@@ -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
@@ -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
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 <dan.j.williams@intel.com> --- Ingo, Thomas, fyi, here is a trivial compilation fixup I will carry in my tree based on tip/x86/dax. I missed defining the Kconfig symbol, and my unit test was only dependent on the low level implementation. include/linux/uio.h | 2 +- lib/Kconfig | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-)