Re: [PATCHv2 1/4] x86_64: cleanup THREAD_INFO(reg,offset) macro

[Denys Vlasenko]

On Sun, Jan 18, 2015 at 12:45 PM, Alexander van Heukelum
<heukelum@xxxxxxxxxxx> wrote:
> The macro THREAD_INFO(reg,offset) is used in assembly to compute the
> offset between the user ptregs and the thread_info struct. Change
> the macro and all its uses so that offset is given as the current
> top of stack in the pt_regs frame. The generated code is identical.

What is the purpose of doing this?

I don't mean to say that it's pointless, but it is also not obvious
why it's better than the code before patch.
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