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[XEN][PATCH v6 05/19] xen/arm: Add CONFIG_OVERLAY_DTB
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Vikram Garhwal <vikram.garhwal@xxxxxxx>
- Date: Tue, 2 May 2023 16:36:36 -0700
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- Cc: <sstabellini@xxxxxxxxxx>, <vikram.garhwal@xxxxxxx>, <michal.orzel@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, "George Dunlap" <george.dunlap@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Julien Grall" <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Tue, 02 May 2023 23:37:44 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Introduce a config option where the user can enable support for adding/removing
device tree nodes using a device tree binary overlay.
Signed-off-by: Vikram Garhwal <vikram.garhwal@xxxxxxx>
---
SUPPORT.md | 6 ++++++
xen/arch/arm/Kconfig | 5 +++++
2 files changed, 11 insertions(+)
diff --git a/SUPPORT.md b/SUPPORT.md
index aa1940e55f..e40ec4fba2 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -822,6 +822,12 @@ No support for QEMU backends in a 16K or 64K domain.
Status: Supported
+### Device Tree Overlays
+
+Add/Remove device tree nodes using a device tree overlay binary(.dtbo).
+
+ Status, ARM: Experimental
+
### ARM: Guest ACPI support
Status: Supported
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 239d3aed3c..1fe3d698a5 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -53,6 +53,11 @@ config HAS_ITS
bool "GICv3 ITS MSI controller support (UNSUPPORTED)" if UNSUPPORTED
depends on GICV3 && !NEW_VGIC && !ARM_32
+config OVERLAY_DTB
+ bool "DTB overlay support (UNSUPPORTED)" if UNSUPPORTED
+ help
+ Dynamic addition/removal of Xen device tree nodes using a dtbo.
+
config HVM
def_bool y
--
2.17.1
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