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| author | Michael Mueller <mimu@linux.vnet.ibm.com> | 2013-06-28 13:30:24 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-01-17 13:12:01 +0100 |
| commit | 7feb6bb8e6dbd129c11fc93bf206daa156bf1c0f (patch) | |
| tree | 383c77a8523822b940c68a42a323d4da949697d2 /arch/s390/include/asm/kvm_host.h | |
| parent | 26a865f4aa8e66a6d94958de7656f7f1b03c6c56 (diff) | |
| download | op-kernel-dev-7feb6bb8e6dbd129c11fc93bf206daa156bf1c0f.zip op-kernel-dev-7feb6bb8e6dbd129c11fc93bf206daa156bf1c0f.tar.gz | |
KVM: s390: enable Transactional Execution
This patch enables transactional execution for KVM guests
on s390 systems zec12 or later.
We rework the allocation of the page containing the sie_block
to also back the Interception Transaction Diagnostic Block.
If available the TE facilities will be enabled.
Setting bit 73 and 50 in vfacilities bitmask reveals the HW
facilities Transactional Memory and Constraint Transactional
Memory respectively to the KVM guest.
Furthermore, the patch restores the Program-Interruption TDB
from the Interception TDB in case a program interception has
occurred and the ITDB has a valid format.
Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/kvm_host.h')
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index d5bc375..eef3dd3 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -106,9 +106,22 @@ struct kvm_s390_sie_block { __u64 gbea; /* 0x0180 */ __u8 reserved188[24]; /* 0x0188 */ __u32 fac; /* 0x01a0 */ - __u8 reserved1a4[92]; /* 0x01a4 */ + __u8 reserved1a4[68]; /* 0x01a4 */ + __u64 itdba; /* 0x01e8 */ + __u8 reserved1f0[16]; /* 0x01f0 */ } __attribute__((packed)); +struct kvm_s390_itdb { + __u8 data[256]; +} __packed; + +struct sie_page { + struct kvm_s390_sie_block sie_block; + __u8 reserved200[1024]; /* 0x0200 */ + struct kvm_s390_itdb itdb; /* 0x0600 */ + __u8 reserved700[2304]; /* 0x0700 */ +} __packed; + struct kvm_vcpu_stat { u32 exit_userspace; u32 exit_null; |
