linux-kernel - [PATCH v1 22/29] cxl/region: Use translated HPA ranges to create a region

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Message-ID: <20250107141015.3367194-23-rrichter@amd.com>
Date: Tue, 7 Jan 2025 15:10:08 +0100
From: Robert Richter <rrichter@....com>
To: 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>
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>,
	Robert Richter <rrichter@....com>
Subject: [PATCH v1 22/29] cxl/region: Use translated HPA ranges to create a region

To create a region, SPA ranges must be used. With address translation
the endpoint's HPA range is not the same as the SPA range. Use the
previously calculated SPA range instead.

Signed-off-by: Robert Richter <rrichter@....com>
---
 drivers/cxl/core/region.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index 681c26abc26e..e218f0be2409 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -3424,7 +3424,7 @@ static struct cxl_region *construct_region(struct cxl_root_decoder *cxlrd,
 {
 	struct cxl_memdev *cxlmd = cxled_to_memdev(cxled);
 	struct cxl_port *port = cxlrd_to_port(cxlrd);
-	struct range *hpa = &cxled->cxld.hpa_range;
+	struct range *spa = &cxled->spa_range;
 	struct cxl_region_params *p;
 	struct cxl_region *cxlr;
 	struct resource *res;
@@ -3462,7 +3462,7 @@ static struct cxl_region *construct_region(struct cxl_root_decoder *cxlrd,
 		goto err;
 	}
 
-	*res = DEFINE_RES_MEM_NAMED(hpa->start, range_len(hpa),
+	*res = DEFINE_RES_MEM_NAMED(spa->start, range_len(spa),
 				    dev_name(&cxlr->dev));
 	rc = insert_resource(cxlrd->res, res);
 	if (rc) {
-- 
2.39.5