[Xen-devel] [PATCH 0/2] QEMU/xen: simplify cpu_ioreq_pio and cpu_ioreq_move

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Hi all,
after reviewing the patch "fix multiply issue for int and uint types"
with Ian Jackson, we realized that cpu_ioreq_pio and cpu_ioreq_move are
in much need for a simplification as well as removal of a possible
integer overflow.

This patch series tries to accomplish both switching to two new helper
functions and using a more obvious arithmetic. Doing so it should also
fix the original problem that Dongxiao was experiencing. The C language
can be a nasty backstabber when signed and unsigned integers are
involved.

The current patch series if for qemu-xen-traditional but if the patches
are deemed correct I'll submit an equivalent set for QEMU upstream (with
the appropriate code style changes).



Stefano Stabellini (2):
      i should be uint32_t rather than int
      introduce read_physical_offset and write_physical_offset

 i386-dm/helper2.c |   66 +++++++++++++++++++++++++++++++++-------------------
 1 files changed, 42 insertions(+), 24 deletions(-)



Cheers,

Stefano

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