_msi_route,
Longpeng(Mike) <=
- [PATCH v3 4/9] msix: simplify the conditional in msix_set/unset_vector_notifiers, Longpeng(Mike), 2021/09/20
- [PATCH v3 8/9] Revert "vfio: Avoid disabling and enabling vectors repeatedly in VFIO migration", Longpeng(Mike), 2021/09/20
- [PATCH v3 9/9] vfio: defer to commit kvm irq routing when enable msi/msix, Longpeng(Mike), 2021/09/20
- [PATCH v3 7/9] vfio: add infrastructure to commit the deferred kvm routing, Longpeng(Mike), 2021/09/20
- [PATCH v3 2/9] vfio: move re-enabling INTX out of the common helper, Longpeng(Mike), 2021/09/20