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24 lines
709 B
Markdown
24 lines
709 B
Markdown
See [../docs/kernel-patches.md](../docs/kernels.md) for more
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information on kernel builds.
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To build with various debug options enabled, build the kernel with
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`make DEBUG=1`. The options enabled are listed in `kernel_config.debug`.
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This allocates a significant amount of memory on boot and you may need to
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adjust the kernel config on some systems. Specifically:
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```diff
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--- a/alpine/kernel/kernel_config
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+++ b/alpine/kernel/kernel_config
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@@ -415,8 +415,8 @@ CONFIG_DMI=y
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# CONFIG_CALGARY_IOMMU is not set
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CONFIG_SWIOTLB=y
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CONFIG_IOMMU_HELPER=y
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-CONFIG_MAXSMP=y
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-CONFIG_NR_CPUS=8192
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+CONFIG_MAXSMP=n
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+CONFIG_NR_CPUS=8
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# CONFIG_SCHED_SMT is not set
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CONFIG_SCHED_MC=y
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# CONFIG_PREEMPT_NONE is not set
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```
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