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| author | Will Deacon <will.deacon@arm.com> | 2015-02-16 18:38:20 (GMT) |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-02-25 12:37:32 (GMT) |
| commit | 367bd978b81c2c7bcdcacdd3156645a27fab0676 (patch) | |
| tree | f64011e8248831b77a25acac1349b16ca621e650 /tools | |
| parent | c517d838eb7d07bbe9507871fab3931deccff539 (diff) | |
| download | linux-367bd978b81c2c7bcdcacdd3156645a27fab0676.tar.xz | |
iommu/io-pgtable-arm: Fix self-test WARNs on i386
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>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions