def4c5570c
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>
151 lines
2.6 KiB
C
151 lines
2.6 KiB
C
/*
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* QEMU KVM stub
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*
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* Copyright Red Hat, Inc. 2010
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*
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* Author: Paolo Bonzini <pbonzini@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "sysemu/kvm.h"
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#include "hw/pci/msi.h"
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KVMState *kvm_state;
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bool kvm_kernel_irqchip;
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bool kvm_async_interrupts_allowed;
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bool kvm_eventfds_allowed;
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bool kvm_irqfds_allowed;
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bool kvm_resamplefds_allowed;
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bool kvm_msi_via_irqfd_allowed;
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bool kvm_gsi_routing_allowed;
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bool kvm_gsi_direct_mapping;
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bool kvm_allowed;
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bool kvm_readonly_mem_allowed;
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bool kvm_ioeventfd_any_length_allowed;
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bool kvm_msi_use_devid;
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void kvm_flush_coalesced_mmio_buffer(void)
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{
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}
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void kvm_cpu_synchronize_state(CPUState *cpu)
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{
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}
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bool kvm_has_sync_mmu(void)
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{
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return false;
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}
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int kvm_has_many_ioeventfds(void)
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{
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return 0;
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}
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int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap)
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{
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return -ENOSYS;
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}
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int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
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target_ulong len, int type)
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{
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return -EINVAL;
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}
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int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
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target_ulong len, int type)
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{
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return -EINVAL;
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}
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void kvm_remove_all_breakpoints(CPUState *cpu)
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{
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}
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int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
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{
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return 1;
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}
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int kvm_on_sigbus(int code, void *addr)
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{
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return 1;
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}
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int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev)
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{
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return -ENOSYS;
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}
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void kvm_init_irq_routing(KVMState *s)
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{
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}
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void kvm_irqchip_release_virq(KVMState *s, int virq)
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{
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}
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int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
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PCIDevice *dev)
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{
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return -ENOSYS;
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}
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void kvm_irqchip_commit_routes(KVMState *s)
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{
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}
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void kvm_irqchip_add_change_notifier(Notifier *n)
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{
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}
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void kvm_irqchip_remove_change_notifier(Notifier *n)
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{
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}
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void kvm_irqchip_change_notify(void)
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{
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}
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int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter)
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{
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return -ENOSYS;
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}
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int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
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EventNotifier *rn, int virq)
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{
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return -ENOSYS;
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}
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int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
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int virq)
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{
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return -ENOSYS;
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}
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bool kvm_has_free_slot(MachineState *ms)
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{
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return false;
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}
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void kvm_init_cpu_signals(CPUState *cpu)
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{
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abort();
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}
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bool kvm_arm_supports_user_irq(void)
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{
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return false;
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}
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bool kvm_dirty_ring_enabled(void)
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{
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return false;
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}
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