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| Filename | Latest commit message | Latest commit date |
|---|---|---|
147e3743cf
[ Upstream commit ca05f33316559a04867295dd49f85aeedbfd6bfd ]
The reserved-memory overlap detection code fails to detect overlaps if
either of the regions starts at address 0x0. The code explicitly checks
for and ignores such regions, apparently in order to ignore dynamically
allocated regions which have an address of 0x0 at this point. These
dynamically allocated regions also have a size of 0x0 at this point, so
fix this by removing the check and sorting the dynamically allocated
regions ahead of any static regions at address 0x0.
For example, there are two overlaps in this case but they are not
currently reported:
foo@0 {
reg = <0x0 0x2000>;
};
bar@0 {
reg = <0x0 0x1000>;
};
baz@1000 {
reg = <0x1000 0x1000>;
};
quux {
size = <0x1000>;
};
but they are after this patch:
OF: reserved mem: OVERLAP DETECTED!
bar@0 (0x00000000--0x00001000) overlaps with foo@0 (0x00000000--0x00002000)
OF: reserved mem: OVERLAP DETECTED!
foo@0 (0x00000000--0x00002000) overlaps with baz@1000 (0x00001000--0x00002000)
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/ded6fd6b47b58741aabdcc6967f73eca6a3f311e.1603273666.git-series.vincent.whitchurch@axis.com
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.