1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_FPU_XCR_H
3 #define _ASM_X86_FPU_XCR_H
5 #define XCR_XFEATURE_ENABLED_MASK 0x00000000
7 static inline u64 xgetbv(u32 index)
11 asm volatile("xgetbv" : "=a" (eax), "=d" (edx) : "c" (index));
12 return eax + ((u64)edx << 32);
15 static inline void xsetbv(u32 index, u64 value)
18 u32 edx = value >> 32;
20 asm volatile("xsetbv" :: "a" (eax), "d" (edx), "c" (index));
23 #endif /* _ASM_X86_FPU_XCR_H */