Re: [PATCH 3/4] x86: Rewrite switch_to() code

[Ingo Molnar]

* Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:

> On Sat, May 21, 2016 at 9:04 AM, Brian Gerst <brgerst@xxxxxxxxx> wrote:
>
> > Move the low-level context switch code to an out-of-line asm stub instead of 
> > using complex inline asm.  This allows constructing a new stack frame for the 
> > child process to make it seamlessly flow to ret_from_fork without an extra 
> > test and branch in __switch_to().  It also improves code generation for 
> > __schedule() by using the C calling convention instead of clobbering all 
> > registers.
> 
> Just a heads up: I'm writing some code that conflicts with this patch. The 
> conflict will be easy to resolve, and, if this patch beats mine to -tip, I'll 
> rebase.

So I was expecting another iteration of this switch_to() series, but had no 
fundamental objections to the concept.

Thanks,

	Ingo