diff options
| author | Radim Krčmář <rkrcmar@redhat.com> | 2017-09-07 16:46:46 +0200 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2017-09-07 16:46:46 +0200 |
| commit | 6e0ff1b4dbe2dcd31d903f691b2bb887206405f1 (patch) | |
| tree | 646643c47fc4c0df3aed4b79f451ee7aaf56d0df /Documentation | |
| parent | 712b12d72451411c40e39d25e2140fb8c7fd0e49 (diff) | |
| parent | c95c895303ed13e883e0e6386e0b978174329210 (diff) | |
Merge tag 'kvm-s390-next-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux
KVM: s390: Fixes and features for 4.14
- merge of topic branch tlb-flushing from the s390 tree to get the
no-dat base features
- merge of kvm/master to avoid conflicts with additional sthyi fixes
- wire up the no-dat enhancements in KVM
- multiple epoch facility (z14 feature)
- Configuration z/Architecture Mode
- more sthyi fixes
- gdb server range checking fix
- small code cleanups
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virtual/kvm/devices/vm.txt | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/Documentation/virtual/kvm/devices/vm.txt b/Documentation/virtual/kvm/devices/vm.txt index 903fc926860b..95ca68d663a4 100644 --- a/Documentation/virtual/kvm/devices/vm.txt +++ b/Documentation/virtual/kvm/devices/vm.txt @@ -176,7 +176,8 @@ Architectures: s390 3.1. ATTRIBUTE: KVM_S390_VM_TOD_HIGH -Allows user space to set/get the TOD clock extension (u8). +Allows user space to set/get the TOD clock extension (u8) (superseded by +KVM_S390_VM_TOD_EXT). Parameters: address of a buffer in user space to store the data (u8) to Returns: -EFAULT if the given address is not accessible from kernel space @@ -190,6 +191,17 @@ the POP (u64). Parameters: address of a buffer in user space to store the data (u64) to Returns: -EFAULT if the given address is not accessible from kernel space +3.3. ATTRIBUTE: KVM_S390_VM_TOD_EXT +Allows user space to set/get bits 0-63 of the TOD clock register as defined in +the POP (u64). If the guest CPU model supports the TOD clock extension (u8), it +also allows user space to get/set it. If the guest CPU model does not support +it, it is stored as 0 and not allowed to be set to a value != 0. + +Parameters: address of a buffer in user space to store the data + (kvm_s390_vm_tod_clock) to +Returns: -EFAULT if the given address is not accessible from kernel space + -EINVAL if setting the TOD clock extension to != 0 is not supported + 4. GROUP: KVM_S390_VM_CRYPTO Architectures: s390 |