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b6fb218cf9
When compiling an MMU kernel without any platform support, e.g.
"MMU=y allnoconfig":
echo CONFIG_MMU=y > allno.config
make KCONFIG_ALLCONFIG=1 allnoconfig
NR_IRQS is zero, causing a build failure:
kernel/irq/irqdesc.c:593:3: error: array index in initializer exceeds array bounds
593 | [0 ... NR_IRQS-1] = {
| ^
kernel/irq/irqdesc.c:593:3: note: (near initialization for ‘irq_desc’)
kernel/irq/irqdesc.c:593:22: warning: excess elements in array initializer
593 | [0 ... NR_IRQS-1] = {
| ^
kernel/irq/irqdesc.c:593:22: note: (near initialization for ‘irq_desc’)
Fix this by setting the default value of NR_IRQS to 8, which is the
mininum number of interrupts on any m68k CPU (the DIP48 variant of the
MC68008 has tied IPL0 and IPL2 together, but that does not impact the
range).
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/71db70dc27b46e5326518cd23cb94fa6bee172fe.1730805216.git.geert@linux-m68k.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.