According the talk[1], because the architecture get updated, what used to be a RES1 bit becomes a functinal bit. So we can define the name for these bits, this also increase the readability. [1] lore.kernel.org/ZLZQ6r4-9mVdg4Ry@monolith.localdoman v1: https://lore.kernel.org/all/20230719031926.752931-1-shahuang@xxxxxxxxxx/ Thanks, Eric for the suggestions: - Rephrase the commit title in patch 1. - Use the _BITULL(). - Delete the SCTLR_EL1_RES1 and unwind its definition into INIT_SCTLR_EL1_MMU_OFF. Shaoqin Huang (2): arm64: Use _BITULL() to define SCTLR_EL1 bit fields arm64: Define name for these bits used in SCTLR_EL1 lib/arm64/asm/sysreg.h | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-) -- 2.39.1
