On 3/3/21 6:33 pm, NicoHood via arch-dev-public wrote:
On 3/2/21 12:51 PM, Allan McRae via arch-dev-public wrote:
Hi all,
A new RFC has been opened here: https://gitlab.archlinux.org/archlinux/rfcs/-/merge_requests/2
Summary: Make -march=x86_64-v2 the default for our packages. This assumes the following instruction sets which are essentially available on all but the oldest AMD CPUs:
CMPXCHG16B, LAHF-SAHF, POPCNT, SSE3, SSE4.1, SSE4.2, SSSE3
Please visit the above link for discussion.
Allan
Is there a way to test if my system supports those instructions?
cat /proc/cpuinfo | grep sse4_2 If you have support for that, then the rest should be fine.
Maybe a user poll can give us a better overview how many people are affected?
People who are affected have more motivation to answer than those who are not. Any poll would be meaningless. A