diff options
| author | Eddie Dong <eddie.dong@intel.com> | 2007-07-06 12:20:49 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:24 +0200 |
| commit | 85f455f7ddbed403b34b4d54b1eaf0e14126a126 (patch) | |
| tree | 1dba7aa8fee3c8f756e12049c496dee5baae752c /drivers/kvm/kvm_main.c | |
| parent | 152d3f2f246ce3c2a0cf2fc6c2214663cd99aa83 (diff) | |
| download | lwn-85f455f7ddbed403b34b4d54b1eaf0e14126a126.tar.gz lwn-85f455f7ddbed403b34b4d54b1eaf0e14126a126.zip | |
KVM: Add support for in-kernel PIC emulation
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/kvm_main.c')
| -rw-r--r-- | drivers/kvm/kvm_main.c | 46 |
1 files changed, 40 insertions, 6 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index d154487b7729..09a04bc9541d 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -18,6 +18,7 @@ #include "kvm.h" #include "x86_emulate.h" #include "segment_descriptor.h" +#include "irq.h" #include <linux/kvm.h> #include <linux/module.h> @@ -378,6 +379,7 @@ static void kvm_destroy_vm(struct kvm *kvm) spin_unlock(&kvm_lock); kvm_io_bus_destroy(&kvm->pio_bus); kvm_io_bus_destroy(&kvm->mmio_bus); + kfree(kvm->vpic); kvm_free_vcpus(kvm); kvm_free_physmem(kvm); kfree(kvm); @@ -1258,7 +1260,8 @@ EXPORT_SYMBOL_GPL(emulate_instruction); int kvm_emulate_halt(struct kvm_vcpu *vcpu) { - if (vcpu->irq_summary) + if (vcpu->irq_summary || + (irqchip_in_kernel(vcpu->kvm) && kvm_cpu_has_interrupt(vcpu))) return 1; vcpu->run->exit_reason = KVM_EXIT_HLT; @@ -2715,6 +2718,30 @@ static long kvm_vm_ioctl(struct file *filp, goto out; break; } + case KVM_CREATE_IRQCHIP: + r = -ENOMEM; + kvm->vpic = kvm_create_pic(kvm); + if (kvm->vpic) + r = 0; + else + goto out; + break; + case KVM_IRQ_LINE: { + struct kvm_irq_level irq_event; + + r = -EFAULT; + if (copy_from_user(&irq_event, argp, sizeof irq_event)) + goto out; + if (irqchip_in_kernel(kvm)) { + if (irq_event.irq < 16) + kvm_pic_set_irq(pic_irqchip(kvm), + irq_event.irq, + irq_event.level); + /* TODO: IOAPIC */ + r = 0; + } + break; + } default: ; } @@ -2825,12 +2852,19 @@ static long kvm_dev_ioctl(struct file *filp, r = 0; break; } - case KVM_CHECK_EXTENSION: - /* - * No extensions defined at present. - */ - r = 0; + case KVM_CHECK_EXTENSION: { + int ext = (long)argp; + + switch (ext) { + case KVM_CAP_IRQCHIP: + r = 1; + break; + default: + r = 0; + break; + } break; + } case KVM_GET_VCPU_MMAP_SIZE: r = -EINVAL; if (arg) |