Re: [Qemu-arm] [Qemu-devel] [PATCH v3 1/5] target/arm: support reading of CNT[VCT|FRQ]_EL0 from user-space

[Richard Henderson]

On 06/25/2018 09:00 AM, Alex Bennée wrote:
> Since kernel commit a86bd139f2 (arm64: arch_timer: Enable CNTVCT_EL0
> trap..) user-space has been able to read these system registers. As we
> can't use QEMUTimer's in linux-user mode we just directly call
> cpu_get_clock().
> 
> Signed-off-by: Alex Bennée <address@hidden>
> 
> ---
> v2
>   - include CNTFRQ_EL0 for PL0_R only
> v3
>   - use NANOSECONDS_PER_SECOND / GTIMER_SCALE
> ---
>  target/arm/helper.c | 27 ++++++++++++++++++++++++---
>  1 file changed, 24 insertions(+), 3 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>


r~