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747a43e818
1.11 defines mcountinhibit, which has the same numeric CSR value as mucounteren from 1.09.1 but has different semantics. This patch enables the CSR for 1.11-based targets, which is trivial to implement because the counters in QEMU never tick (legal according to the spec). Signed-off-by: Alistair Francis <alistair.francis@wdc.com> [Palmer: Fix counter access semantics, change commit message to indicate the behavior is fully emulated.] Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com> |
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