Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

[mirror_ubuntu-bionic-kernel.git] / arch / arm / Kconfig

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 8ac460a8f4ca64dfd33238af132775bac1a6d6dd..e40eefb5d32d805c0d8ed5f6d212a754a515fe76 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -16,6 +16,7 @@ config ARM
        select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
        select HAVE_ARCH_KGDB
        select HAVE_ARCH_TRACEHOOK
+       select HAVE_SYSCALL_TRACEPOINTS
        select HAVE_KPROBES if !XIP_KERNEL
        select HAVE_KRETPROBES if (HAVE_KPROBES)
        select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
@@ -24,6 +25,7 @@ config ARM
        select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
        select ARCH_BINFMT_ELF_RANDOMIZE_PIE
        select HAVE_GENERIC_DMA_COHERENT
+       select HAVE_DEBUG_KMEMLEAK
        select HAVE_KERNEL_GZIP
        select HAVE_KERNEL_LZO
        select HAVE_KERNEL_LZMA
@@ -38,6 +40,7 @@ config ARM
        select HARDIRQS_SW_RESEND
        select GENERIC_IRQ_PROBE
        select GENERIC_IRQ_SHOW
+       select HAVE_UID16
        select ARCH_WANT_IPC_PARSE_VERSION
        select HARDIRQS_SW_RESEND
        select CPU_PM if (SUSPEND || CPU_IDLE)
@@ -49,6 +52,7 @@ config ARM
        select GENERIC_STRNCPY_FROM_USER
        select GENERIC_STRNLEN_USER
        select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN
+       select GENERIC_KERNEL_THREAD
        help
          The ARM series is a line of low-power-consumption RISC chip designs
          licensed by ARM Ltd and targeted at embedded applications and
@@ -1402,6 +1406,16 @@ config PL310_ERRATA_769419
          on systems with an outer cache, the store buffer is drained
          explicitly.
 
+config ARM_ERRATA_775420
+       bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
+       depends on CPU_V7
+       help
+        This option enables the workaround for the 775420 Cortex-A9 (r2p2,
+        r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
+        operation aborts with MMU exception, it might cause the processor
+        to deadlock. This workaround puts DSB before executing ISB if
+        an abort may occur on cache maintenance.
+
 endmenu
 
 source "arch/arm/common/Kconfig"
@@ -1786,8 +1800,8 @@ config ALIGNMENT_TRAP
          configuration it is safe to say N, otherwise say Y.
 
 config UACCESS_WITH_MEMCPY
-       bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
-       depends on MMU && EXPERIMENTAL
+       bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
+       depends on MMU
        default y if CPU_FEROCEON
        help
          Implement faster copy_to_user and clear_user methods for CPU
@@ -1828,12 +1842,6 @@ config CC_STACKPROTECTOR
          neutralized via a kernel panic.
          This feature requires gcc version 4.2 or above.
 
-config DEPRECATED_PARAM_STRUCT
-       bool "Provide old way to pass kernel parameters"
-       help
-         This was deprecated in 2001 and announced to live on for 5 years.
-         Some old boot loaders still use this way.
-
 config XEN_DOM0
        def_bool y
        depends on XEN
@@ -1856,6 +1864,23 @@ config USE_OF
        help
          Include support for flattened device tree machine descriptions.
 
+config ATAGS
+       bool "Support for the traditional ATAGS boot data passing" if USE_OF
+       default y
+       help
+         This is the traditional way of passing data to the kernel at boot
+         time. If you are solely relying on the flattened device tree (or
+         the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
+         to remove ATAGS support from your kernel binary.  If unsure,
+         leave this to y.
+
+config DEPRECATED_PARAM_STRUCT
+       bool "Provide old way to pass kernel parameters"
+       depends on ATAGS
+       help
+         This was deprecated in 2001 and announced to live on for 5 years.
+         Some old boot loaders still use this way.
+
 # Compressed boot loader in ROM.  Yes, we really want to ask about
 # TEXT and BSS so we preserve their values in the config files.
 config ZBOOT_ROM_TEXT
@@ -1982,6 +2007,7 @@ config CMDLINE
 choice
        prompt "Kernel command line type" if CMDLINE != ""
        default CMDLINE_FROM_BOOTLOADER
+       depends on ATAGS
 
 config CMDLINE_FROM_BOOTLOADER
        bool "Use bootloader kernel arguments if available"
@@ -2051,7 +2077,7 @@ config KEXEC
 
 config ATAGS_PROC
        bool "Export atags in procfs"
-       depends on KEXEC
+       depends on ATAGS && KEXEC
        default y
        help
          Should the atags used to boot the kernel be exported in an "atags"