Loading arch/arm64/Kconfig +2 −0 Original line number Diff line number Diff line Loading @@ -351,3 +351,5 @@ source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig" source "arch/arm64/mm/Kconfig" arch/arm64/mm/Kconfig 0 → 100644 +10 −0 Original line number Diff line number Diff line config STRICT_MEMORY_RWX bool "restrict kernel memory permissions as much as possible" help If this is set, kernel text will be made RX, kernel data and stack RW, rodata R (otherwise all of the kernel 1-to-1 mapping is made RWX). The tradeoff is that several sections are padded to 2M boundaries (because their permissions are different and splitting the 2M pages into 4K ones causes TLB performance problems), wasting memory. Loading
arch/arm64/Kconfig +2 −0 Original line number Diff line number Diff line Loading @@ -351,3 +351,5 @@ source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig" source "arch/arm64/mm/Kconfig"
arch/arm64/mm/Kconfig 0 → 100644 +10 −0 Original line number Diff line number Diff line config STRICT_MEMORY_RWX bool "restrict kernel memory permissions as much as possible" help If this is set, kernel text will be made RX, kernel data and stack RW, rodata R (otherwise all of the kernel 1-to-1 mapping is made RWX). The tradeoff is that several sections are padded to 2M boundaries (because their permissions are different and splitting the 2M pages into 4K ones causes TLB performance problems), wasting memory.
