diff options
| author | Avi Kivity <avi@redhat.com> | 2008-11-19 13:58:46 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-03-24 11:03:06 +0200 |
| commit | 399ec807ddc38ecccf8c06dbde04531cbdc63e11 (patch) | |
| tree | 75a4e3ee9cfffb4ecf7b4608bb592c89f2b62219 /arch/ia64 | |
| parent | 193554750441d91e127dd5066b8aebe0f769101c (diff) | |
| download | linux-399ec807ddc38ecccf8c06dbde04531cbdc63e11.tar.gz | |
KVM: Userspace controlled irq routing
Currently KVM has a static routing from GSI numbers to interrupts (namely, 0-15 are mapped 1:1 to both PIC and IOAPIC, and 16:23 are mapped 1:1 to the IOAPIC). This is insufficient for several reasons: - HPET requires non 1:1 mapping for the timer interrupt - MSIs need a new method to assign interrupt numbers and dispatch them - ACPI APIC mode needs to be able to reassign the PCI LINK interrupts to the ioapics This patch implements an interrupt routing table (as a linked list, but this can be easily changed) and a userspace interface to replace the table. The routing table is initialized according to the current hardwired mapping. Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kvm/kvm-ia64.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index 1477f91617a5..dbf527a57341 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -919,6 +919,11 @@ long kvm_arch_vm_ioctl(struct file *filp, r = kvm_ioapic_init(kvm); if (r) goto out; + r = kvm_setup_default_irq_routing(kvm); + if (r) { + kfree(kvm->arch.vioapic); + goto out; + } break; case KVM_IRQ_LINE: { struct kvm_irq_level irq_event; |