Patch-mainline: v5.19-rc1
Git-commit: 5af14c29f7a0e6d1fcee44c4ed4a2d12a49c4a43
References: jsc#PED-342
From: Borislav Petkov <bp@suse.de>
Date: Wed, 20 Apr 2022 13:45:49 +0200
Subject: [PATCH] x86/tdx: Annotate a noreturn function
objdump complains:
vmlinux.o: warning: objtool: __tdx_hypercall()+0x74: unreachable instruction
because __tdx_hypercall_failed() won't return but panic the guest.
Annotate that that is ok and desired.
Fixes: eb94f1b6a70a ("x86/tdx: Add __tdx_module_call() and __tdx_hypercall() helper functions")
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220420115025.5448-1-bp@alien8.de
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/coco/tdx/tdcall.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/coco/tdx/tdcall.S b/arch/x86/coco/tdx/tdcall.S
index 245888290bb6..eeb4511dc414 100644
--- a/arch/x86/coco/tdx/tdcall.S
+++ b/arch/x86/coco/tdx/tdcall.S
@@ -200,5 +200,6 @@ SYM_FUNC_START(__tdx_hypercall)
.Lpanic:
call __tdx_hypercall_failed
/* __tdx_hypercall_failed never returns */
+ REACHABLE
jmp .Lpanic
SYM_FUNC_END(__tdx_hypercall)
--
2.35.3