diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h
index 5950e0a092ca..6ba3b806e880 100644
--- a/arch/x86/include/asm/tdx.h
+++ b/arch/x86/include/asm/tdx.h
@@ -129,8 +129,11 @@ struct tdx_td {
 	struct page **tdcs_pages;
 };
 
+u64 tdh_mng_addcx(struct tdx_td *td, struct page *tdcs_page);
 u64 tdh_mng_key_config(struct tdx_td *td);
+u64 tdh_mng_create(struct tdx_td *td, u16 hkid);
 u64 tdh_mng_key_freeid(struct tdx_td *td);
+u64 tdh_mng_init(struct tdx_td *td, u64 td_params, u64 *extended_err);
 #else
 static inline void tdx_init(void) { }
 static inline int tdx_cpu_enable(void) { return -ENODEV; }
diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c
index 1ffbdb840004..ce4b1e96c5b0 100644
--- a/arch/x86/virt/vmx/tdx/tdx.c
+++ b/arch/x86/virt/vmx/tdx/tdx.c
@@ -1462,6 +1462,29 @@ static inline u64 tdx_tdr_pa(struct tdx_td *td)
 	return page_to_phys(td->tdr_page);
 }
 
+/*
+ * The TDX module exposes a CLFLUSH_BEFORE_ALLOC bit to specify whether
+ * a CLFLUSH of pages is required before handing them to the TDX module.
+ * Be conservative and make the code simpler by doing the CLFLUSH
+ * unconditionally.
+ */
+static void tdx_clflush_page(struct page *page)
+{
+	clflush_cache_range(page_to_virt(page), PAGE_SIZE);
+}
+
+u64 tdh_mng_addcx(struct tdx_td *td, struct page *tdcs_page)
+{
+	struct tdx_module_args args = {
+		.rcx = page_to_phys(tdcs_page),
+		.rdx = tdx_tdr_pa(td),
+	};
+
+	tdx_clflush_page(tdcs_page);
+	return seamcall(TDH_MNG_ADDCX, &args);
+}
+EXPORT_SYMBOL_GPL(tdh_mng_addcx);
+
 u64 tdh_mng_key_config(struct tdx_td *td)
 {
 	struct tdx_module_args args = {
@@ -1472,6 +1495,18 @@ u64 tdh_mng_key_config(struct tdx_td *td)
 }
 EXPORT_SYMBOL_GPL(tdh_mng_key_config);
 
+u64 tdh_mng_create(struct tdx_td *td, u16 hkid)
+{
+	struct tdx_module_args args = {
+		.rcx = tdx_tdr_pa(td),
+		.rdx = hkid,
+	};
+
+	tdx_clflush_page(td->tdr_page);
+	return seamcall(TDH_MNG_CREATE, &args);
+}
+EXPORT_SYMBOL_GPL(tdh_mng_create);
+
 u64 tdh_mng_key_freeid(struct tdx_td *td)
 {
 	struct tdx_module_args args = {
@@ -1481,3 +1516,19 @@ u64 tdh_mng_key_freeid(struct tdx_td *td)
 	return seamcall(TDH_MNG_KEY_FREEID, &args);
 }
 EXPORT_SYMBOL_GPL(tdh_mng_key_freeid);
+
+u64 tdh_mng_init(struct tdx_td *td, u64 td_params, u64 *extended_err)
+{
+	struct tdx_module_args args = {
+		.rcx = tdx_tdr_pa(td),
+		.rdx = td_params,
+	};
+	u64 ret;
+
+	ret = seamcall_ret(TDH_MNG_INIT, &args);
+
+	*extended_err = args.rcx;
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tdh_mng_init);
diff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h
index 5579317f67ab..0861c3f09576 100644
--- a/arch/x86/virt/vmx/tdx/tdx.h
+++ b/arch/x86/virt/vmx/tdx/tdx.h
@@ -15,8 +15,11 @@
 /*
  * TDX module SEAMCALL leaf functions
  */
+#define TDH_MNG_ADDCX			1
 #define TDH_MNG_KEY_CONFIG		8
+#define TDH_MNG_CREATE			9
 #define TDH_MNG_KEY_FREEID		20
+#define TDH_MNG_INIT			21
 #define TDH_PHYMEM_PAGE_RDMD		24
 #define TDH_SYS_KEY_CONFIG		31
 #define TDH_SYS_INIT			33