回复：[RISC-V] [tech-privileged] [RFC] Toolchain interface for privilege spec related stuff.
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Also we are talking with @Philipp about how to keep compatible with vector v0.7.1 on toolchain interface,
we suggest that we prefer this method to control it, e.g. -march=rv64gcv0p7 to specify vector v0.7.1,
i think it's more consistent also,
whether we use the 'v' extension with version number rather than 'x' extension to implement the requirement ?