Commits
Will Deacon committed 367bd978b81
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>