RISC-V: Access CSRs using CSR numbers
We should prefer accessing CSRs using their CSR numbers because: 1. It compiles fine with older toolchains. 2. We can use latest CSR names in #define macro names of CSR numbers as-per RISC-V spec. 3. We can access newly added CSRs even if toolchain does not recognize newly addes CSRs by name. Signed-off-by:Anup Patel <anup.patel@wdc.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Palmer Dabbelt <palmer@sifive.com>
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