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7516e7216b
This supports the same 32-bit MMIO-mapped 8250 as the early_printk code. It's not clear why the early_printk code supports this form and only this form; the actual runtime 8250_pci doesn't seem to support it. But having hacked up QEMU to expose such a device, early_printk does work with it, and now so does the kexec debug code. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Brian Gerst <brgerst@gmail.com> Cc: Juergen Gross <jgross@suse.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250326142404.256980-3-dwmw2@infradead.org
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.