[Xen-devel] [PATCH 2/6] vTPM: add HVM_PARAM_STUBDOM_VTPM parameter for HVM virtual machine

[Quan Xu <quan.xu@xxxxxxxxx>]

Signed-off-by: Quan Xu <quan.xu@xxxxxxxxx>
---
 tools/libxl/libxl_dom.c         | 2 ++
 xen/arch/x86/hvm/hvm.c          | 3 +++
 xen/include/public/hvm/params.h | 1 +
 3 files changed, 6 insertions(+)

diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index 74ea84b..a60e8c9 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -291,6 +291,8 @@ static void hvm_set_conf_params(xc_interface *handle, 
uint32_t domid,
 #if defined(__i386__) || defined(__x86_64__)
     xc_hvm_param_set(handle, domid, HVM_PARAM_HPET_ENABLED,
                     libxl_defbool_val(info->u.hvm.hpet));
+    xc_set_hvm_param(handle, domid, HVM_PARAM_STUBDOM_VTPM,
+                     info->num_vtpms);
 #endif
     xc_hvm_param_set(handle, domid, HVM_PARAM_TIMER_MODE, timer_mode(info));
     xc_hvm_param_set(handle, domid, HVM_PARAM_VPT_ALIGN,
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 78f519d..39e4c11 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -5696,6 +5696,9 @@ long do_hvm_op(unsigned long op, 
XEN_GUEST_HANDLE_PARAM(void) arg)
 
                 break;
             }
+            case HVM_PARAM_STUBDOM_VTPM:
+                rc = 0;
+                break;
             }
 
             if ( rc == 0 ) 
diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h
index 3c51072..333c131 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -56,6 +56,7 @@
 
 #if defined(__i386__) || defined(__x86_64__)
 
+#define HVM_PARAM_STUBDOM_VTPM 8
 /*
  * Viridian enlightenments
  *
-- 
1.8.3.2


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