Add xcr0 (os support) check

2019-01-05 18:08:02 +01:00
parent 68eb3146ce
commit e1574fa2b4
1 changed files with 2 additions and 0 deletions
--- a/driver/others/dynamic.c
+++ b/driver/others/dynamic.c
@@ -332,6 +332,8 @@ int support_avx512(){
      ret=0;  //OS does not even support AVX2
  }
  if((ebx & (1<<31)) != 0){
+    xgetbv(0, &eax, &edx);
+    if((eax & 0xe0) == 0xe0)
      ret=1;  //OS supports AVX512VL
  }
  return ret;