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| author | Atish Patra <atishp@rivosinc.com> | 2024-07-11 15:31:10 -0700 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2024-07-18 12:08:44 +1000 |
| commit | b2d7a7c7e4e30fb5341d38deac968de675f9419c (patch) | |
| tree | cb43938ffe2840b746896b1c4f24e62d6de675ad /scripts/oss-fuzz | |
| parent | 3b31b7baff02b357a6c921b26ae953e04d0cfdbb (diff) | |
| download | qemu-b2d7a7c7e4e30fb5341d38deac968de675f9419c.zip qemu-b2d7a7c7e4e30fb5341d38deac968de675f9419c.tar.gz qemu-b2d7a7c7e4e30fb5341d38deac968de675f9419c.tar.bz2 | |
target/riscv: Implement privilege mode filtering for cycle/instret
Privilege mode filtering can also be emulated for cycle/instret by
tracking host_ticks/icount during each privilege mode switch. This
patch implements that for both cycle/instret and mhpmcounters. The
first one requires Smcntrpmf while the other one requires Sscofpmf
to be enabled.
The cycle/instret are still computed using host ticks when icount
is not enabled. Otherwise, they are computed using raw icount which
is more accurate in icount mode.
Co-Developed-by: Rajnesh Kanwal <rkanwal@rivosinc.com>
Signed-off-by: Rajnesh Kanwal <rkanwal@rivosinc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Message-ID: <20240711-smcntrpmf_v7-v8-7-b7c38ae7b263@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'scripts/oss-fuzz')
0 files changed, 0 insertions, 0 deletions