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target/riscv/pmp.c: pmpcfg_csr_read returns bogus value on RV64
pmp_read_cfg() returns 8-bit value, which is combined together to form a single pmpcfg CSR. The default promotion rules will result in an integer here ("i*8" is integer, which flows through) resulting in a 32-bit signed value on most hosts. That's bogus on RV64I, with the high bits of the CSR being wrong. Signed-off-by: Dayeol Lee <dayeol@berkeley.edu> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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