diff mbox series

[v2,13/15] cxl: preclude device memory to be used for dax

Message ID 20240715172835.24757-14-alejandro.lucero-palau@amd.com
State Superseded
Headers show
Series cxl: add Type2 device support | expand

Commit Message

Lucero Palau, Alejandro July 15, 2024, 5:28 p.m. UTC 
From: Alejandro Lucero <alucero@os3sl.com>

By definition a type2 cxl device will use the host managed memory for
specific functionality, therefore it should not be available to other
uses.

Signed-off-by: Alejandro Lucero <alucerop@amd.com>
---
 drivers/cxl/core/region.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index 697c8df83a4b..c8fc14ac437e 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -3704,6 +3704,9 @@  static int cxl_region_probe(struct device *dev)
 	case CXL_DECODER_PMEM:
 		return devm_cxl_add_pmem_region(cxlr);
 	case CXL_DECODER_RAM:
+		if (cxlr->type != CXL_DECODER_HOSTONLYMEM)
+			return 0;
+
 		/*
 		 * The region can not be manged by CXL if any portion of
 		 * it is already online as 'System RAM'