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 implements the runtime constant infrastructure for arm64, allowing
the dcache d_hash() function to be generated using as a constant for
hash table address followed by shift by a constant of the hash index.
[ Fixed up to deal with the big-endian case as per Mark Rutland ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
