Goruntime sets mxcsr once and never changes it. Reported-by: syzbot+ec55cea6e57ec083b7a6@syzkaller.appspotmail.com Fixes: #5754
This allows the package to serve as a general purpose ring0 support package, as opposed to being bound to specific sentry platforms. Updates #5039 PiperOrigin-RevId: 355220044