diff options
| author | He, Qing <qing.he@intel.com> | 2007-08-05 10:49:16 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:25 +0200 |
| commit | 6bf9e962d14deb9e460afbbfd83ea2f450325c2d (patch) | |
| tree | 050b2be2fcded255afbb2512ed9c07adbd3f5b0f /include/linux/kvm.h | |
| parent | c52fb35a8b5dada749d35fbe15ac1f9857b22896 (diff) | |
| download | lwn-6bf9e962d14deb9e460afbbfd83ea2f450325c2d.tar.gz lwn-6bf9e962d14deb9e460afbbfd83ea2f450325c2d.zip | |
KVM: in-kernel IOAPIC save and restore support
This patch adds support for in-kernel ioapic save and restore (to
and from userspace). It uses the same get/set_irqchip ioctl as
in-kernel PIC.
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include/linux/kvm.h')
| -rw-r--r-- | include/linux/kvm.h | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 6560f11870fd..42d15150d7a3 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -45,7 +45,7 @@ struct kvm_irq_level { __u32 level; }; -/* for KVM_GET_IRQCHIP / KVM_SET_IRQCHIP */ +/* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */ struct kvm_pic_state { __u8 last_irr; /* edge detection */ __u8 irr; /* interrupt request register */ @@ -65,9 +65,35 @@ struct kvm_pic_state { __u8 elcr_mask; }; +#define KVM_IOAPIC_NUM_PINS 24 +struct kvm_ioapic_state { + __u64 base_address; + __u32 ioregsel; + __u32 id; + __u32 irr; + __u32 pad; + union { + __u64 bits; + struct { + __u8 vector; + __u8 delivery_mode:3; + __u8 dest_mode:1; + __u8 delivery_status:1; + __u8 polarity:1; + __u8 remote_irr:1; + __u8 trig_mode:1; + __u8 mask:1; + __u8 reserve:7; + __u8 reserved[4]; + __u8 dest_id; + } fields; + } redirtbl[KVM_IOAPIC_NUM_PINS]; +}; + enum kvm_irqchip_id { KVM_IRQCHIP_PIC_MASTER = 0, KVM_IRQCHIP_PIC_SLAVE = 1, + KVM_IRQCHIP_IOAPIC = 2, }; struct kvm_irqchip { @@ -76,6 +102,7 @@ struct kvm_irqchip { union { char dummy[512]; /* reserving space */ struct kvm_pic_state pic; + struct kvm_ioapic_state ioapic; } chip; }; |