x86/fpu: Move xgetbv()/xsetbv() into a separate header (1b4fb854) · Commits · 戴 / test

arch/x86/include/asm/fpu/internal.h

+1 −29

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@
		#include <asm/user.h>
		#include <asm/fpu/api.h>
		#include <asm/fpu/xstate.h>
		#include <asm/fpu/xcr.h>
		#include <asm/cpufeature.h>
		#include <asm/trace/fpu.h>

		@@ -585,33 +586,4 @@ static inline void switch_fpu_finish(struct fpu *new_fpu)
		__write_pkru(pkru_val);
		}

		/*
		* MXCSR and XCR definitions:
		*/

		static inline void ldmxcsr(u32 mxcsr)
		{
		asm volatile("ldmxcsr %0" :: "m" (mxcsr));
		}

		extern unsigned int mxcsr_feature_mask;

		#define XCR_XFEATURE_ENABLED_MASK 0x00000000

		static inline u64 xgetbv(u32 index)
		{
		u32 eax, edx;

		asm volatile("xgetbv" : "=a" (eax), "=d" (edx) : "c" (index));
		return eax + ((u64)edx << 32);
		}

		static inline void xsetbv(u32 index, u64 value)
		{
		u32 eax = value;
		u32 edx = value >> 32;

		asm volatile("xsetbv" :: "a" (eax), "d" (edx), "c" (index));
		}

		#endif /* _ASM_X86_FPU_INTERNAL_H */

0 → 100644

+34 −0

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0 */
		#ifndef _ASM_X86_FPU_XCR_H
		#define _ASM_X86_FPU_XCR_H

		/*
		* MXCSR and XCR definitions:
		*/

		static inline void ldmxcsr(u32 mxcsr)
		{
		asm volatile("ldmxcsr %0" :: "m" (mxcsr));
		}

		extern unsigned int mxcsr_feature_mask;

		#define XCR_XFEATURE_ENABLED_MASK 0x00000000

		static inline u64 xgetbv(u32 index)
		{
		u32 eax, edx;

		asm volatile("xgetbv" : "=a" (eax), "=d" (edx) : "c" (index));
		return eax + ((u64)edx << 32);
		}

		static inline void xsetbv(u32 index, u64 value)
		{
		u32 eax = value;
		u32 edx = value >> 32;

		asm volatile("xsetbv" :: "a" (eax), "d" (edx), "c" (index));
		}

		#endif /* _ASM_X86_FPU_XCR_H */