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Merge tag 'kvm-s390-pci-5.20' into kernelorgnext

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KVM: s390/pci: enable zPCI for interpretive execution

Add the necessary code in s390 base, pci and KVM to enable interpretion
of PCI pasthru.
This commit is contained in:
Christian Borntraeger
2022-07-11 11:28:57 +02:00
parent 4b88b1a518 4ac34b94a5
commit d41b5e0176
32 changed files with 1278 additions and 56 deletions
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31
include/uapi/linux/kvm.h
View File

@@ -1167,6 +1167,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_X86_TRIPLE_FAULT_EVENT 218
#define KVM_CAP_X86_NOTIFY_VMEXIT 219
#define KVM_CAP_VM_DISABLE_NX_HUGE_PAGES 220
#define KVM_CAP_S390_ZPCI_OP 221
#ifdef KVM_CAP_IRQ_ROUTING
@@ -2186,4 +2187,34 @@ struct kvm_stats_desc {
#define KVM_X86_NOTIFY_VMEXIT_ENABLED (1ULL << 0)
#define KVM_X86_NOTIFY_VMEXIT_USER (1ULL << 1)
/* Available with KVM_CAP_S390_ZPCI_OP */
#define KVM_S390_ZPCI_OP _IOW(KVMIO, 0xd1, struct kvm_s390_zpci_op)
struct kvm_s390_zpci_op {
/* in */
__u32 fh; /* target device */
__u8 op; /* operation to perform */
__u8 pad[3];
union {
/* for KVM_S390_ZPCIOP_REG_AEN */
struct {
__u64 ibv; /* Guest addr of interrupt bit vector */
__u64 sb; /* Guest addr of summary bit */
__u32 flags;
__u32 noi; /* Number of interrupts */
__u8 isc; /* Guest interrupt subclass */
__u8 sbo; /* Offset of guest summary bit vector */
__u16 pad;
} reg_aen;
__u64 reserved[8];
} u;
};
/* types for kvm_s390_zpci_op->op */
#define KVM_S390_ZPCIOP_REG_AEN 0
#define KVM_S390_ZPCIOP_DEREG_AEN 1
/* flags for kvm_s390_zpci_op->u.reg_aen.flags */
#define KVM_S390_ZPCIOP_REGAEN_HOST (1 << 0)
#endif /* __LINUX_KVM_H */

7
include/uapi/linux/vfio_zdev.h
View File

@@ -29,6 +29,9 @@ struct vfio_device_info_cap_zpci_base {
__u16 fmb_length; /* Measurement Block Length (in bytes) */
__u8 pft; /* PCI Function Type */
__u8 gid; /* PCI function group ID */
/* End of version 1 */
__u32 fh; /* PCI function handle */
/* End of version 2 */
};
/**
@@ -47,6 +50,10 @@ struct vfio_device_info_cap_zpci_group {
__u16 noi; /* Maximum number of MSIs */
__u16 maxstbl; /* Maximum Store Block Length */
__u8 version; /* Supported PCI Version */
/* End of version 1 */
__u8 reserved;
__u16 imaxstbl; /* Maximum Interpreted Store Block Length */
/* End of version 2 */
};
/**