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[1/2] fdt: Properly handle "no-map" field in the memory region

Message ID 20210115114544.1830068-2-qperret@google.com
State New
Headers show
Series fdt: A couple of no-map fixes | expand

Commit Message

Quentin Perret Jan. 15, 2021, 11:45 a.m. UTC 
From: KarimAllah Ahmed <karahmed@amazon.de>

Mark the memory region with NOMAP flag instead of completely removing it
from the memory blocks. That makes the FDT handling consistent with the EFI
memory map handling.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: Quentin Perret <qperret@google.com>
---
 drivers/of/fdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index feb0f2d67fc5..427b534d60d2 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1147,7 +1147,7 @@  int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
 					phys_addr_t size, bool nomap)
 {
 	if (nomap)
-		return memblock_remove(base, size);
+		return memblock_mark_nomap(base, size);
 	return memblock_reserve(base, size);
 }