lkml.org 
[lkml]   [2015]   [Feb]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] iommu/io-pgtable-arm: fix self-test WARNs on i386
    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 <fengguang.wu@intel.com>
    > Reported-by: Huang Ying <ying.huang@intel.com>
    > Signed-off-by: Will Deacon <will.deacon@arm.com>
    > ---
    >
    > Joerg -- please can you apply this as a fix for 3.20?

    Applied to my fixes branch, thanks Will.



    \
     
     \ /
      Last update: 2015-02-25 14:01    [W:0.056 / U:10.220 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site