27 Nov
2016
27 Nov
'16
11:45 p.m.
On Mon, Nov 28, 2016 at 1:20 AM, Matthijs van Duin matthijsvanduin@gmail.com wrote:
On 23 November 2016 at 11:45, Grazvydas Ignotas notasas@gmail.com wrote:
OTOH now that I think about it, it might actually start doing writes after a task switch because ARM doesn't write-allocate cache.
Eh what? Yes it does. In fact the cortex-A15 does not support a no-write-allocate policy at all.
From what I see in the manual you can't have write-though (always
write RAM, even on cache hit) but you can still have no-allocate. Still I guess Linux doesn't map user pages like that so it doesn't matter.