Re: [PATCH][RFC] asm-generic:remove calling flush_write_buffers()in dma_sync_*_for_cpu

[Alan Cox]

> > What about non x86 - this is asm-generic you are playing with and its the
> > kind of change that causes evil really hard to track down and subtle
> > corruptions and user data loss if you get it wrong.
> 
> Non-x86 is the real motivation for the patch, because the flush_write_buffers
> call in this file is currently not implemented and causes build errors
> on everything but x86, frv, ia64 and m32r, where the latter two implement
> it as an empty macro.

Ok so the FRV would grow a similar no iommu patch to the x86.

> The only users of the file right now are x86 and ia64, and ia64 only added
> the empty flush_write_buffers() definition in order to use it.

That now all makes sense.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/