Re: [Qemu-devel] [PATCH v2 3/3] target/arm: Rely on hflags correct in cpu_get_tb_cpu_state

2019-02-20 Thread Alex Bennée
Richard Henderson writes: > This is the payoff. > > From perf record -g data of ubuntu 18 boot and shutdown: > > BEFORE: > > - 23.02% 2.82% qemu-system-aar [.] helper_lookup_tb_ptr >- 20.22% helper_lookup_tb_ptr > + 10.05% tb_htable_lookup > - 9.13% cpu_get_tb_cpu_state

[Qemu-devel] [PATCH v2 3/3] target/arm: Rely on hflags correct in cpu_get_tb_cpu_state

2019-02-19 Thread Richard Henderson
This is the payoff. >From perf record -g data of ubuntu 18 boot and shutdown: BEFORE: - 23.02% 2.82% qemu-system-aar [.] helper_lookup_tb_ptr - 20.22% helper_lookup_tb_ptr + 10.05% tb_htable_lookup - 9.13% cpu_get_tb_cpu_state 3.20% aa64_va_parameters_both