[PATCH] x86: Fix early boot crash on gcc-10, next try

[David Laight]

From: Borislav Petkov
> Sent: 25 April 2020 18:53
...
> IOW, something like this (ontop) which takes care of the xen case too.
> If it needs to be used by all arches, then I'll split the patch:
.
> -	asm ("");
> +	prevent_tail_call_optimization();
>  }

One obvious implementation would be a real function call.
Which the compiler would convert into a tail call.
Just to confuse matters :-)

	David

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