On Mon, Apr 10, 2017 at 12:24:17PM +0100, Build bot for Mark Brown wrote:
Today's -next fails to build an arm64 allmodconfig due to:
arm64-allmodconfig ../mm/hmm.c:816:2: error: implicit declaration of function 'arch_remove_memory' [-Werror=implicit-function-declaration]
due to the recently added HMM support. There's no such function for arm64 but HMM is unconditionally available for all 64 bit architectures with a MMU.