Re: [PATCH v12 12/21] x86/xen: Add xen_cpuid() and xen_setup_gdt() to stacktool whitelists

[David Vrabel]

On 09/09/15 14:21, Josh Poimboeuf wrote:
> stacktool reports the following false positive warnings:
> 
>   stacktool: arch/x86/xen/enlighten.o: xen_cpuid()+0x41: can't find jump dest instruction at .text+0x108
>   stacktool: arch/x86/xen/enlighten.o: xen_setup_gdt.constprop.23()+0x2e: kernel entry/exit from callable instruction
> 
> The first warning is due to xen_cpuid()'s use of XEN_EMULATE_PREFIX to
> insert some fake instructions which stacktool doesn't know how to
> decode.
> 
> The second warning is due to xen_setup_gdt()'s use of an lret
> instruction, which stacktool normally doesn't allow in callable
> functions.  But this seems to be a valid use of the instruction.
> 
> Add both functions to the stacktool whitelist.

Reviewed-by: David Vrabel <david.vrabel@xxxxxxxxxx>

David
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