X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=config%2FConfig-kernel.in;h=4c43190e40df5e9df12f83857bdb41250e700006;hb=4211eab085ba38be024dc27731ee8135a671a8e8;hp=a770a9d797371dd128fab7cfb4aa7430aebb6bd3;hpb=ce8c639a6c539534be14a540e7c3e9933d3a34ef;p=openwrt%2Fstaging%2Fjow.git

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index a770a9d797..4c43190e40 100644
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -47,6 +47,7 @@ config KERNEL_MIPS_FP_SUPPORT
 
 config KERNEL_ARM_PMU
 	bool
+	default y if TARGET_armsr_armv8
 	depends on (arm || aarch64)
 
 config KERNEL_X86_VSYSCALL_EMULATION
@@ -184,16 +185,73 @@ config KERNEL_KASAN_VMALLOC
 	  will have no effect.
 
 if KERNEL_KASAN
-	config KERNEL_KASAN_GENERIC
-	def_bool y
+choice
+	prompt "KASAN mode"
+	depends on KERNEL_KASAN
+	default KERNEL_KASAN_GENERIC
+	help
+	  KASAN has three modes:
+
+	  1. Generic KASAN (supported by many architectures, enabled with
+	     CONFIG_KASAN_GENERIC, similar to userspace ASan),
+	  2. Software Tag-Based KASAN (arm64 only, based on software memory
+	     tagging, enabled with CONFIG_KASAN_SW_TAGS, similar to userspace
+	     HWASan), and
+	  3. Hardware Tag-Based KASAN (arm64 only, based on hardware memory
+	     tagging, enabled with CONFIG_KASAN_HW_TAGS).
+
+config KERNEL_KASAN_GENERIC
+	bool "Generic KASAN"
+	select KERNEL_SLUB_DEBUG
+	help
+	  Enables Generic KASAN.
+
+	  Consumes about 1/8th of available memory at kernel start and adds an
+	  overhead of ~50% for dynamic allocations.
+	  The performance slowdown is ~x3.
+
+config KERNEL_KASAN_SW_TAGS
+	bool "Software Tag-Based KASAN"
+	depends on aarch64
+	select KERNEL_SLUB_DEBUG
+	help
+	  Enables Software Tag-Based KASAN.
+
+	  Supported only on arm64 CPUs and relies on Top Byte Ignore.
+
+	  Consumes about 1/16th of available memory at kernel start and
+	  add an overhead of ~20% for dynamic allocations.
+
+	  May potentially introduce problems related to pointer casting and
+	  comparison, as it embeds a tag into the top byte of each pointer.
+
+config KERNEL_KASAN_HW_TAGS
+	bool "Hardware Tag-Based KASAN"
+	depends on aarch64
+	select KERNEL_SLUB_DEBUG
+	select KERNEL_ARM64_MTE
+	help
+	  Enables Hardware Tag-Based KASAN.
+
+	  Supported only on arm64 CPUs starting from ARMv8.5 and relies on
+	  Memory Tagging Extension and Top Byte Ignore.
+
+	  Consumes about 1/32nd of available memory.
+
+	  May potentially introduce problems related to pointer casting and
+	  comparison, as it embeds a tag into the top byte of each pointer.
+
+endchoice
+
+	config KERNEL_ARM64_MTE
+		def_bool n
 
-	config KERNEL_KASAN_SW_TAGS
-	def_bool n
 endif
 
 choice
 	prompt "Instrumentation type"
 	depends on KERNEL_KASAN
+	depends on !KERNEL_KASAN_HW_TAGS
 	default KERNEL_KASAN_OUTLINE
 
 config KERNEL_KASAN_OUTLINE
@@ -624,10 +682,23 @@ config KERNEL_PRINTK_TIME
 	default y
 
 config KERNEL_SLUB_DEBUG
-	bool
+	bool "Enable SLUB debugging support"
+	help
+	  This enables various debugging features:
+	    - Accepts "slub_debug" kernel parameter
+	    - Provides caches debugging options (e.g. tracing, validating)
+	    - Adds /sys/kernel/slab/ attrs for reading amounts of *objects*
+	    - Enables /proc/slabinfo support
+	    - Prints info when running out of memory
+
+	  Enabling this can result in a significant increase of code size.
 
 config KERNEL_SLUB_DEBUG_ON
-	bool
+	depends on KERNEL_SLUB_DEBUG
+	bool "Boot kernel with basic caches debugging enabled"
+	help
+	  This enables by default sanity_checks, red_zone, poison and store_user
+	  debugging options for all caches.
 
 config KERNEL_SLABINFO
 	select KERNEL_SLUB_DEBUG
@@ -1107,6 +1178,12 @@ config KERNEL_NET_L3_MASTER_DEV
 	  This module provides glue between core networking code and device
 	  drivers to support L3 master devices like VRF.
 
+config KERNEL_XDP_SOCKETS
+	bool "XDP sockets support"
+	help
+	  XDP sockets allows a channel between XDP programs and
+	  userspace applications.
+
 config KERNEL_WIRELESS_EXT
 	def_bool n