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09cfefb7fa
Add memory management support for LoongArch, including: cache and tlb management, page fault handling and ioremap/mmap support. Reviewed-by: WANG Xuerui <git@xen0n.name> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
10 lines
275 B
C
10 lines
275 B
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/uaccess.h>
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#include <linux/kernel.h>
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bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size)
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{
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/* highest bit set means kernel space */
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return (unsigned long)unsafe_src >> (BITS_PER_LONG - 1);
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}
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