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Yury NorovandAndrew Morton
c02be2ad2b
The kernel allows arches to select between inline and outline
implementations of the copy_{from,to}_user() by defining individual
INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER, correspondingly. However,
all arches enable or disable them always together.
Without the real use-case for one helper being inlined while the other
outlined, having independent controls is excessive and error prone.
Switch the codebase to the single unified INLINE_COPY_USER control.
Link: https://lore.kernel.org/20260425020857.356850-3-ynorov@nvidia.com
Signed-off-by: Yury Norov <ynorov@nvidia.com>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Viktor Malik <vmalik@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* User memory access support for Hexagon
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*
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* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
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*/
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#ifndef _ASM_UACCESS_H
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#define _ASM_UACCESS_H
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/*
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* User space memory access functions
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*/
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#include <asm/sections.h>
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/*
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* When a kernel-mode page fault is taken, the faulting instruction
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* address is checked against a table of exception_table_entries.
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* Each entry is a tuple of the address of an instruction that may
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* be authorized to fault, and the address at which execution should
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* be resumed instead of the faulting instruction, so as to effect
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* a workaround.
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*/
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/* Assembly somewhat optimized copy routines */
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unsigned long raw_copy_from_user(void *to, const void __user *from,
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unsigned long n);
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unsigned long raw_copy_to_user(void __user *to, const void *from,
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unsigned long n);
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#define INLINE_COPY_USER
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__kernel_size_t __clear_user_hexagon(void __user *dest, unsigned long count);
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#define __clear_user(a, s) __clear_user_hexagon((a), (s))
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#include <asm-generic/uaccess.h>
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#endif
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