Since Armv9.6, FEAT_LSUI supplies the load/store instructions for previleged level to access to access user memory without clearing PSTATE.PAN bit. It's enough to add CONFIG_AS_HAS_LSUI only because the code for LSUI uses individual `.arch_extension` entries.
Signed-off-by: Yeoreum Yun yeoreum.yun@arm.com Reviewed-by: Catalin Marinas catalin.marinas@arm.com --- arch/arm64/Kconfig | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 93173f0a09c7..36e87a1a1b5c 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -2227,6 +2227,11 @@ config ARM64_GCS
endmenu # "ARMv9.4 architectural features"
+config AS_HAS_LSUI + def_bool $(as-instr,.arch_extension lsui) + help + Supported by LLVM 20+ and binutils 2.45+. + config ARM64_SVE bool "ARM Scalable Vector Extension support" default y -- LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}