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KVM: s390: implement the RI support of guest

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This patch adds runtime instrumentation support for KVM guest. We need to
setup a save area for the runtime instrumentation-controls control block(RICCB)
and implement the necessary interfaces to live migrate the guest settings.

We setup the sie control block in a way, that the runtime
instrumentation instructions of a guest are handled by hardware.

We also add a capability KVM_CAP_S390_RI to make this feature opt-in as
it needs migration support.

Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Fan Zhang
2016-01-07 18:24:29 +08:00
committed by Christian Borntraeger
parent c57ee5faf4
commit c6e5f16637
4 changed files with 28 additions and 1 deletions
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3
arch/s390/include/asm/kvm_host.h
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@@ -217,7 +217,8 @@ struct kvm_s390_sie_block {
__u64 pp; /* 0x01de */
__u8 reserved1e6[2]; /* 0x01e6 */
__u64 itdba; /* 0x01e8 */
__u8 reserved1f0[16]; /* 0x01f0 */
__u64 riccbd; /* 0x01f0 */
__u8 reserved1f8[8]; /* 0x01f8 */
} __attribute__((packed));
struct kvm_s390_itdb {