On Sun, 02 Feb 2020 05:42:15 PST (-0800), Anup Patel wrote:
> This series adds emulation of TIME CSRs for privileged mode. With
> this series, we see approximately 25+% improvement in hackbench
> numbers for non-virtualized (or Host) Linux and 40+% improvement
> in hackbench numbers for Guest/VM Linux.
>
> These patches are based on mainline/alistair/riscv-hyp-ext-v0.5.1
> branch of https://github.com/kvm-riscv/qemu.git and can be found
> in riscv_time_csr_v3 branch of same repo.
>
> Changes since v2:
> - Register CLINT rdtime callback only for QEMU RISC-V virt machine
>
> Changes since v1:
> - Use braces for single-line if-statements
>
> Anup Patel (2):
> target/riscv: Emulate TIME CSRs for privileged mode
> hw/riscv: Provide rdtime callback for TCG in CLINT emulation
>
> hw/riscv/sifive_clint.c | 6 ++-
> hw/riscv/sifive_e.c | 2 +-
> hw/riscv/sifive_u.c | 2 +-
> hw/riscv/spike.c | 9 ++--
> hw/riscv/virt.c | 2 +-
> include/hw/riscv/sifive_clint.h | 3 +-
> target/riscv/cpu.h | 5 ++
> target/riscv/cpu_helper.c | 5 ++
> target/riscv/csr.c | 86 +++++++++++++++++++++++++++++++--
> 9 files changed, 108 insertions(+), 12 deletions(-)
This is queued for the next pull request.
Thanks!