On Fri, 2014-05-02 at 16:30 +0100, Steve Capper wrote: > On Fri, May 02, 2014 at 11:20:33AM -0400, Mark Salter wrote: > > As explained in more detail in the second patch, I have observed a soft > > lockup under some loads. These lockups were in flush_tlb_kernel_range() > > which was looping through a very large address range. While looking into > > this, I also noticed the flush routines in tlb.S were not properly > > handling pages larger than 4k. This is corrected in the first patch. > > The second patch limits the loop size for the flush_tlb_[kernel_]range > > functions. It uses an arbitrary constant to limit the loop, but it > > would be better if it were based on actual tlb size or some other > > heuristic. > > > > Mark Salter (2): > > arm64: fix unnecessary tlb flushes > > arm64: fix soft lockup due to large tlb flush range > > > > arch/arm64/include/asm/tlbflush.h | 28 +++++++++++++++++++++++++--- > > arch/arm64/mm/tlb.S | 4 ++-- > > 2 files changed, 27 insertions(+), 5 deletions(-) > > > > Hi Mark, > As a heads-up, I posted this earlier today: > http://lists.infradead.org/pipermail/linux-arm-kernel/2014-May/252837.html > > Cheers,
Thanks. That takes care of the pagesize handling (my patch 1/2). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
