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[PATCH v2] xen/arm: Use FDT_MAGIC from libfdt instead of local macro
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Dmytro Prokopchuk1 <dmytro_prokopchuk1@xxxxxxxx>
- Date: Wed, 12 Nov 2025 09:50:25 +0000
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- Cc: Dmytro Prokopchuk1 <dmytro_prokopchuk1@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Wed, 12 Nov 2025 09:50:38 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHcU7nF1Zr/ErjEH0+gSpDahlo6Lw==
- Thread-topic: [PATCH v2] xen/arm: Use FDT_MAGIC from libfdt instead of local macro
Remove the redundant local 'DTB_MAGIC' definition and replace its usage
with the canonical 'FDT_MAGIC' from 'libfdt'.
Amends: 66edeb2e3972 (arm: copy DTB appended to zImage)
Signed-off-by: Dmytro Prokopchuk <dmytro_prokopchuk1@xxxxxxxx>
---
Changes in v2:
- "Fixes" tag was replaced with "Amends"
Link to v1:
https://patchew.org/Xen/464fb509cc7f66934689d9e2d3a77bf5fcd45c24.1762931200.git.dmytro._5Fprokopchuk1@xxxxxxxx/
---
xen/arch/arm/kernel.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c
index 48f4b56d0c..7544fd50a2 100644
--- a/xen/arch/arm/kernel.c
+++ b/xen/arch/arm/kernel.c
@@ -40,8 +40,6 @@ struct minimal_dtb_header {
/* There are other fields but we don't use them yet. */
};
-#define DTB_MAGIC 0xd00dfeedU
-
static void __init place_modules(struct kernel_info *info,
paddr_t kernbase, paddr_t kernend)
{
@@ -383,7 +381,7 @@ static int __init kernel_zimage32_probe(struct kernel_info
*info,
if ( addr + end - start + sizeof(dtb_hdr) <= size )
{
copy_from_paddr(&dtb_hdr, addr + end - start, sizeof(dtb_hdr));
- if (be32_to_cpu(dtb_hdr.magic) == DTB_MAGIC) {
+ if (be32_to_cpu(dtb_hdr.magic) == FDT_MAGIC) {
end += be32_to_cpu(dtb_hdr.total_size);
if ( end > addr + size )
--
2.43.0
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