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From: Vikram Garhwal <vikram.garhwal@amd.com>
To: <xen-devel@lists.xenproject.org>
Cc: <michal.orzel@amd.com>, <sstabellini@kernel.org>,
	<vikram.garhwal@amd.com>, <jbeulich@suse.com>,
	Henry Wang <Henry.Wang@arm.com>,
	Community Manager <community.manager@xenproject.org>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	George Dunlap <george.dunlap@citrix.com>,
	Julien Grall <julien@xen.org>, Wei Liu <wl@xen.org>,
	Bertrand Marquis <bertrand.marquis@arm.com>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: [XEN][PATCH v7 05/19] xen/arm: Add CONFIG_OVERLAY_DTB
Date: Thu, 1 Jun 2023 17:48:10 -0700	[thread overview]
Message-ID: <20230602004824.20731-6-vikram.garhwal@amd.com> (raw)
In-Reply-To: <20230602004824.20731-1-vikram.garhwal@amd.com>

Introduce a config option where the user can enable support for adding/removing
device tree nodes using a device tree binary overlay.

Update SUPPORT.md and CHANGELOG.md to state the Device Tree Overlays support for
Arm.

Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>

---
Changes from v6:
    Add CHANGELOG and SUPPORT.md entries.
---
 CHANGELOG.md         | 2 ++
 SUPPORT.md           | 6 ++++++
 xen/arch/arm/Kconfig | 5 +++++
 3 files changed, 13 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5bfd3aa5c0..a137fce576 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
    - Bus-lock detection, used by Xen to mitigate (by rate-limiting) the system
      wide impact of a guest misusing atomic instructions.
  - xl/libxl can customize SMBIOS strings for HVM guests.
+ - On Arm, support for dynamic addition/removal of Xen device tree nodes using
+   a device tree overlay binary(.dtbo).
 
 ## [4.17.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.17.0) - 2022-12-12
 
diff --git a/SUPPORT.md b/SUPPORT.md
index 6dbed9d5d0..6b27d43cc6 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -832,6 +832,12 @@ 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



  parent reply	other threads:[~2023-06-02  0:49 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-02  0:48 [XEN][PATCH v7 00/19] dynamic node programming using overlay dtbo Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 01/19] common/device_tree: handle memory allocation failure in __unflatten_device_tree() Vikram Garhwal
2023-06-02  7:09   ` Michal Orzel
2023-06-05 18:54   ` Julien Grall
2023-06-02  0:48 ` [XEN][PATCH v7 02/19] common/device_tree.c: unflatten_device_tree() propagate errors Vikram Garhwal
2023-06-02  7:14   ` Michal Orzel
2023-06-06 19:08     ` Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 03/19] xen/arm/device: Remove __init from function type Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 04/19] common/device_tree: change __unflatten_device_tree() type Vikram Garhwal
2023-06-02  7:15   ` Michal Orzel
2023-06-05 19:04   ` Julien Grall
2023-06-06 19:09     ` Vikram Garhwal
2023-08-16 23:49       ` Vikram Garhwal
2023-08-17  7:59         ` Julien Grall
2023-06-02  0:48 ` Vikram Garhwal [this message]
2023-06-02  1:43   ` [XEN][PATCH v7 05/19] xen/arm: Add CONFIG_OVERLAY_DTB Henry Wang
2023-06-02  7:16   ` Michal Orzel
2023-06-02  9:06   ` Jan Beulich
2023-06-02  9:22     ` Henry Wang
2023-06-06 19:11       ` Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 06/19] libfdt: Keep fdt functions after init for CONFIG_OVERLAY_DTB Vikram Garhwal
2023-06-02  9:09   ` Jan Beulich
2023-06-02  0:48 ` [XEN][PATCH v7 07/19] libfdt: overlay: change overlay_get_target() Vikram Garhwal
2023-06-05 19:05   ` Julien Grall
2023-06-02  0:48 ` [XEN][PATCH v7 08/19] xen/device-tree: Add device_tree_find_node_by_path() to find nodes in device tree Vikram Garhwal
2023-06-02  1:52   ` Henry Wang
2023-06-02  7:24     ` Michal Orzel
2023-06-05 19:12   ` Julien Grall
2023-06-06 20:29     ` Vikram Garhwal
2023-06-07  6:22       ` Michal Orzel
2023-06-07  6:27         ` Henry Wang
2023-06-07  8:30       ` Luca Fancellu
2023-06-02  0:48 ` [XEN][PATCH v7 09/19] xen/iommu: Move spin_lock from iommu_dt_device_is_assigned to caller Vikram Garhwal
2023-06-02  7:45   ` Michal Orzel
2023-06-05 19:22     ` Julien Grall
2023-06-06 20:33       ` Vikram Garhwal
2023-06-02  9:19   ` Jan Beulich
2023-06-02  9:26     ` Jan Beulich
2023-06-05 19:19   ` Julien Grall
2023-08-16 23:55     ` Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 10/19] xen/iommu: protect iommu_add_dt_device() with dtdevs_lock Vikram Garhwal
2023-06-02  9:21   ` Jan Beulich
2023-06-05 19:25   ` Julien Grall
2023-06-02  0:48 ` [XEN][PATCH v7 11/19] xen/iommu: Introduce iommu_remove_dt_device() Vikram Garhwal
2023-06-02  9:22   ` Jan Beulich
2023-06-05 19:37   ` Julien Grall
2023-08-16 23:58     ` Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 12/19] xen/smmu: Add remove_device callback for smmu_iommu ops Vikram Garhwal
2023-06-02  7:47   ` Michal Orzel
2023-06-02  0:48 ` [XEN][PATCH v7 13/19] asm/smp.h: Fix circular dependency for device_tree.h and rwlock.h Vikram Garhwal
2023-06-05 19:46   ` Julien Grall
2023-06-02  0:48 ` [XEN][PATCH v7 14/19] common/device_tree: Add rwlock for dt_host Vikram Garhwal
2023-06-02  1:58   ` Henry Wang
2023-06-05  7:10   ` Michal Orzel
2023-06-05 19:52   ` Julien Grall
2023-08-16 23:59     ` Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 15/19] xen/arm: Implement device tree node removal functionalities Vikram Garhwal
2023-06-02  9:31   ` Jan Beulich
2023-06-05  7:52   ` Michal Orzel
2023-06-05 21:07   ` Julien Grall
2023-08-17  0:31     ` Vikram Garhwal
2023-08-17  8:14       ` Julien Grall
2023-06-02  0:48 ` [XEN][PATCH v7 16/19] xen/arm: Implement device tree node addition functionalities Vikram Garhwal
2023-06-05  8:35   ` Michal Orzel
2023-06-02  0:48 ` [XEN][PATCH v7 17/19] tools/libs/ctrl: Implement new xc interfaces for dt overlay Vikram Garhwal
2023-06-12 11:17   ` Anthony PERARD
2023-06-02  0:48 ` [XEN][PATCH v7 18/19] tools/libs/light: Implement new libxl functions for device tree overlay ops Vikram Garhwal
2023-06-02  0:48 ` [XEN][PATCH v7 19/19] tools/xl: Add new xl command overlay for device tree overlay support Vikram Garhwal

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