diff options
| author | He, Qing <qing.he@intel.com> | 2007-07-26 11:05:18 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:25 +0200 |
| commit | 6ceb9d791eeeb0a5493958f5d6d4dc7d91e59cf7 (patch) | |
| tree | 8cef21acf9346fdbea36075029dc007fe969b51e /include | |
| parent | 9cf98828d12285d1fb43e774c8c100a55f8f34e1 (diff) | |
KVM: Add get/set irqchip ioctls for in-kernel PIC live migration support
This patch adds two new ioctls to dump and write kernel irqchips for
save/restore and live migration. PIC s/r and l/m is implemented in this
patch.
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kvm.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h index b0a13d1b34c..6560f11870f 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -45,6 +45,40 @@ struct kvm_irq_level { __u32 level; }; +/* for KVM_GET_IRQCHIP / KVM_SET_IRQCHIP */ +struct kvm_pic_state { + __u8 last_irr; /* edge detection */ + __u8 irr; /* interrupt request register */ + __u8 imr; /* interrupt mask register */ + __u8 isr; /* interrupt service register */ + __u8 priority_add; /* highest irq priority */ + __u8 irq_base; + __u8 read_reg_select; + __u8 poll; + __u8 special_mask; + __u8 init_state; + __u8 auto_eoi; + __u8 rotate_on_auto_eoi; + __u8 special_fully_nested_mode; + __u8 init4; /* true if 4 byte init */ + __u8 elcr; /* PIIX edge/trigger selection */ + __u8 elcr_mask; +}; + +enum kvm_irqchip_id { + KVM_IRQCHIP_PIC_MASTER = 0, + KVM_IRQCHIP_PIC_SLAVE = 1, +}; + +struct kvm_irqchip { + __u32 chip_id; + __u32 pad; + union { + char dummy[512]; /* reserving space */ + struct kvm_pic_state pic; + } chip; +}; + enum kvm_exit_reason { KVM_EXIT_UNKNOWN = 0, KVM_EXIT_EXCEPTION = 1, @@ -299,6 +333,8 @@ struct kvm_signal_mask { /* Device model IOC */ #define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60) #define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level) +#define KVM_GET_IRQCHIP _IOWR(KVMIO, 0x62, struct kvm_irqchip) +#define KVM_SET_IRQCHIP _IOR(KVMIO, 0x63, struct kvm_irqchip) /* * ioctls for vcpu fds |