Bring into line with the comments for the other structures and their
KVM_EXIT_* cases. Also update api.txt to reflect use in kvm_run
documentation.

Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
Reviewed-by: David Hildenbrand <d...@linux.vnet.ibm.com>
Reviewed-by: Andrew Jones <drjo...@redhat.com>
Acked-by: Christoffer Dall <christoffer.d...@linaro.org>

---

v2
  - add comments for other exit types
v3
  - s/commentary/comments/
  - add rb tags
  - update api.txt kvm_run to include KVM_EXIT_DEBUG desc
v4
  - sp fixes
  - add a-b
---
 Documentation/virtual/kvm/api.txt | 4 +++-
 include/uapi/linux/kvm.h          | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/virtual/kvm/api.txt 
b/Documentation/virtual/kvm/api.txt
index 9fa2bf8..c34c32d 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -3070,11 +3070,13 @@ data_offset describes where the data is located 
(KVM_EXIT_IO_OUT) or
 where kvm expects application code to place the data for the next
 KVM_RUN invocation (KVM_EXIT_IO_IN).  Data format is a packed array.
 
+               /* KVM_EXIT_DEBUG */
                struct {
                        struct kvm_debug_exit_arch arch;
                } debug;
 
-Unused.
+If the exit_reason is KVM_EXIT_DEBUG, then a vcpu is processing a debug event
+for which architecture specific information is returned.
 
                /* KVM_EXIT_MMIO */
                struct {
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 4b60056..70ac641 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -237,6 +237,7 @@ struct kvm_run {
                        __u32 count;
                        __u64 data_offset; /* relative to kvm_run start */
                } io;
+               /* KVM_EXIT_DEBUG */
                struct {
                        struct kvm_debug_exit_arch arch;
                } debug;
@@ -285,6 +286,7 @@ struct kvm_run {
                        __u32 data;
                        __u8  is_write;
                } dcr;
+               /* KVM_EXIT_INTERNAL_ERROR */
                struct {
                        __u32 suberror;
                        /* Available with KVM_CAP_INTERNAL_ERROR_DATA: */
@@ -295,6 +297,7 @@ struct kvm_run {
                struct {
                        __u64 gprs[32];
                } osi;
+               /* KVM_EXIT_PAPR_HCALL */
                struct {
                        __u64 nr;
                        __u64 ret;
-- 
2.4.3

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