8ef0ed95ee
Now that we have equivalent earlycon support, arm64's earlyprintk code can be removed. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
31 lines
906 B
Text
31 lines
906 B
Text
menu "Kernel hacking"
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source "lib/Kconfig.debug"
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config FRAME_POINTER
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bool
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default y
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config STRICT_DEVMEM
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bool "Filter access to /dev/mem"
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depends on MMU
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help
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If this option is disabled, you allow userspace (root) access to all
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of memory, including kernel and userspace memory. Accidental
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access to this is obviously disastrous, but specific access can
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be used by people debugging the kernel.
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If this option is switched on, the /dev/mem file only allows
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userspace access to memory mapped peripherals.
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If in doubt, say Y.
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config PID_IN_CONTEXTIDR
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bool "Write the current PID to the CONTEXTIDR register"
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help
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Enabling this option causes the kernel to write the current PID to
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the CONTEXTIDR register, at the expense of some additional
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instructions during context switch. Say Y here only if you are
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planning to use hardware trace tools with this kernel.
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endmenu
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