3f1fea0fb5
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 <peterx@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
164 lines
2.8 KiB
C
164 lines
2.8 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 "qemu-common.h"
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#include "cpu.h"
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#include "sysemu/kvm.h"
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#ifndef CONFIG_USER_ONLY
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#include "hw/pci/msi.h"
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#endif
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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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int kvm_destroy_vcpu(CPUState *cpu)
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{
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return -ENOSYS;
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}
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int kvm_init_vcpu(CPUState *cpu)
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{
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return -ENOSYS;
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}
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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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void kvm_cpu_synchronize_post_reset(CPUState *cpu)
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{
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}
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void kvm_cpu_synchronize_post_init(CPUState *cpu)
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{
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}
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int kvm_cpu_exec(CPUState *cpu)
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{
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abort();
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}
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int kvm_has_sync_mmu(void)
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{
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return 0;
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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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void kvm_setup_guest_memory(void *start, size_t size)
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{
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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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#ifndef _WIN32
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int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset)
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{
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abort();
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}
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#endif
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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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#ifndef CONFIG_USER_ONLY
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int kvm_irqchip_add_msi_route(KVMState *s, 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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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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#endif
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