Add xcr0 (os support) check

martin-frbg · web-flow · commit e1574fa2b4a2 · 2019-01-05T18:08:02.000+01:00
diff --git 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;

Original file line number	Diff line number	Diff line change
`@@ -332,6 +332,8 @@ int support_avx512(){`
`332`	`332`	`ret=0; //OS does not even support AVX2`
`333`	`333`	`}`
`334`	`334`	`if((ebx & (1<<31)) != 0){`
	`335`	`+ xgetbv(0, &eax, &edx);`
	`336`	`+ if((eax & 0xe0) == 0xe0)`
`335`	`337`	`ret=1; //OS supports AVX512VL`
`336`	`338`	`}`
`337`	`339`	`return ret;`