* [PATCH 0/2] add notes about license implications of bundled initramfs
@ 2021-09-23 8:34 Daniel Wagenknecht
2021-09-23 8:34 ` [PATCH 1/2] common-tasks: add note " Daniel Wagenknecht
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Daniel Wagenknecht @ 2021-09-23 8:34 UTC (permalink / raw)
To: docs
As discussed on IRC the license implications of using
INITRAMFS_IMAGE_BUNDLE are not necessarily obvious. This patchseries
adds notes about them in the relevant places.
Source of this interpretation of the license implications is the second
paragraph of
https://www.kernel.org/doc/html/latest/filesystems/ramfs-rootfs-initramfs.html#external-initramfs-images
I placed them where I saw fit, although this leads to multiple `note`
blocks in direct succession. If this should be avoided a more thorough
rewrite of those sections might be necessary.
Daniel Wagenknecht (2):
common-tasks: add note about license implications of bundled initramfs
ref-manual: add note about license implications of bundled initramfs
documentation/dev-manual/common-tasks.rst | 6 ++++++
documentation/ref-manual/variables.rst | 6 ++++++
2 files changed, 12 insertions(+)
--
2.25.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 1/2] common-tasks: add note about license implications of bundled initramfs
2021-09-23 8:34 [PATCH 0/2] add notes about license implications of bundled initramfs Daniel Wagenknecht
@ 2021-09-23 8:34 ` Daniel Wagenknecht
2021-09-23 8:34 ` [PATCH 2/2] ref-manual: " Daniel Wagenknecht
2021-10-01 17:29 ` [docs] [PATCH 0/2] add notes " Michael Opdenacker
2 siblings, 0 replies; 4+ messages in thread
From: Daniel Wagenknecht @ 2021-09-23 8:34 UTC (permalink / raw)
To: docs
Ensure users are aware that usage of INITRAMFS_IMAGE_BUNDLE is only
appropiate for use with GPLv2 compatible software.
Signed-off-by: Daniel Wagenknecht <dwagenknecht@emlix.com>
---
documentation/dev-manual/common-tasks.rst | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/documentation/dev-manual/common-tasks.rst b/documentation/dev-manual/common-tasks.rst
index bd8bbecb3..b81f51bf8 100644
--- a/documentation/dev-manual/common-tasks.rst
+++ b/documentation/dev-manual/common-tasks.rst
@@ -3886,6 +3886,12 @@ Follow these steps to create an initramfs image:
variable, allowing the initramfs image to be built into the kernel
normally.
+ .. note::
+
+ Bundling the initramfs with the kernel conflates the code in the initramfs
+ with the GPLv2 licensed Linux kernel binary. Thus only GPLv2 compatible
+ software may be part of a bundled initramfs.
+
.. note::
If you choose to not bundle the initramfs image with the kernel
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 2/2] ref-manual: add note about license implications of bundled initramfs
2021-09-23 8:34 [PATCH 0/2] add notes about license implications of bundled initramfs Daniel Wagenknecht
2021-09-23 8:34 ` [PATCH 1/2] common-tasks: add note " Daniel Wagenknecht
@ 2021-09-23 8:34 ` Daniel Wagenknecht
2021-10-01 17:29 ` [docs] [PATCH 0/2] add notes " Michael Opdenacker
2 siblings, 0 replies; 4+ messages in thread
From: Daniel Wagenknecht @ 2021-09-23 8:34 UTC (permalink / raw)
To: docs
Ensure users are aware that usage of INITRAMFS_IMAGE_BUNDLE is only
appropiate for use with GPLv2 compatible software.
Signed-off-by: Daniel Wagenknecht <dwagenknecht@emlix.com>
---
documentation/ref-manual/variables.rst | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index 28eb5f233..4496e2f46 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -3587,6 +3587,12 @@ system and gives an overview of their function and contents.
:term:`CONFIG_INITRAMFS_SOURCE` kernel
feature.
+ .. note::
+
+ Bundling the initramfs with the kernel conflates the code in the
+ initramfs with the GPLv2 licensed Linux kernel binary. Thus only GPLv2
+ compatible software may be part of a bundled initramfs.
+
.. note::
Using an extra compilation pass to bundle the initramfs avoids a
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [docs] [PATCH 0/2] add notes about license implications of bundled initramfs
2021-09-23 8:34 [PATCH 0/2] add notes about license implications of bundled initramfs Daniel Wagenknecht
2021-09-23 8:34 ` [PATCH 1/2] common-tasks: add note " Daniel Wagenknecht
2021-09-23 8:34 ` [PATCH 2/2] ref-manual: " Daniel Wagenknecht
@ 2021-10-01 17:29 ` Michael Opdenacker
2 siblings, 0 replies; 4+ messages in thread
From: Michael Opdenacker @ 2021-10-01 17:29 UTC (permalink / raw)
To: Daniel Wagenknecht, docs
Hi Daniel,
Many thanks for the patches!
On 9/23/21 10:34 AM, Daniel Wagenknecht wrote:
> As discussed on IRC the license implications of using
> INITRAMFS_IMAGE_BUNDLE are not necessarily obvious. This patchseries
> adds notes about them in the relevant places.
>
> Source of this interpretation of the license implications is the second
> paragraph of
> https://www.kernel.org/doc/html/latest/filesystems/ramfs-rootfs-initramfs.html#external-initramfs-images
I agree. Good to point this out.
>
> I placed them where I saw fit, although this leads to multiple `note`
> blocks in direct succession. If this should be avoided a more thorough
> rewrite of those sections might be necessary.
Right. We might find a way to improve this later, but merging your
changes is important too.
Reviewed-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Merged into master-next.
Thanks again,
Cheers,
Michael
--
Michael Opdenacker, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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