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arm64: make runtime const not usable by modules

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Similar as commit 284922f4c5 ("x86: uaccess: don't use runtime-const
rewriting in modules") does, make arm64's runtime const not usable by
modules too, to "make sure this doesn't get forgotten the next time
somebody wants to do runtime constant optimizations". The reason is
well explained in the above commit: "The runtime-const infrastructure
was never designed to handle the modular case, because the constant
fixup is only done at boot time for core kernel code."

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jisheng Zhang 2026-02-21 10:38:47 +08:00 • committed by Will Deacon
parent c25c4aa3f7
commit 0100e495cd
1 changed files with 4 additions and 0 deletions
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4
arch/arm64/include/asm/runtime-const.h
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@ -2,6 +2,10 @@
#ifndef _ASM_RUNTIME_CONST_H
#define _ASM_RUNTIME_CONST_H
#ifdef MODULE
#error "Cannot use runtime-const infrastructure from modules"
#endif
#include <asm/cacheflush.h>
/* Sigh. You can still run arm64 in BE mode */