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[Qemu-devel] [PATCH v12 24/27] kvm-irqchip: do explicit commit when upda
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v12 24/27] kvm-irqchip: do explicit commit when update irq |
Date: |
Thu, 14 Jul 2016 13:56:33 +0800 |
In the past, we are doing gsi route commit for each irqchip route
update. This is not efficient if we are updating lots of routes in the
same time. This patch removes the committing phase in
kvm_irqchip_update_msi_route(). Instead, we do explicit commit after all
routes updated.
Signed-off-by: Peter Xu <address@hidden>
Reviewed-by: Paolo Bonzini <address@hidden>
---
hw/i386/kvm/pci-assign.c | 2 ++
hw/misc/ivshmem.c | 1 +
hw/vfio/pci.c | 1 +
hw/virtio/virtio-pci.c | 1 +
include/sysemu/kvm.h | 2 +-
kvm-all.c | 2 --
kvm-stub.c | 4 ++++
target-i386/kvm.c | 1 +
8 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c
index 82b752d..ec5dfe2 100644
--- a/hw/i386/kvm/pci-assign.c
+++ b/hw/i386/kvm/pci-assign.c
@@ -1014,6 +1014,7 @@ static void assigned_dev_update_msi_msg(PCIDevice
*pci_dev)
kvm_irqchip_update_msi_route(kvm_state, assigned_dev->msi_virq[0],
msi_get_message(pci_dev, 0), pci_dev);
+ kvm_irqchip_commit_routes(kvm_state);
}
static bool assigned_dev_msix_masked(MSIXTableEntry *entry)
@@ -1601,6 +1602,7 @@ static void assigned_dev_msix_mmio_write(void *opaque,
hwaddr addr,
if (ret) {
error_report("Error updating irq routing entry (%d)", ret);
}
+ kvm_irqchip_commit_routes(kvm_state);
}
}
}
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 8512523..241a70c 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -322,6 +322,7 @@ static int ivshmem_vector_unmask(PCIDevice *dev, unsigned
vector,
if (ret < 0) {
return ret;
}
+ kvm_irqchip_commit_routes(kvm_state);
return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, v->virq);
}
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 93455e5..b3b61bf 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -458,6 +458,7 @@ static void vfio_update_kvm_msi_virq(VFIOMSIVector *vector,
MSIMessage msg,
PCIDevice *pdev)
{
kvm_irqchip_update_msi_route(kvm_state, vector->virq, msg, pdev);
+ kvm_irqchip_commit_routes(kvm_state);
}
static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr,
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index cbdfd59..f0677b7 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -842,6 +842,7 @@ static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy
*proxy,
if (ret < 0) {
return ret;
}
+ kvm_irqchip_commit_routes(kvm_state);
}
}
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 0a16e0e..c9c2436 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -371,7 +371,6 @@ int kvm_set_irq(KVMState *s, int irq, int level);
int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin);
-void kvm_irqchip_commit_routes(KVMState *s);
void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
@@ -494,6 +493,7 @@ static inline void cpu_synchronize_post_init(CPUState *cpu)
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);
void kvm_irqchip_release_virq(KVMState *s, int virq);
int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter);
diff --git a/kvm-all.c b/kvm-all.c
index ca30a58..3764ba9 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1094,8 +1094,6 @@ static int kvm_update_routing_entry(KVMState *s,
*entry = *new_entry;
- kvm_irqchip_commit_routes(s);
-
return 0;
}
diff --git a/kvm-stub.c b/kvm-stub.c
index 982e590..64e23f6 100644
--- a/kvm-stub.c
+++ b/kvm-stub.c
@@ -135,6 +135,10 @@ int kvm_irqchip_update_msi_route(KVMState *s, int virq,
MSIMessage msg,
return -ENOSYS;
}
+void kvm_irqchip_commit_routes(KVMState *s)
+{
+}
+
int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter)
{
return -ENOSYS;
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index f02ba0a..0e26862 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -3379,6 +3379,7 @@ static void kvm_update_msi_routes_all(void *private, bool
global,
kvm_irqchip_update_msi_route(kvm_state, entry->virq,
msg, entry->dev);
}
+ kvm_irqchip_commit_routes(kvm_state);
trace_kvm_x86_update_msi_routes(cnt);
}
--
2.4.11
- [Qemu-devel] [PATCH v12 14/27] q35: ioapic: add support for emulated IOAPIC IR, (continued)
- [Qemu-devel] [PATCH v12 14/27] q35: ioapic: add support for emulated IOAPIC IR, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 15/27] ioapic: introduce ioapic_entry_parse() helper, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 16/27] intel_iommu: add support for split irqchip, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 17/27] x86-iommu: introduce IEC notifiers, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 18/27] ioapic: register IOMMU IEC notifier for ioapic, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 19/27] intel_iommu: Add support for Extended Interrupt Mode, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 20/27] intel_iommu: add SID validation for IR, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 21/27] kvm-irqchip: simplify kvm_irqchip_add_msi_route, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 22/27] kvm-irqchip: i386: add hook for add/remove virq, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 23/27] kvm-irqchip: x86: add msi route notify fn, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 24/27] kvm-irqchip: do explicit commit when update irq,
Peter Xu <=
- [Qemu-devel] [PATCH v12 25/27] intel_iommu: support all masks in interrupt entry cache invalidation, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 26/27] kvm-all: add trace events for kvm irqchip ops, Peter Xu, 2016/07/14
- [Qemu-devel] [PATCH v12 27/27] intel_iommu: disallow kernel-irqchip=on with IR, Peter Xu, 2016/07/14