[PATCH 2/3] cxl/acpi: Group xor arithmetric setup code in a single block

Robert Richter
2025-11-12T20:51:39Z

Simplify the xor arithmetric setup code by grouping it in a single
block. No need to split the block for QoS setup.

It is safe to reorder the call of cxl_setup_extended_linear_cache()
because there are no dependencies.

Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Robert Richter <rrichter@amd.com>
---
v2: spell fix in descripton (Jonathan),
---
---
drivers/cxl/acpi.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c
index fab736aa77dc..50c2987e0459 100644
--- a/drivers/cxl/acpi.c
+++ b/drivers/cxl/acpi.c
@@ -465,8 +465,6 @@ static int __cxl_parse_cfmws(struct acpi_cedt_cfmws *cfmws,
ig = CXL_DECODER_MIN_GRANULARITY;
cxld->interleave_granularity = ig;

- cxl_setup_extended_linear_cache(cxlrd);
-
if (cfmws->interleave_arithmetic == ACPI_CEDT_CFMWS_ARITHMETIC_XOR) {
if (ways != 1 && ways != 3) {
cxims_ctx = (struct cxl_cxims_context) {
@@ -482,15 +480,14 @@ static int __cxl_parse_cfmws(struct acpi_cedt_cfmws *cfmws,
return -EINVAL;
}
}
- }
-
- cxlrd->qos_class = cfmws->qtg_id;
-
- if (cfmws->interleave_arithmetic == ACPI_CEDT_CFMWS_ARITHMETIC_XOR) {
cxlrd->ops.hpa_to_spa = cxl_apply_xor_maps;
cxlrd->ops.spa_to_hpa = cxl_apply_xor_maps;
}

+ cxl_setup_extended_linear_cache(cxlrd);
+
+ cxlrd->qos_class = cfmws->qtg_id;
+
rc = cxl_decoder_add(cxld);
if (rc)
return rc;
--
2.47.3