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KVM: s390: pv: Add query interface

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Some of the query information is already available via sysfs but
having a IOCTL makes the information easier to retrieve.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Link: https://lore.kernel.org/r/20220517163629.3443-4-frankja@linux.ibm.com
Message-Id: <20220517163629.3443-4-frankja@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
This commit is contained in:
Janosch Frank
2022-05-17 16:36:21 +00:00
committed by Christian Borntraeger
parent 38c218259d
commit 35d02493db
2 changed files with 101 additions and 0 deletions
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25
include/uapi/linux/kvm.h
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@@ -1660,6 +1660,30 @@ struct kvm_s390_pv_unp {
__u64 tweak;
};
enum pv_cmd_info_id {
KVM_PV_INFO_VM,
};
struct kvm_s390_pv_info_vm {
__u64 inst_calls_list[4];
__u64 max_cpus;
__u64 max_guests;
__u64 max_guest_addr;
__u64 feature_indication;
};
struct kvm_s390_pv_info_header {
__u32 id;
__u32 len_max;
__u32 len_written;
__u32 reserved;
};
struct kvm_s390_pv_info {
struct kvm_s390_pv_info_header header;
struct kvm_s390_pv_info_vm vm;
};
enum pv_cmd_id {
KVM_PV_ENABLE,
KVM_PV_DISABLE,
@@ -1668,6 +1692,7 @@ enum pv_cmd_id {
KVM_PV_VERIFY,
KVM_PV_PREP_RESET,
KVM_PV_UNSHARE_ALL,
KVM_PV_INFO,
};
struct kvm_pv_cmd {