On Fri, 2010-07-02 at 15:55 +0100, Matthew Wilson wrote: > On 2 July 2010 15:03, Chris Tyler <chris@xxxxxxxxxxx> wrote: > > Oddly, the OMAP system always calculated the right value regardless of > > the fixups setting, while the Kirkwood needed fixups enabled to display > > the right value. Why do the two processors act differently? Does the > > OMAP processor have additional logic handle to handle non-aligned > > access? [snip] > > Yes. The OMAP3530's Cortex-A8 supports unaligned memory accesses. > There will be an overhead for accessing what is actually two memory > locations and fixing the result, but it'll be nothing like the > overhead of causing an abort and handling it in the kernel. > > See, for example: > > http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0344k/Beihgifg.html > > Hope that helps, > Matthew Thanks, Matthew! That's a great link. -Chris _______________________________________________ arm mailing list arm@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/arm
