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Two new features are added by this patch set:

Browse source 
- The floating interrupt controller (flic) that allows us to inject,
   clear and inspect non-vcpu local interrupts. This also gives us an
   opportunity to fix deficiencies in our existing interrupt definitions.
 - Support for asynchronous page faults via the pfault mechanism. Testing
   show significant guest performance improvements under host swap.
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Merge tag 'kvm-s390-20140130' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

Two new features are added by this patch set:
- The floating interrupt controller (flic) that allows us to inject,
  clear and inspect non-vcpu local interrupts. This also gives us an
  opportunity to fix deficiencies in our existing interrupt definitions.
- Support for asynchronous page faults via the pfault mechanism. Testing
  show significant guest performance improvements under host swap.
This commit is contained in:
Paolo Bonzini 2014-02-04 04:23:37 +01:00
commit f244d910ea
20 changed files with 827 additions and 109 deletions
Download patch file Download diff file Expand all files Collapse all files

66
include/uapi/linux/kvm.h
View file

@ -413,6 +413,8 @@ struct kvm_s390_psw {
#define KVM_S390_PROGRAM_INT 0xfffe0001u
#define KVM_S390_SIGP_SET_PREFIX 0xfffe0002u
#define KVM_S390_RESTART 0xfffe0003u
#define KVM_S390_INT_PFAULT_INIT 0xfffe0004u
#define KVM_S390_INT_PFAULT_DONE 0xfffe0005u
#define KVM_S390_MCHK 0xfffe1000u
#define KVM_S390_INT_VIRTIO 0xffff2603u
#define KVM_S390_INT_SERVICE 0xffff2401u
@ -434,6 +436,69 @@ struct kvm_s390_interrupt {
__u64 parm64;
};
struct kvm_s390_io_info {
__u16 subchannel_id;
__u16 subchannel_nr;
__u32 io_int_parm;
__u32 io_int_word;
};
struct kvm_s390_ext_info {
__u32 ext_params;
__u32 pad;
__u64 ext_params2;
};
struct kvm_s390_pgm_info {
__u64 trans_exc_code;
__u64 mon_code;
__u64 per_address;
__u32 data_exc_code;
__u16 code;
__u16 mon_class_nr;
__u8 per_code;
__u8 per_atmid;
__u8 exc_access_id;
__u8 per_access_id;
__u8 op_access_id;
__u8 pad[3];
};
struct kvm_s390_prefix_info {
__u32 address;
};
struct kvm_s390_extcall_info {
__u16 code;
};
struct kvm_s390_emerg_info {
__u16 code;
};
struct kvm_s390_mchk_info {
__u64 cr14;
__u64 mcic;
__u64 failing_storage_address;
__u32 ext_damage_code;
__u32 pad;
__u8 fixed_logout[16];
};
struct kvm_s390_irq {
__u64 type;
union {
struct kvm_s390_io_info io;
struct kvm_s390_ext_info ext;
struct kvm_s390_pgm_info pgm;
struct kvm_s390_emerg_info emerg;
struct kvm_s390_extcall_info extcall;
struct kvm_s390_prefix_info prefix;
struct kvm_s390_mchk_info mchk;
char reserved[64];
} u;
};
/* for KVM_SET_GUEST_DEBUG */
#define KVM_GUESTDBG_ENABLE 0x00000001
@ -855,6 +920,7 @@ struct kvm_device_attr {
#define KVM_DEV_VFIO_GROUP_ADD 1
#define KVM_DEV_VFIO_GROUP_DEL 2
#define KVM_DEV_TYPE_ARM_VGIC_V2 5
#define KVM_DEV_TYPE_FLIC 6
/*
* ioctls for VM fds