Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
arm64: Kconfig: Add support for LSUI
Since Armv9.6, FEAT_LSUI supplies the load/store instructions for
previleged level to access to access user memory without clearing
PSTATE.PAN bit.
Add Kconfig option entry for FEAT_LSUI.
Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
authored by
Yeoreum Yun
and committed by
Catalin Marinas
377609ae
16dbe77a
+20
+20
arch/arm64/Kconfig
+20
arch/arm64/Kconfig
···
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endmenu # "ARMv9.4 architectural features"
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config AS_HAS_LSUI
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def_bool $(as-instr,.arch_extension lsui)
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help
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Supported by LLVM 20+ and binutils 2.45+.
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menu "ARMv9.6 architectural features"
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config ARM64_LSUI
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bool "Support Unprivileged Load Store Instructions (LSUI)"
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default y
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depends on AS_HAS_LSUI && !CPU_BIG_ENDIAN
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help
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The Unprivileged Load Store Instructions (LSUI) provides
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variants load/store instructions that access user-space memory
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from the kernel without clearing PSTATE.PAN bit.
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This feature is supported by LLVM 20+ and binutils 2.45+.
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endmenu # "ARMv9.6 architectural feature"
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config ARM64_SVE
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bool "ARM Scalable Vector Extension support"
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default y