[Linaro-mm-sig] Memory region attribute bits and multiple mappings

[Thomas Martitz]

Am 19.04.2011 23:11, schrieb Rebecca Schultz Zavin:
> Until recently the dma api in the kernel was doing it too.  Apparently 
> it's related to speculative prefetching, so as far as my understand 
> goes, not an issue on Cortex-A8 where the feature isn't present. 
>  However, there have been a couple of cases of data corruption due to 
> it on A9.

A8 and A9 are too new for us :) We deal with ARMv4-v6 mostly.

> Be aware though, it's a race condition, just because you never saw it 
> doesn't mean you couldn't have.

That's true.

Best regards.