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| author | Fabiano Rosas <farosas@linux.ibm.com> | 2019-06-19 13:01:27 -0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2019-10-21 15:55:22 +1100 |
| commit | 1a9167a214f560a23c5050ce6dfebae489528f0d (patch) | |
| tree | 0ef8fd0582efe7a784c0d2cc469e30d6c5dfe92c /Documentation/virt | |
| parent | 12ade69c1eb9958b13374edf5ef742ea20ccffde (diff) | |
| download | linux-1a9167a214f560a23c5050ce6dfebae489528f0d.tar.bz2 | |
KVM: PPC: Report single stepping capability
When calling the KVM_SET_GUEST_DEBUG ioctl, userspace might request
the next instruction to be single stepped via the
KVM_GUESTDBG_SINGLESTEP control bit of the kvm_guest_debug structure.
This patch adds the KVM_CAP_PPC_GUEST_DEBUG_SSTEP capability in order
to inform userspace about the state of single stepping support.
We currently don't have support for guest single stepping implemented
in Book3S HV so the capability is only present for Book3S PR and
BookE.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'Documentation/virt')
| -rw-r--r-- | Documentation/virt/kvm/api.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/api.txt b/Documentation/virt/kvm/api.txt index 4833904d32a5..f94d06a12d20 100644 --- a/Documentation/virt/kvm/api.txt +++ b/Documentation/virt/kvm/api.txt @@ -2982,6 +2982,9 @@ can be determined by querying the KVM_CAP_GUEST_DEBUG_HW_BPS and KVM_CAP_GUEST_DEBUG_HW_WPS capabilities which return a positive number indicating the number of supported registers. +For ppc, the KVM_CAP_PPC_GUEST_DEBUG_SSTEP capability indicates whether +the single-step debug event (KVM_GUESTDBG_SINGLESTEP) is supported. + When debug events exit the main run loop with the reason KVM_EXIT_DEBUG with the kvm_debug_exit_arch part of the kvm_run structure containing architecture specific debug information. |