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Currently the Kconfig fragments in kernel/configs and arch/*/configs
that aren't used internally aren't discoverable through "make help",
which consists of hard-coded lists of config fragments. Instead, list
all the fragment targets that have a "# Help: " comment prefix so the
targets can be generated dynamically.
Add logic to the Makefile to search for and display the fragment and
comment. Add comments to fragments that are intended to be direct targets.
Signed-off-by: Kees Cook <keescook@chromium.org>
Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
After disabling platform support there's still some more pruning we can
do to the virtconfig size, there are a number of drivers and subsystems
which are not likely to be useful on mach-virt and so can be disabled in
order to further improve build times. Let's do so, noting that having PCI
device assignment means that PCI devices might potentially appear.
This is just an initial manual passthrough, there will be further savings
available especially if we take a much more focused approach.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230221-arm64-virtconfig-slim-v1-1-604b64be7ec3@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Provide a slimline configuration intended to be booted on virtual
machines, with the goal of providing a light configuration which will
boot on and enable features available in mach-virt. This is defined in
terms of the standard defconfig, with an additional virt.config fragment
which disables options unneeded in a virtual configuration.
As a first step we just disable all the ARCH_ configuration options,
disabling the build of all the SoC specific drivers. This results in a
kernel that builds about 25% faster in my testing, if this approach
works for people we can add further options.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230203-arm64-defconfigs-v1-3-cd0694a05f13@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
