linux-kernel - Re: [PATCH v1 16/29] cxl/region: Use translated HPA ranges to calculate the endpoint position

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Message-ID: <Z6NAyyyGzMJFJuDH@rric.localdomain>
Date: Wed, 5 Feb 2025 11:43:23 +0100
From: Robert Richter <rrichter@....com>
To: Ben Cheatham <benjamin.cheatham@....com>
Cc: linux-cxl@...r.kernel.org, linux-kernel@...r.kernel.org,
	Gregory Price <gourry@...rry.net>,
	"Fabio M. De Francesco" <fabio.m.de.francesco@...ux.intel.com>,
	Terry Bowman <terry.bowman@....com>,
	Alison Schofield <alison.schofield@...el.com>,
	Vishal Verma <vishal.l.verma@...el.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Davidlohr Bueso <dave@...olabs.net>
Subject: Re: [PATCH v1 16/29] cxl/region: Use translated HPA ranges to
 calculate the endpoint position

On 17.01.25 15:31:48, Ben Cheatham wrote:
> On 1/7/25 8:10 AM, Robert Richter wrote:
> > To enable address translation, the calculation of the endpoint
> > position must use translated HPA ranges. The function
> > cxl_endpoint_initialize() already uses translation which could be
> > reused to calculate the endpoint position.
> > 
> > Use translated HPA address ranges for the calculation of endpoint
> 
> s/HPA address ranges/HPA ranges/
> 
> > position by moving it to cxl_endpoint_initialize(). Create a function
> > cxl_port_calc_pos() for use in the iterator there, but keep a
> > simplified version of cxl_calc_interleave_pos() for the
> > non-auto-discovery code path without address translation since it is
> > not support there.
> > 
> > Signed-off-by: Robert Richter <rrichter@....com>
> > ---
> >  drivers/cxl/core/region.c | 66 ++++++++++++++++++++++++++-------------
> >  1 file changed, 44 insertions(+), 22 deletions(-)

Updated all the wording, thanks.

-Robert