Merge tag 'powerpc-5.10-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (47003b99) · Commits · 戴 / test

Pull powerpc fix from Michael Ellerman: "One commit to implement copy_from_kernel_nofault_allowed(), otherwise copy_from_kernel_nofault() can trigger warnings when accessing bad addresses in some configurations. Thanks to Christophe Leroy and Qian Cai" * tag 'powerpc-5.10-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/mm: Fix KUAP warning by providing copy_from_kernel_nofault_allowed()

arch/powerpc/mm/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -5,7 +5,7 @@

		ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)

		obj-y := fault.o mem.o pgtable.o mmap.o \
		obj-y := fault.o mem.o pgtable.o mmap.o maccess.o \
		init_$(BITS).o pgtable_$(BITS).o \
		pgtable-frag.o ioremap.o ioremap_$(BITS).o \
		init-common.o mmu_context.o drmem.o

arch/powerpc/mm/maccess.c

0 → 100644

+9 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only

		#include <linux/uaccess.h>
		#include <linux/kernel.h>

		bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size)
		{
		return is_kernel_addr((unsigned long)unsafe_src);
		}

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