[FFmpeg-devel] [PATCH 7/7] configure: enable Linux perf on RISC-V by default

2023-07-15 Thread Rémi Denis-Courmont
Now that checkasm can automatically fall back to RDCYCLE, it is safe to enable this for forward compatibility with kernel versions mitigating the "Cycle Drift" side channel attack. Where available, this should also reduce measurement noise, since kernel and hypervisor cycles should no longer be co

[FFmpeg-devel] [PATCH 7/7] configure: enable Linux perf on RISC-V by default

2023-07-14 Thread Rémi Denis-Courmont
Now that checkasm can automatically fall back to RDCYCLE, it is safe to enable this for forward compatibility with kernel versions mitigating the "Cycle Drift" side channel attack. Where available, this should also reduce measurement noise, since kernel and hypervisor cycles should no longer be co