diff options
| author | Steve Sistare <steven.sistare@oracle.com> | 2021-02-25 11:25:02 -0800 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-03-16 10:39:27 -0600 |
| commit | 7dc4b2fdb27242faf40fc20ef83372b7033af050 (patch) | |
| tree | bb7f3e5cc64e0c07232bc8293507782dbe455d56 /drivers/vfio/Kconfig | |
| parent | 1e28eed17697bcf343c6743f0028cc3b5dd88bf0 (diff) | |
vfio/type1: fix unmap all on ILP32
Some ILP32 architectures support mapping a 32-bit vaddr within a 64-bit
iova space. The unmap-all code uses 32-bit SIZE_MAX as an upper bound on
the extent of the mappings within iova space, so mappings above 4G cannot
be found and unmapped. Use U64_MAX instead, and use u64 for size variables.
This also fixes a static analysis bug found by the kernel test robot running
smatch for ILP32.
Fixes: 0f53afa12bae ("vfio/type1: unmap cleanup")
Fixes: c19650995374 ("vfio/type1: implement unmap all")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Message-Id: <1614281102-230747-1-git-send-email-steven.sistare@oracle.com>
Link: https://lore.kernel.org/linux-mm/20210222141043.GW2222@kadam
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/Kconfig')
0 files changed, 0 insertions, 0 deletions