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x86/tdx: Annotate a noreturn function

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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: eb94f1b6a7 ("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
This commit is contained in:
Borislav Petkov
2022-04-20 13:45:49 +02:00
parent 5196401556
commit 5af14c29f7
1 changed files with 1 additions and 0 deletions
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arch/x86/coco/tdx/tdcall.S
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@@ -200,5 +200,6 @@ SYM_FUNC_START(__tdx_hypercall)
.Lpanic: .Lpanic:
call __tdx_hypercall_failed call __tdx_hypercall_failed
/* __tdx_hypercall_failed never returns */ /* __tdx_hypercall_failed never returns */
REACHABLE
jmp .Lpanic jmp .Lpanic
SYM_FUNC_END(__tdx_hypercall) SYM_FUNC_END(__tdx_hypercall)