Commit 522239b4 authored by Dan Williams's avatar Dan Williams
Browse files

uio, lib: Fix CONFIG_ARCH_HAS_UACCESS_MCSAFE compilation 



Add a common Kconfig CONFIG_ARCH_HAS_UACCESS_MCSAFE that archs can
optionally select, and fixup the declaration of _copy_to_iter_mcsafe().

Fixes: 8780356e ("x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe()")
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 8780356e

include/linux/uio.h

+1 −1
Original line number Diff line number Diff line
@@ -155,7 +155,7 @@ size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i); 
#endif



#ifdef CONFIG_ARCH_HAS_UACCESS_MCSAFE

size_t _copy_to_iter_mcsafe(void *addr, size_t bytes, struct iov_iter *i);

size_t _copy_to_iter_mcsafe(const void *addr, size_t bytes, struct iov_iter *i);

#else

#define _copy_to_iter_mcsafe _copy_to_iter

#endif

lib/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -586,6 +586,9 @@ config ARCH_HAS_PMEM_API 
config ARCH_HAS_UACCESS_FLUSHCACHE

	bool



config ARCH_HAS_UACCESS_MCSAFE

	bool



config STACKDEPOT

	bool

	select STACKTRACE

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