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15b2bd1847
All transports can use the same event handler for the irqfd, though the exact mechanics of the assignment will be specific. Note that there are three states: handled by the kernel, handled in userspace, disabled. This also lets virtio use event_notifier_set_handler. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
164 lines
2.6 KiB
C
164 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-common.h"
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#include "hw/hw.h"
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#include "hw/msi.h"
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#include "cpu.h"
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#include "gdbstub.h"
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#include "kvm.h"
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KVMState *kvm_state;
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bool kvm_kernel_irqchip;
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int kvm_init_vcpu(CPUArchState *env)
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{
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return -ENOSYS;
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}
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int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
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{
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return -ENOSYS;
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}
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int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size)
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{
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return -ENOSYS;
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}
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int kvm_init(void)
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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(CPUArchState *env)
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{
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}
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void kvm_cpu_synchronize_post_reset(CPUArchState *env)
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{
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}
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void kvm_cpu_synchronize_post_init(CPUArchState *env)
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{
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}
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int kvm_cpu_exec(CPUArchState *env)
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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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int kvm_allows_irq0_override(void)
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{
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return 1;
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}
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int kvm_has_pit_state2(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(CPUArchState *env, 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(CPUArchState *current_env, 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(CPUArchState *current_env, 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(CPUArchState *current_env)
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{
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}
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#ifndef _WIN32
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int kvm_set_signal_mask(CPUArchState *env, 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_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign)
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{
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return -ENOSYS;
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}
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int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign, uint32_t len)
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{
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return -ENOSYS;
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}
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int kvm_on_sigbus_vcpu(CPUArchState *env, 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(KVMState *s, MSIMessage msg)
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{
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return -ENOSYS;
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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_add_irqfd(KVMState *s, int fd, int virq)
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{
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return -ENOSYS;
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}
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int kvm_irqchip_add_irq_notifier(KVMState *s, EventNotifier *n, 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(KVMState *s, int fd, int virq)
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{
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return -ENOSYS;
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}
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int kvm_irqchip_remove_irq_notifier(KVMState *s, EventNotifier *n, int virq)
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{
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return -ENOSYS;
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}
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