[PATCH 10/20] x86/tdx: Convert GET_QUOTE hypercall to use new TDVMCALL macros

Kirill A. Shutemov
2024-05-17T14:20:01Z

Use newly introduced TDVMCALL_0() instead of __tdx_hypercall() to issue
GET_QUOTE hypercall.

It cuts code bloat substantially:

Function old new delta
tdx_hcall_get_quote 188 76 -112

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
arch/x86/coco/tdx/tdx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
index 7c874a50a319..3f0be1d3cccb 100644
--- a/arch/x86/coco/tdx/tdx.c
+++ b/arch/x86/coco/tdx/tdx.c
@@ -150,7 +150,8 @@ EXPORT_SYMBOL_GPL(tdx_mcall_get_report0);
u64 tdx_hcall_get_quote(u8 *buf, size_t size)
{
/* Since buf is a shared memory, set the shared (decrypted) bits */
- return _tdx_hypercall(TDVMCALL_GET_QUOTE, cc_mkdec(virt_to_phys(buf)), size, 0, 0);
+ return TDVMCALL_0(TDVMCALL_GET_QUOTE,
+ cc_mkdec(virt_to_phys(buf)), size, 0, 0);
}
EXPORT_SYMBOL_GPL(tdx_hcall_get_quote);

--
2.43.0