From 522239b445a2de988edb81672963708a6aaf9046 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 22 May 2018 23:17:03 -0700 Subject: 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: 8780356ef630 ("x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe()") Signed-off-by: Dan Williams --- include/linux/uio.h | 2 +- lib/Kconfig | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/include/linux/uio.h b/include/linux/uio.h index f5766e853a77..409c845d4cd3 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -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 diff --git a/lib/Kconfig b/lib/Kconfig index 5fe577673b98..907f6e4f1cf2 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -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 -- cgit