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[RFC,4/4] arm64: Select ARCH_ENABLE_DENY_WRITE_EXEC

Message ID 20220413134946.2732468-5-catalin.marinas@arm.com (mailing list archive)
State New, archived
Headers show
Series mm, arm64: In-kernel support for memory-deny-write-execute (MDWE) | expand

Commit Message

Catalin Marinas April 13, 2022, 1:49 p.m. UTC
This will allow the DENY_WRITE_EXEC personality flag to prevent creating
a PROT_EXEC mapping that is or was also PROT_WRITE.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
---
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 57c4c995965f..6cbdc8294337 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -13,6 +13,7 @@  config ARM64
 	select ARCH_BINFMT_ELF_EXTRA_PHDRS
 	select ARCH_BINFMT_ELF_STATE
 	select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE
+	select ARCH_ENABLE_DENY_WRITE_EXEC
 	select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
 	select ARCH_ENABLE_MEMORY_HOTPLUG
 	select ARCH_ENABLE_MEMORY_HOTREMOVE