kernel: Remove CONFIG_COMPAT

This removes support for executing old 32 bit applications on 64 bit ARM
and MIPS kernels.
On OpenWrt we normally compile all the user space applications on our
own and do not support third party binary only modules especial not 32
bit applications on 64 bit CPUs.

This reduces the attack surface on such systems and should also save
some memory.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

2 files changed, 0 insertions, 13 deletions

diff --git a/target/linux/octeon/config-4.14 b/target/linux/octeon/config-4.14
index 0546a6fb29..6393c728f3 100644
--- a/target/linux/octeon/config-4.14
+++ b/target/linux/octeon/config-4.14
@@ -14,7 +14,6 @@ CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
 CONFIG_ARCH_MMAP_RND_BITS=12
 CONFIG_ARCH_MMAP_RND_BITS_MAX=18
 CONFIG_ARCH_MMAP_RND_BITS_MIN=12
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
 CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
 # CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set
 # CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set
@@ -34,7 +33,6 @@ CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_BLK_MQ_PCI=y
 CONFIG_BLK_SCSI_REQUEST=y
-CONFIG_BLOCK_COMPAT=y
 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
 CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
 CONFIG_BUILTIN_DTB=y
@@ -49,8 +47,6 @@ CONFIG_CAVIUM_OCTEON_LOCK_L2_TLB=y
 CONFIG_CAVIUM_OCTEON_SOC=y
 CONFIG_CEVT_R4K=y
 CONFIG_CLONE_BACKWARDS=y
-CONFIG_COMPAT=y
-CONFIG_COMPAT_NETLINK_MESSAGES=y
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_CPU_CAVIUM_OCTEON=y
 CONFIG_CPU_GENERIC_DUMP_TLB=y
@@ -125,7 +121,6 @@ CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y
 # CONFIG_HAVE_ARCH_BITREVERSE is not set
 CONFIG_HAVE_ARCH_JUMP_LABEL=y
 CONFIG_HAVE_ARCH_KGDB=y
-CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
 CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
 CONFIG_HAVE_ARCH_TRACEHOOK=y
 CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
@@ -276,7 +271,6 @@ CONFIG_SWPHY=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y
 CONFIG_SYSFS_DEPRECATED=y
 CONFIG_SYSFS_DEPRECATED_V2=y
-CONFIG_SYSVIPC_COMPAT=y
 CONFIG_SYS_HAS_CPU_CAVIUM_OCTEON=y
 CONFIG_SYS_HAS_EARLY_PRINTK=y
 CONFIG_SYS_SUPPORTS_64BIT_KERNEL=y
diff --git a/target/linux/octeon/config-4.19 b/target/linux/octeon/config-4.19
index 8bb1dcef18..521dd55de6 100644
--- a/target/linux/octeon/config-4.19
+++ b/target/linux/octeon/config-4.19
@@ -8,7 +8,6 @@ CONFIG_ARCH_HAS_PHYS_TO_DMA=y
 CONFIG_ARCH_MMAP_RND_BITS=12
 CONFIG_ARCH_MMAP_RND_BITS_MAX=18
 CONFIG_ARCH_MMAP_RND_BITS_MIN=12
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
 CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
 CONFIG_ARCH_SPARSEMEM_ENABLE=y
 CONFIG_ARCH_SUPPORTS_UPROBES=y
@@ -24,7 +23,6 @@ CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_BLK_MQ_PCI=y
 CONFIG_BLK_SCSI_REQUEST=y
-CONFIG_BLOCK_COMPAT=y
 CONFIG_BUILTIN_DTB=y
 # CONFIG_CAVIUM_CN63XXP1 is not set
 CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE=2
@@ -37,9 +35,6 @@ CONFIG_CAVIUM_OCTEON_LOCK_L2_TLB=y
 CONFIG_CAVIUM_OCTEON_SOC=y
 CONFIG_CEVT_R4K=y
 CONFIG_CLONE_BACKWARDS=y
-CONFIG_COMPAT=y
-CONFIG_COMPAT_32BIT_TIME=y
-CONFIG_COMPAT_NETLINK_MESSAGES=y
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_CPU_CAVIUM_OCTEON=y
 CONFIG_CPU_GENERIC_DUMP_TLB=y
@@ -114,7 +109,6 @@ CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y
 CONFIG_HAVE_ARCH_COMPILER_H=y
 CONFIG_HAVE_ARCH_JUMP_LABEL=y
 CONFIG_HAVE_ARCH_KGDB=y
-CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
 CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
 CONFIG_HAVE_ARCH_TRACEHOOK=y
 CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
@@ -245,7 +239,6 @@ CONFIG_SRCU=y
 CONFIG_SWIOTLB=y
 CONFIG_SWPHY=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y
-CONFIG_SYSVIPC_COMPAT=y
 CONFIG_SYS_HAS_CPU_CAVIUM_OCTEON=y
 CONFIG_SYS_HAS_EARLY_PRINTK=y
 CONFIG_SYS_SUPPORTS_64BIT_KERNEL=y