Commit f474c8c8 authored Feb 22, 2016 by Mika Penttilä Committed by Russell King Mar 04, 2016

ARM: 8544/1: set_memory_xx fixes

Allow zero size updates. This makes set_memory_xx() consistent with x86, s390 and arm64 and makes apply_to_page_range() not to BUG() when loading modules.

Signed-off-by: Mika Penttilä <mika.penttila@nextfour.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent c7edd7f9

arch/arm/mm/pageattr.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -49,6 +49,9 @@ static int change_memory_common(unsigned long addr, int numpages,
		WARN_ON_ONCE(1);
		}

		if (!numpages)
		return 0;

		if (start < MODULES_VADDR \|\| start >= MODULES_END)
		return -EINVAL;