diff options
| author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-12-16 16:12:19 +0530 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2021-02-10 14:31:08 +1100 |
| commit | d9a47edabc4f948102753fa9d41f2dc1dbeb28be (patch) | |
| tree | afb1d92533ddbbe90a25ecb796d6a1703386acf4 /Documentation/virt | |
| parent | bd1de1a0e6eff4bde5ceae969673b85b8446fd6a (diff) | |
KVM: PPC: Book3S HV: Introduce new capability for 2nd DAWR
Introduce KVM_CAP_PPC_DAWR1 which can be used by QEMU to query whether
KVM supports 2nd DAWR or not. The capability is by default disabled
even when the underlying CPU supports 2nd DAWR. QEMU needs to check
and enable it manually to use the feature.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'Documentation/virt')
| -rw-r--r-- | Documentation/virt/kvm/api.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index a783a8da818b..45fd862ac128 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -6215,6 +6215,16 @@ the bus lock vm exit can be preempted by a higher priority VM exit, the exit notifications to userspace can be KVM_EXIT_BUS_LOCK or other reasons. KVM_RUN_BUS_LOCK flag is used to distinguish between them. +7.22 KVM_CAP_PPC_DAWR1 +---------------------- + +:Architectures: ppc +:Parameters: none +:Returns: 0 on success, -EINVAL when CPU doesn't support 2nd DAWR + +This capability can be used to check / enable 2nd DAWR feature provided +by POWER10 processor. + 8. Other capabilities. ====================== |