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The assembler portions of fp-ptrace are passed feature flags by the C code indicating which architectural features are supported. Currently these use an entire register for each flag which is wasteful and gets cumbersome as new flags are added. Switch to using flag bits in a single register to make things easier to maintain. No functional change. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20241112-arm64-fp-ptrace-fpmr-v2-1-250b57c61254@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>