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kernel: Activate CONFIG_ARM64_SW_TTBR0_PAN

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This activates "Emulate Privileged Access Never using TTBR0_EL1
switching" on ARM64.

This should prevent the kernel from reading code from user space in
kernel context.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Hauke Mehrtens
2019-04-07 18:06:34 +02:00
parent 9b1239451d
commit 32eb66881c
11 changed files with 2 additions and 9 deletions
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1
target/linux/generic/config-4.14
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@@ -285,6 +285,7 @@ CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
# CONFIG_ARM64_ERRATUM_845719 is not set
# CONFIG_ARM64_ERRATUM_858921 is not set
# CONFIG_ARM64_RELOC_TEST is not set
CONFIG_ARM64_SW_TTBR0_PAN=y
# CONFIG_ARM_APPENDED_DTB is not set
# CONFIG_ARM_ARCH_TIMER is not set
# CONFIG_ARM_BIG_LITTLE_CPUFREQ is not set

1
target/linux/generic/config-4.19
View File

@@ -296,6 +296,7 @@ CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
# CONFIG_ARM64_ERRATUM_858921 is not set
# CONFIG_ARM64_RAS_EXTN is not set
# CONFIG_ARM64_RELOC_TEST is not set
CONFIG_ARM64_SW_TTBR0_PAN=y
# CONFIG_ARM_APPENDED_DTB is not set
# CONFIG_ARM_ARCH_TIMER is not set
# CONFIG_ARM_BIG_LITTLE_CPUFREQ is not set