domenico/openwrt-R7800-nss
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kernel: Remove CONFIG_COMPAT

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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>
This commit is contained in:
Hauke Mehrtens
2019-04-07 17:14:24 +02:00
parent 7099bf0926
commit 46af22de16
16 changed files with 3 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
target/linux/armvirt/64/config-default
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@@ -8,7 +8,6 @@ CONFIG_ARCH_HAS_KCOV=y
CONFIG_ARCH_MMAP_RND_BITS=18
CONFIG_ARCH_MMAP_RND_BITS_MAX=24
CONFIG_ARCH_MMAP_RND_BITS_MIN=18
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=11
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
@@ -32,7 +31,6 @@ CONFIG_ARM64_ERRATUM_826319=y
CONFIG_ARM64_ERRATUM_827319=y
CONFIG_ARM64_ERRATUM_832075=y
CONFIG_ARM64_ERRATUM_843419=y
CONFIG_ARM64_ERRATUM_845719=y
CONFIG_ARM64_HW_AFDBM=y
# CONFIG_ARM64_LSE_ATOMICS is not set
CONFIG_ARM64_MODULE_CMODEL_LARGE=y
@@ -48,7 +46,6 @@ CONFIG_ARM64_VA_BITS=39
CONFIG_ARM64_VA_BITS_39=y
# CONFIG_ARM64_VA_BITS_48 is not set
CONFIG_ARM64_VHE=y
# CONFIG_ARMV8_DEPRECATED is not set
CONFIG_ARM_GIC_V3_ITS=y
CONFIG_ARM_PMU=y
# CONFIG_ARM_SBSA_WATCHDOG is not set
@@ -56,7 +53,6 @@ CONFIG_ATOMIC64_SELFTEST=y
CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_BLOCK_COMPAT=y
CONFIG_BOUNCE=y
CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_VERSATILE=y
@@ -64,10 +60,6 @@ CONFIG_CLK_SP810=y
CONFIG_CLK_VEXPRESS_OSC=y
CONFIG_COMMON_CLK_VERSATILE=y
# CONFIG_COMMON_CLK_XGENE is not set
CONFIG_COMPAT=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_COMPAT_NETLINK_MESSAGES=y
CONFIG_COMPAT_OLD_SIGACTION=y
# CONFIG_CPU_BIG_ENDIAN is not set
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_GOV_LADDER is not set
@@ -114,7 +106,6 @@ CONFIG_HARDEN_BRANCH_PREDICTOR=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
@@ -176,7 +167,6 @@ CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_SYSVIPC_COMPAT=y
CONFIG_SYS_SUPPORTS_HUGETLBFS=y
# CONFIG_THUNDER_NIC_BGX is not set
# CONFIG_THUNDER_NIC_PF is not set