On Mon, Feb 16, 2015 at 06:38:20PM +0000, Will Deacon wrote: > Various build/boot bots have reported WARNs being triggered by the ARM > iopgtable LPAE self-tests on i386 machines. > > This boils down to two instances of right-shifting a 32-bit unsigned > long (i.e. an iova) by more than the size of the type. On 32-bit ARM, > this happens to give us zero, hence my testing didn't catch this > earlier. > > This patch fixes the issue by using DIV_ROUND_UP and explicit case to > to avoid the erroneous shifts. > > Reported-by: Fengguang Wu <[email protected]> > Reported-by: Huang Ying <[email protected]> > Signed-off-by: Will Deacon <[email protected]> > --- > > Joerg -- please can you apply this as a fix for 3.20?
Applied to my fixes branch, thanks Will. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
