Re: [Xen-devel] [PATCH] x86/boot: Remove stack segment parameter from smpboot.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.08.13 at 20:00, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
> The stack segment is legacy remnant of a 32bit hypervisor, and not used in
> 64bit.  Furthermore, the unsigned short in the structure actually aliases
> whatever the linker decides to put next in the data section.
> 
> Drop the extern struct definition and change it to a simple void pointer,
> which matches its definition in arch/x86/boot/x86_64.S

I'll commit this, but I think we could go further and eliminate
stack_start altogether - the boot code can load %rsp from
stack_base[] quite fine I would think.

Jan


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