Commit cb80b2a3 authored Nov 19, 2015 by Leonid Yegoshin Committed by Ralf Baechle May 13, 2016

MIPS: remove aliasing alignment if HW has antialising support



MIPS hardware may have an antialising support and it works even
page size is small.

Setup a shared memory aliasing mask to page size if hardware has
an antialising support. Big shared memory mask forces a disruption
in page address assignment and that corrupts Android library memory
handling.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: cernekee@gmail.com
Cc: paul.gortmaker@windriver.com
Cc: kumba@gentoo.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11516/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 201233e6

arch/mips/mm/c-r4k.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1721,7 +1721,7 @@ void r4k_cache_init(void)
		* This code supports virtually indexed processors and will be
		* unnecessarily inefficient on physically indexed processors.
		*/
		if (c->dcache.linesz)
		if (c->dcache.linesz && cpu_has_dc_aliases)
		shm_align_mask = max_t( unsigned long,
		c->dcache.sets * c->dcache.linesz - 1,
		PAGE_SIZE - 1);