diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index b41ade9fda..a0d9f2bfe7 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -396,8 +396,9 @@ int libxl_get_physinfo(libxl_ctx *ctx, libxl_physinfo *physinfo)
     memcpy(physinfo->hw_cap,xcphysinfo.hw_cap, sizeof(physinfo->hw_cap));
 
     physinfo->cap_hvm = !!(xcphysinfo.capabilities & XEN_SYSCTL_PHYSCAP_hvm);
-    physinfo->cap_hvm_directio =
-        !!(xcphysinfo.capabilities & XEN_SYSCTL_PHYSCAP_hvm_directio);
+    physinfo->cap_directio =
+        !!(xcphysinfo.capabilities & XEN_SYSCTL_PHYSCAP_directio);
+    physinfo->cap_hvm_directio = physinfo->cap_hvm && physinfo->cap_directio;
 
     GC_FREE;
     return 0;
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index ae2d63df0c..2cfc1b08ad 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -67,6 +67,12 @@
  * the same $(XEN_VERSION) (e.g. throughout a major release).
  */
 
+/* LIBXL_HAVE_PHYSINFO_CAP_DIRECTIO
+ *
+ * If this is defined, libxl_physinfo has a "cap_directio" field.
+ */
+#define LIBXL_HAVE_PHYSINFO_CAP_DIRECTIO 1
+
 /* LIBXL_HAVE_CONSOLE_NOTIFY_FD
  *
  * If this is defined, libxl_console_exec and
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 4a385801ba..2cceb8c057 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -1014,6 +1014,7 @@ libxl_physinfo = Struct("physinfo", [
 
     ("cap_hvm", bool),
     ("cap_hvm_directio", bool),
+    ("cap_directio", bool),
     ], dir=DIR_OUT)
 
 libxl_connectorinfo = Struct("connectorinfo", [
diff --git a/tools/xl/xl_info.c b/tools/xl/xl_info.c
index 6c8be26119..93e2c5fa7d 100644
--- a/tools/xl/xl_info.c
+++ b/tools/xl/xl_info.c
@@ -210,9 +210,10 @@ static void output_physinfo(void)
          info.hw_cap[4], info.hw_cap[5], info.hw_cap[6], info.hw_cap[7]
         );
 
-    maybe_printf("virt_caps              :%s%s\n",
+    maybe_printf("virt_caps              :%s%s%s\n",
          info.cap_hvm ? " hvm" : "",
-         info.cap_hvm_directio ? " hvm_directio" : ""
+         info.cap_hvm_directio ? " hvm_directio" : "",
+         info.cap_directio ? " directio" : ""
         );
 
     vinfo = libxl_get_version_info(ctx);
diff --git a/xen/arch/x86/sysctl.c b/xen/arch/x86/sysctl.c
index e704ed7f1c..456dc58d8f 100644
--- a/xen/arch/x86/sysctl.c
+++ b/xen/arch/x86/sysctl.c
@@ -93,7 +93,7 @@ void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
     if ( hvm_enabled )
         pi->capabilities |= XEN_SYSCTL_PHYSCAP_hvm;
     if ( iommu_enabled )
-        pi->capabilities |= XEN_SYSCTL_PHYSCAP_hvm_directio;
+        pi->capabilities |= XEN_SYSCTL_PHYSCAP_directio;
 }
 
 long arch_do_sysctl(
diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h
index 839c1b9f25..8cd0a9cb0d 100644
--- a/xen/include/public/sysctl.h
+++ b/xen/include/public/sysctl.h
@@ -36,7 +36,7 @@
 #include "physdev.h"
 #include "tmem.h"
 
-#define XEN_SYSCTL_INTERFACE_VERSION 0x00000011
+#define XEN_SYSCTL_INTERFACE_VERSION 0x00000012
 
 /*
  * Read console content from Xen buffer ring.
@@ -85,9 +85,9 @@ struct xen_sysctl_tbuf_op {
  /* (x86) The platform supports HVM guests. */
 #define _XEN_SYSCTL_PHYSCAP_hvm          0
 #define XEN_SYSCTL_PHYSCAP_hvm           (1u<<_XEN_SYSCTL_PHYSCAP_hvm)
- /* (x86) The platform supports HVM-guest direct access to I/O devices. */
-#define _XEN_SYSCTL_PHYSCAP_hvm_directio 1
-#define XEN_SYSCTL_PHYSCAP_hvm_directio  (1u<<_XEN_SYSCTL_PHYSCAP_hvm_directio)
+ /* (x86) The platform supports direct access to I/O devices with IOMMU. */
+#define _XEN_SYSCTL_PHYSCAP_directio 1
+#define XEN_SYSCTL_PHYSCAP_directio  (1u<<_XEN_SYSCTL_PHYSCAP_directio)
 struct xen_sysctl_physinfo {
     uint32_t threads_per_core;
     uint32_t cores_per_socket;