5d721b785f
When running with KVM enabled, you can choose between emulating the gic in kernel or user space. If the kernel supports in-kernel virtualization of the interrupt controller, it will default to that. If not, if will default to user space emulation. Unfortunately when running in user mode gic emulation, we miss out on interrupt events which are only available from kernel space, such as the timer. This patch leverages the new kernel/user space pending line synchronization for timer events. It does not handle PMU events yet. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Andrew Jones <drjones@redhat.com> Message-id: 1498577737-130264-1-git-send-email-agraf@suse.de Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
164 lines
2.8 KiB
C
164 lines
2.8 KiB
C
/*
|
|
* QEMU KVM stub
|
|
*
|
|
* Copyright Red Hat, Inc. 2010
|
|
*
|
|
* Author: Paolo Bonzini <pbonzini@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "cpu.h"
|
|
#include "sysemu/kvm.h"
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
#include "hw/pci/msi.h"
|
|
#endif
|
|
|
|
KVMState *kvm_state;
|
|
bool kvm_kernel_irqchip;
|
|
bool kvm_async_interrupts_allowed;
|
|
bool kvm_eventfds_allowed;
|
|
bool kvm_irqfds_allowed;
|
|
bool kvm_resamplefds_allowed;
|
|
bool kvm_msi_via_irqfd_allowed;
|
|
bool kvm_gsi_routing_allowed;
|
|
bool kvm_gsi_direct_mapping;
|
|
bool kvm_allowed;
|
|
bool kvm_readonly_mem_allowed;
|
|
bool kvm_ioeventfd_any_length_allowed;
|
|
bool kvm_msi_use_devid;
|
|
|
|
int kvm_destroy_vcpu(CPUState *cpu)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
int kvm_init_vcpu(CPUState *cpu)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
void kvm_flush_coalesced_mmio_buffer(void)
|
|
{
|
|
}
|
|
|
|
void kvm_cpu_synchronize_state(CPUState *cpu)
|
|
{
|
|
}
|
|
|
|
void kvm_cpu_synchronize_post_reset(CPUState *cpu)
|
|
{
|
|
}
|
|
|
|
void kvm_cpu_synchronize_post_init(CPUState *cpu)
|
|
{
|
|
}
|
|
|
|
int kvm_cpu_exec(CPUState *cpu)
|
|
{
|
|
abort();
|
|
}
|
|
|
|
int kvm_has_sync_mmu(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int kvm_has_many_ioeventfds(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
|
|
target_ulong len, int type)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
|
|
target_ulong len, int type)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
void kvm_remove_all_breakpoints(CPUState *cpu)
|
|
{
|
|
}
|
|
|
|
int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int kvm_on_sigbus(int code, void *addr)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
void kvm_init_irq_routing(KVMState *s)
|
|
{
|
|
}
|
|
|
|
void kvm_irqchip_release_virq(KVMState *s, int virq)
|
|
{
|
|
}
|
|
|
|
int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
|
|
PCIDevice *dev)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
void kvm_irqchip_commit_routes(KVMState *s)
|
|
{
|
|
}
|
|
|
|
int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
|
|
EventNotifier *rn, int virq)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
|
|
int virq)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
bool kvm_has_free_slot(MachineState *ms)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
void kvm_init_cpu_signals(CPUState *cpu)
|
|
{
|
|
abort();
|
|
}
|
|
|
|
bool kvm_arm_supports_user_irq(void)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|