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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-12-17 17:16:08 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-12-17 17:33:47 +0100 |
| commit | 15eafc2e602ff8c37c6e132eb8c63fec8fc17175 (patch) | |
| tree | e37c79eac125c083389e8bde03b8d3e048c22b0a /include/sysemu/kvm.h | |
| parent | 32c18a2dbaf79c241eddabd19a3b410bab5bf0cc (diff) | |
| download | qemu-15eafc2e602ff8c37c6e132eb8c63fec8fc17175.zip qemu-15eafc2e602ff8c37c6e132eb8c63fec8fc17175.tar.gz qemu-15eafc2e602ff8c37c6e132eb8c63fec8fc17175.tar.bz2 | |
kvm: x86: add support for KVM_CAP_SPLIT_IRQCHIP
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>
Diffstat (limited to 'include/sysemu/kvm.h')
| -rw-r--r-- | include/sysemu/kvm.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index c8f43dc..7741f91 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -174,6 +174,7 @@ extern bool kvm_ioeventfd_any_length_allowed; #else #define kvm_enabled() (0) #define kvm_irqchip_in_kernel() (false) +#define kvm_irqchip_is_split() (false) #define kvm_async_interrupts_enabled() (false) #define kvm_halt_in_kernel() (false) #define kvm_eventfds_enabled() (false) @@ -317,6 +318,8 @@ MemTxAttrs kvm_arch_post_run(CPUState *cpu, struct kvm_run *run); int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run); +int kvm_arch_handle_ioapic_eoi(CPUState *cpu, struct kvm_run *run); + int kvm_arch_process_async_events(CPUState *cpu); int kvm_arch_get_registers(CPUState *cpu); @@ -484,6 +487,7 @@ void kvm_init_irq_routing(KVMState *s); /** * kvm_arch_irqchip_create: * @KVMState: The KVMState pointer + * @MachineState: The MachineState pointer * * Allow architectures to create an in-kernel irq chip themselves. * @@ -491,7 +495,7 @@ void kvm_init_irq_routing(KVMState *s); * 0: irq chip was not created * > 0: irq chip was created */ -int kvm_arch_irqchip_create(KVMState *s); +int kvm_arch_irqchip_create(MachineState *ms, KVMState *s); /** * kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl |