mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-04-29 05:52:38 -04:00
7dc4b2fdb2
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:0f53afa12b("vfio/type1: unmap cleanup") Fixes:c196509953("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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.