[FFmpeg-devel] [PATCH 7/7] configure: enable Linux perf on RISC-V by default
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 counted. --- configure | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure b/configure index 0ab0761011..3be074e15b 100755 --- a/configure +++ b/configure @@ -5754,7 +5754,7 @@ case $target_os in ;; linux) enable section_data_rel_ro -enabled_any arm aarch64 && enable_weak linux_perf +enabled_any arm aarch64 riscv && enable_weak linux_perf ;; irix*) target_os=irix -- 2.40.1 ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-devel] [PATCH 7/7] configure: enable Linux perf on RISC-V by default
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 counted. --- configure | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure b/configure index 0ab0761011..3be074e15b 100755 --- a/configure +++ b/configure @@ -5754,7 +5754,7 @@ case $target_os in ;; linux) enable section_data_rel_ro -enabled_any arm aarch64 && enable_weak linux_perf +enabled_any arm aarch64 riscv && enable_weak linux_perf ;; irix*) target_os=irix -- 2.40.1 ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
