Use newly introduced TDCALL_0() instead of __tdcall() to issue
PAGE_ACCEPT tdcall.

It cuts code bloat substantially:

Function                                     old     new   delta
tdx_accept_memory                            592     233    -359

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
 arch/x86/coco/tdx/tdx-shared.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/coco/tdx/tdx-shared.c b/arch/x86/coco/tdx/tdx-shared.c
index 1655aa56a0a5..9104e96eeefd 100644
--- a/arch/x86/coco/tdx/tdx-shared.c
+++ b/arch/x86/coco/tdx/tdx-shared.c
@@ -5,8 +5,8 @@ static unsigned long try_accept_one(phys_addr_t start, unsigned long len,
 				    enum pg_level pg_level)
 {
 	unsigned long accept_size = page_level_size(pg_level);
-	struct tdx_module_args args = {};
 	u8 page_size;
+	u64 ret;
 
 	if (!IS_ALIGNED(start, accept_size))
 		return 0;
@@ -34,8 +34,8 @@ static unsigned long try_accept_one(phys_addr_t start, unsigned long len,
 		return 0;
 	}
 
-	args.rcx = start | page_size;
-	if (__tdcall(TDG_MEM_PAGE_ACCEPT, &args))
+	ret = TDCALL_0(TDG_MEM_PAGE_ACCEPT, start | page_size, 0, 0, 0);
+	if (ret)
 		return 0;
 
 	return accept_size;
-- 
2.43.0