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Samuel Holland
6cbd1d6d36
Several architectures provide an API to enable the FPU and run floating-point SIMD code in kernel space. However, the function names, header locations, and semantics are inconsistent across architectures, and FPU support may be gated behind other Kconfig options. provide a standard way for architectures to declare that kernel space FPU support is available. Architectures selecting this option must implement what is currently the most common API (kernel_fpu_begin() and kernel_fpu_end(), plus a new function kernel_fpu_available()) and provide the appropriate CFLAGS for compiling floating-point C code. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Samuel Holland <[email protected]> Suggested-by: Christoph Hellwig <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Acked-by: Christian König <[email protected]> Cc: Alex Deucher <[email protected]> Cc: Borislav Petkov (AMD) <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Huacai Chen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Masahiro Yamada <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nicolas Schier <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Russell King <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: WANG Xuerui <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
13 lines
246 B
C
13 lines
246 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_FPU_H
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#define _LINUX_FPU_H
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#ifdef _LINUX_FPU_COMPILATION_UNIT
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#error FP code must be compiled separately. See Documentation/core-api/floating-point.rst.
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#endif
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#include <asm/fpu.h>
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#endif
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