AVX and other XSTATE features not working on AWS with SEV-SNP

[thomasten]

Issue description

AVX support is disabled in OS images of Constellation.

To reproduce

• Spawn a Constellation cluster on AWS
• Spawn a nodes shell on a node
• lscpu | grep -i avx is empty

Environment

AWS

Expected behavior

lscpu | grep -i avx prints AVX

Additional info

This is an issue with SEV-SNP on AWS in general.

[hpvd]

if there are newer AVX versions supported, this one should show whats availabel:
lscpu | grep -o "avx[^ ]*"