Merge: Enable CONFIG_DMA_NUMA_CMA for aarch64 and x86_64

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/19

JIRA: https://issues.redhat.com/browse/RHEL-59621
Upstream status: RHEL-only

Signed-off-by: Chris von Recklinghausen <crecklin@redhat.com>

Approved-by: Rafael Aquini <raquini@redhat.com>
Approved-by: Jerry Snitselaar <jsnitsel@redhat.com>
Approved-by: David Hildenbrand <david@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Jan Stancek <jstancek@redhat.com>

Author: jstancek

kernel/dma/contiguous.c

@@ -159,6 +159,7 @@ static inline __maybe_unused phys_addr_t cma_early_percent_memory(void)
 static void __init dma_numa_cma_reserve(void)
 {
 	int nid;
+	unsigned int tech_preview = 0;
 
 	for_each_node(nid) {
 		int ret;
@@ -180,6 +181,7 @@ static void __init dma_numa_cma_reserve(void)
 			if (ret)
 				pr_warn("%s: reservation failed: err %d, node %d", __func__,
 					ret, nid);
+			tech_preview += 1;
 		}
 
 		if (numa_cma_size[nid]) {
@@ -191,8 +193,11 @@ static void __init dma_numa_cma_reserve(void)
 			if (ret)
 				pr_warn("%s: reservation failed: err %d, node %d", __func__,
 					ret, nid);
+			tech_preview += 1;
 		}
 	}
+	if (tech_preview)
+		mark_tech_preview("dma-numa-cma-reserve", NULL);
 }
 #else
 static inline void __init dma_numa_cma_reserve(void)