[xen staging-4.22] EFI: don't use alias attribute for compat hypercall stubs

[patchbot@xxxxxxx]

commit cc07f4b05803b89a7a6a78c8324da5aba9a192d9
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Thu Sep 10 12:33:11 2026 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Sep 10 12:33:11 2026 +0200

    EFI: don't use alias attribute for compat hypercall stubs
    
    Recent Clang objects to types differing between alias and aliasee. Accept
    the unnecessary overhead and make the two compat stubs real functions.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
    master commit: 5df9425a733ea42613d2f414ec88d2c770ea4c20
    master date: 2026-09-09 14:15:15 +0200
---
 xen/common/efi/common-stub.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/xen/common/efi/common-stub.c b/xen/common/efi/common-stub.c
index f91ba6f740..b1462883ec 100644
--- a/xen/common/efi/common-stub.c
+++ b/xen/common/efi/common-stub.c
@@ -27,10 +27,14 @@ int efi_runtime_call(struct xenpf_efi_runtime_call *op)
 
 #ifdef CONFIG_COMPAT
 
-int efi_compat_get_info(uint32_t idx, union compat_pf_efi_info *)
-    __attribute__((__alias__("efi_get_info")));
+int efi_compat_get_info(uint32_t idx, union compat_pf_efi_info *info)
+{
+    return -ENOSYS;
+}
 
-int efi_compat_runtime_call(struct compat_pf_efi_runtime_call *)
-    __attribute__((__alias__("efi_runtime_call")));
+int efi_compat_runtime_call(struct compat_pf_efi_runtime_call *op)
+{
+    return -ENOSYS;
+}
 
 #endif
--
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