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85de0090bd
Currently, the FDT folio is preserved inside __kho_finalize(). If the user performs multiple finalize/abort cycles, kho_preserve_folio() is called repeatedly for the same FDT folio. Since the FDT folio is allocated once during kho_init(), it should be marked for preservation at the same time. Move the preservation call to kho_init() to align the preservation state with the object's lifecycle and simplify the finalize path. Also, pre-zero the FDT tree so we do not expose random bits to the user and to the next kernel by using the new kho_alloc_preserve() api. Link: https://lkml.kernel.org/r/20251114190002.3311679-5-pasha.tatashin@soleen.com Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Pratyush Yadav <pratyush@kernel.org> Cc: Alexander Graf <graf@amazon.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Baoquan He <bhe@redhat.com> Cc: Coiby Xu <coxu@redhat.com> Cc: Dave Vasilevsky <dave@vasilevsky.ca> Cc: Eric Biggers <ebiggers@google.com> Cc: Kees Cook <kees@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.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 reStructuredText 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.