Re: [PATCH v2 01/21] docs/memory-barriers.txt: Rewrite "KERNEL I/O BARRIER EFFECTS" section

[Benjamin Herrenschmidt]

On Thu, 2019-04-11 at 15:34 -0700, Linus Torvalds wrote:
> On Thu, Apr 11, 2019 at 3:13 PM Benjamin Herrenschmidt
> <benh@xxxxxxxxxxxxxxxxxxx> wrote:
> > 
> > Minor nit... I would have said "All readX() and writeX() accesses
> > _from
> > the same CPU_ to the same peripheral... and then s/the CPU/this
> > CPU.
> 
> Maybe talk about "same thread" rather than "same cpu", with the
> understanding that scheduling/preemption has to include the
> appropriate cross-CPU IO barrier?

Works for me, but why not spell all this out in the document ? We know,
but others might not.

Cheers,
Ben.