diff options
| 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 /target-arm | |
| parent | 32c18a2dbaf79c241eddabd19a3b410bab5bf0cc (diff) | |
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 'target-arm')
| -rw-r--r-- | target-arm/kvm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/target-arm/kvm.c b/target-arm/kvm.c index 84974bbd32..eca3a0037d 100644 --- a/target-arm/kvm.c +++ b/target-arm/kvm.c @@ -25,6 +25,7 @@ #include "internals.h" #include "hw/arm/arm.h" #include "exec/memattrs.h" +#include "hw/boards.h" const KVMCapabilityInfo kvm_arch_required_capabilities[] = { KVM_CAP_LAST_INFO @@ -578,8 +579,13 @@ void kvm_arch_init_irq_routing(KVMState *s) { } -int kvm_arch_irqchip_create(KVMState *s) +int kvm_arch_irqchip_create(MachineState *ms, KVMState *s) { + if (machine_kernel_irqchip_split(ms)) { + perror("-machine kernel_irqchip=split is not supported on ARM."); + exit(1); + } + /* If we can create the VGIC using the newer device control API, we * let the device do this when it initializes itself, otherwise we * fall back to the old API */ |