Hi,

On Mon, Jun 13, 2022 at 02:46:01AM +0800, Hongren (Zenithal) Zheng wrote:

This patch parses Zb/Zk related string from DT and
output them in cpuinfo

One thing worth noting is that if DT provides zk,
all zbkb, zbkc, zbkx and zkn, zkr, zkt would be enabled.

Note that zk is a valid extension name and the current
DT binding spec allows this.

This patch also changes the logical id of
existing multi-letter extensions and adds a statement
that instead of logical id compatibility, the order
is needed.

There currently lacks a mechanism to merge them when
producing cpuinfo. Namely if you provide a riscv,isa
"rv64imafdc_zk_zks", the cpuinfo output would be
"rv64imafdc_zbkb_zbkc_zbkx_zknd_zkne_zknh_zkr_zksed
_zksh_zkt"

Tested-by: Jiatai He <redacted>
Signed-off-by: Hongren (Zenithal) Zheng <i@zenithal.me>

FWIW, after some rebasing:

Tested-by: Samuel Ortiz <redacted>

Cheers,
Samuel.