Dear Mike Frysinger, > On Sunday 01 April 2012 17:00:56 Marek Vasut wrote: > > Dear Mike Frysinger, > > > > > On Sunday 01 April 2012 09:22:59 Stefano Babic wrote: > > > > If the range passed to flush_cache is not multiple > > > > of ARCH_DMA_MINALIGN, a warning due to mislaignment > > > > is printed. > > > > Detected with fec_mxc, mx35 boards: > > > > > > > > CACHE: Misaligned operation at range [80800000, 8083c310] > > > > > > warning on flushing is broken. the arch/arm/cpu/arm926ejs/cache.c code > > > should probably be fixed instead. > > > > Why exactly? > > the flush isn't harmful (ignoring the fact that a few extra bytes might get > written back to external memory), and the data isn't evicted from cache. > after all, we aren't talking about invalidate here, we're talking about > flush.
Right ... and can you be sure nothing important is overwritten in RAM? > plus, no other arch (linux or u-boot) does this. > > so the better question is, why exactly should you be warning ? you should > provide justification when doing something unusual ... Because you can destroy data in DRAM that arrived there by DMA transfer for example? > -mike Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
