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docs: More updates to the kernel README

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Signed-off-by: Anil Madhavapeddy <anil@docker.com>
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Anil Madhavapeddy 2017-03-15 17:26:47 +00:00
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kernel/README.md
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@ -2,14 +2,17 @@ Linux kernel builds, based on mostly-vanilla upstream Linux kernels.
See [../docs/kernel-patches.md] for how the local patches in `patches-*`
are maintained.
The build is mostly silent. A local build can be run via `make tag`. To view
The build is mostly silent. A local build can be run via `make`. To view
the output use `docker log -f <containerid>`. The build creates multiple
containers, so multiple invocations may be necessary. To view the full build
output one may also invoke `docker build .` and then copy the build artefacts
from the image afterwards.
To build with various debug options enabled, build the kernel with
`make DEBUG=1`. The options enabled are listed in `kernel_config.debug`. This allocates a significant amount of memory on boot and you may need to adjust the kernel config on some systems. Specifically:
`make DEBUG=1`. The options enabled are listed in `kernel_config.debug`.
This allocates a significant amount of memory on boot and you may need to
adjust the kernel config on some systems. Specifically:
```diff
--- a/alpine/kernel/kernel_config
+++ b/alpine/kernel/kernel_config