[PATCH] tools/ocaml: Add missing vmtrace_buf_kb field

[Petr Beneš]

From: Petr Beneš <w1be...@gmail.com>

Add the missing `vmtrace_buf_kb` field to the OCaml bindings to match the
vm.cfg configuration, correcting an oversight from its initial introduction.

Signed-off-by: Petr Beneš <w1be...@gmail.com>
---
 tools/ocaml/libs/xc/xenctrl.ml      |  1 +
 tools/ocaml/libs/xc/xenctrl.mli     |  1 +
 tools/ocaml/libs/xc/xenctrl_stubs.c | 13 +++++++++++--
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/tools/ocaml/libs/xc/xenctrl.ml b/tools/ocaml/libs/xc/xenctrl.ml
index d6c6eb73db..55923857ec 100644
--- a/tools/ocaml/libs/xc/xenctrl.ml
+++ b/tools/ocaml/libs/xc/xenctrl.ml
@@ -85,6 +85,7 @@ type domctl_create_config =
     max_grant_frames: int;
     max_maptrack_frames: int;
     max_grant_version: int;
+    vmtrace_buf_kb: int32;
     cpupool_id: int32;
     arch: arch_domainconfig;
   }
diff --git a/tools/ocaml/libs/xc/xenctrl.mli b/tools/ocaml/libs/xc/xenctrl.mli
index 3bfc16edba..9b4b45db3a 100644
--- a/tools/ocaml/libs/xc/xenctrl.mli
+++ b/tools/ocaml/libs/xc/xenctrl.mli
@@ -77,6 +77,7 @@ type domctl_create_config = {
   max_grant_frames: int;
   max_maptrack_frames: int;
   max_grant_version: int;
+  vmtrace_buf_kb: int32;
   cpupool_id: int32;
   arch: arch_domainconfig;
 }
diff --git a/tools/ocaml/libs/xc/xenctrl_stubs.c 
b/tools/ocaml/libs/xc/xenctrl_stubs.c
index 3703f48c74..2b6d3c09df 100644
--- a/tools/ocaml/libs/xc/xenctrl_stubs.c
+++ b/tools/ocaml/libs/xc/xenctrl_stubs.c
@@ -210,10 +210,17 @@ CAMLprim value stub_xc_domain_create(value xch_val, value 
wanted_domid, value co
 #define VAL_MAX_GRANT_FRAMES    Field(config, 6)
 #define VAL_MAX_MAPTRACK_FRAMES Field(config, 7)
 #define VAL_MAX_GRANT_VERSION   Field(config, 8)
-#define VAL_CPUPOOL_ID          Field(config, 9)
-#define VAL_ARCH                Field(config, 10)
+#define VAL_VMTRACE_BUF_KB      Field(config, 9)
+#define VAL_CPUPOOL_ID          Field(config, 10)
+#define VAL_ARCH                Field(config, 11)
 
        uint32_t domid = Int_val(wanted_domid);
+       uint64_t vmtrace_size = Int32_val(VAL_VMTRACE_BUF_KB);
+
+       vmtrace_size = ROUNDUP(vmtrace_size << 10, XC_PAGE_SHIFT);
+       if ( vmtrace_size != (uint32_t)vmtrace_size )
+               caml_invalid_argument("vmtrace_buf_kb");
+
        int result;
        struct xen_domctl_createdomain cfg = {
                .ssidref = Int32_val(VAL_SSIDREF),
@@ -223,6 +230,7 @@ CAMLprim value stub_xc_domain_create(value xch_val, value 
wanted_domid, value co
                .max_maptrack_frames = Int_val(VAL_MAX_MAPTRACK_FRAMES),
                .grant_opts =
                    XEN_DOMCTL_GRANT_version(Int_val(VAL_MAX_GRANT_VERSION)),
+               .vmtrace_size = vmtrace_size,
                .cpupool_id = Int32_val(VAL_CPUPOOL_ID),
        };
 
@@ -279,6 +287,7 @@ CAMLprim value stub_xc_domain_create(value xch_val, value 
wanted_domid, value co
 
 #undef VAL_ARCH
 #undef VAL_CPUPOOL_ID
+#undef VAL_VMTRACE_BUF_KB
 #undef VAL_MAX_GRANT_VERSION
 #undef VAL_MAX_MAPTRACK_FRAMES
 #undef VAL_MAX_GRANT_FRAMES
-- 
2.34.1