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15eafc2e60
This patch adds support for split IRQ chip mode. When
KVM_CAP_SPLIT_IRQCHIP is enabled:
1.) The PIC, PIT, and IOAPIC are implemented in userspace while
the LAPIC is implemented by KVM.
2.) The software IOAPIC delivers interrupts to the KVM LAPIC via
kvm_set_irq. Interrupt delivery is configured via the MSI routing
table, for which routes are reserved in target-i386/kvm.c then
configured in hw/intc/ioapic.c
3.) KVM delivers IOAPIC EOIs via a new exit KVM_EXIT_IOAPIC_EOI,
which is handled in target-i386/kvm.c and relayed to the software
IOAPIC via ioapic_eoi_broadcast.
Signed-off-by: Matt Gingell <gingell@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/*
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* QEMU KVM support -- x86 specific functions.
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*
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* Copyright (c) 2012 Linaro Limited
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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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#ifndef QEMU_KVM_I386_H
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#define QEMU_KVM_I386_H
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#include "sysemu/kvm.h"
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#define kvm_apic_in_kernel() (kvm_irqchip_in_kernel())
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bool kvm_allows_irq0_override(void);
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bool kvm_has_smm(void);
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void kvm_synchronize_all_tsc(void);
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void kvm_arch_reset_vcpu(X86CPU *cs);
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void kvm_arch_do_init_vcpu(X86CPU *cs);
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int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr,
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uint32_t flags, uint32_t *dev_id);
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int kvm_device_pci_deassign(KVMState *s, uint32_t dev_id);
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int kvm_device_intx_assign(KVMState *s, uint32_t dev_id,
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bool use_host_msi, uint32_t guest_irq);
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int kvm_device_intx_set_mask(KVMState *s, uint32_t dev_id, bool masked);
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int kvm_device_intx_deassign(KVMState *s, uint32_t dev_id, bool use_host_msi);
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int kvm_device_msi_assign(KVMState *s, uint32_t dev_id, int virq);
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int kvm_device_msi_deassign(KVMState *s, uint32_t dev_id);
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bool kvm_device_msix_supported(KVMState *s);
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int kvm_device_msix_init_vectors(KVMState *s, uint32_t dev_id,
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uint32_t nr_vectors);
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int kvm_device_msix_set_vector(KVMState *s, uint32_t dev_id, uint32_t vector,
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int virq);
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int kvm_device_msix_assign(KVMState *s, uint32_t dev_id);
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int kvm_device_msix_deassign(KVMState *s, uint32_t dev_id);
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#endif
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