diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-04-21 16:12:12 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-10-11 18:15:51 +0100 |
| commit | a636403b8228526061a73a46b2a89e2ce8f683e3 (patch) | |
| tree | 21d71ee15222a9c7396fe4f6f81c8195ac547116 | |
| parent | 347a5fe62d1a50ed597ae4da59676488053c1898 (diff) | |
arm64: text replication: add Kconfig
Add the Kconfig symbol for kernel text replication. This unfortunately
requires KASAN and kernel text randomisation options to be disabled at
the moment.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
| -rw-r--r-- | arch/arm64/Kconfig | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index a2511b30d0f6..43b0af01ff04 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -160,7 +160,7 @@ config ARM64 select HAVE_ARCH_HUGE_VMAP select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE - select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48) + select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48 && !REPLICATE_KTEXT) select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN select HAVE_ARCH_KASAN_HW_TAGS if (HAVE_ARCH_KASAN && ARM64_MTE) @@ -1428,6 +1428,13 @@ config NODES_SHIFT Specify the maximum number of NUMA Nodes available on the target system. Increases memory reserved to accommodate various tables. +config REPLICATE_KTEXT + bool "Replicate kernel text across numa nodes" + depends on NUMA + help + Say Y here to enable replicating the kernel text across multiple + nodes in a NUMA cluster. This trades memory for speed. + source "kernel/Kconfig.hz" config ARCH_SPARSEMEM_ENABLE @@ -2175,6 +2182,7 @@ config RELOCATABLE config RANDOMIZE_BASE bool "Randomize the address of the kernel image" + depends on !REPLICATE_KTEXT select RELOCATABLE help Randomizes the virtual address at which the kernel image is |