[PATCH] arm: fix flush_pfn_alias

Arnd Bergmann arnd at arndb.de
Mon Oct 20 06:39:44 PDT 2014

On Monday 20 October 2014 21:54:02 Jungseung Lee wrote:
> L1_CACHE_BYTES could be larger than real L1 cache line size.
> In that case, flush_pfn_alias function would omit to flush last bytes
> as much as L1_CACHE_BYTES - real cache line size.

Can you list an example on what CPU this would happen in the
patch description? Isn't the L1 cache line size always 32 bytes on ARM?

> So fix end address to "to + PAGE_SIZE - 1". The bottom bits of the address
> is LINELEN. that is ignored by mcrr.
> Signed-off-by: Jungseung Lee <js07.lee at gmail.com>

Is this needed in stable backports?


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