linux-kernel - Re: [PATCH v1 12/29] cxl: Modify address translation callback for generic use

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Message-ID: <Z312KLDlB7Hs1RB5@gourry-fedora-PF4VCD3F>
Date: Tue, 7 Jan 2025 13:44:56 -0500
From: Gregory Price <gourry@...rry.net>
To: Robert Richter <rrichter@....com>
Cc: 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>, linux-cxl@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Fabio M. De Francesco" <fabio.m.de.francesco@...ux.intel.com>,
	Terry Bowman <terry.bowman@....com>
Subject: Re: [PATCH v1 12/29] cxl: Modify address translation callback for
 generic use

On Tue, Jan 07, 2025 at 03:09:58PM +0100, Robert Richter wrote:
> The root decoder address translation callback could be reused for
> other decoders too. For generic use of the callback, change the
> function interface to use a decoder argument instead of the root
> decoder.
> 
> Signed-off-by: Robert Richter <rrichter@....com>
> ---
>  drivers/cxl/acpi.c        | 4 ++--
>  drivers/cxl/core/region.c | 2 +-
>  drivers/cxl/cxl.h         | 5 ++---
>  3 files changed, 5 insertions(+), 6 deletions(-)
> 
... snip ...
> diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
> index b3989dc58ed1..be7685fe8a23 100644
> --- a/drivers/cxl/cxl.h
> +++ b/drivers/cxl/cxl.h
> @@ -443,8 +443,7 @@ struct cxl_switch_decoder {
>  	struct cxl_dport *target[];
>  };
>  
> -struct cxl_root_decoder;
> -typedef u64 (*cxl_hpa_to_spa_fn)(struct cxl_root_decoder *cxlrd, u64 hpa);
> +typedef u64 (*cxl_to_hpa_fn)(struct cxl_decoder *cxld, u64 hpa);
>  

changed from _to_spa to _to_hpa? Was the name wrong previously? Maybe at
least comment on this in the changelog.