[PATCH v3 1/1] of: fdt: Scan /memreserve/ last

From: Lucas Tanure
Date: Wed Apr 12 2023 - 18:46:41 EST


Change the order of scanning /memreserve/ and /reserved-memory node.
/reserved-memory node should go first, as it has a more updated
description of the memory regions and it can apply flags, like nomap.
Also, /memreserve/ should avoid reserving regions described in
/reserved-memory node.

Signed-off-by: Lucas Tanure <tanure@xxxxxxxxx>
---
drivers/of/fdt.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index d1a68b6d03b3..c28aedd7ae1f 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -635,6 +635,9 @@ void __init early_init_fdt_scan_reserved_mem(void)
if (!initial_boot_params)
return;

+ fdt_scan_reserved_mem();
+ fdt_reserve_elfcorehdr();
+
/* Process header /memreserve/ fields */
for (n = 0; ; n++) {
fdt_get_mem_rsv(initial_boot_params, n, &base, &size);
@@ -643,8 +646,6 @@ void __init early_init_fdt_scan_reserved_mem(void)
memblock_reserve(base, size);
}

- fdt_scan_reserved_mem();
- fdt_reserve_elfcorehdr();
fdt_init_reserved_mem();
}

--
2.40.0