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In order to enable this config option, a Kconfig entry is necessary. Change-Id: I0013db0a98f016777809b6a88bd0a17b46d59f9d Signed-off-by: Larry Bassel <lbassel@codeaurora.org>
11 lines
450 B
Plaintext
11 lines
450 B
Plaintext
config STRICT_MEMORY_RWX
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bool "restrict kernel memory permissions as much as possible"
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help
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If this is set, kernel text will be made RX, kernel data and stack
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RW, rodata R (otherwise all of the kernel 1-to-1 mapping is
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made RWX).
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The tradeoff is that several sections are padded to
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2M boundaries (because their permissions are different and
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splitting the 2M pages into 4K ones causes TLB performance
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problems), wasting memory.
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