]> git.karo-electronics.de Git - linux-beck.git/commit
ARC: mm: arc700: Don't assume 2 colours for aliasing VIPT dcache
authorVineet Gupta <vgupta@synopsys.com>
Mon, 19 Dec 2016 19:38:38 +0000 (11:38 -0800)
committerVineet Gupta <vgupta@synopsys.com>
Mon, 19 Dec 2016 19:55:17 +0000 (11:55 -0800)
commit08fe007968b2b45e831daf74899f79a54d73f773
treecee4913c5c57caf93c839489bcbeb5de1c07c867
parentf64915be2d8c629e7b55ad37f90bd8db2713426e
ARC: mm: arc700: Don't assume 2 colours for aliasing VIPT dcache

An ARC700 customer reported linux boot crashes when upgrading to bigger
L1 dcache (64K from 32K). Turns out they had an aliasing VIPT config and
current code only assumed 2 colours, while theirs had 4. So default to 4
colours and complain if there are fewer. Ideally this needs to be a
Kconfig option, but heck that's too much of hassle for a single user.

Cc: stable@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
arch/arc/include/asm/cacheflush.h
arch/arc/mm/cache.c