exec: fix writing to MMIO area with non-power-of-two length
commit098178f2749a63fbbb1a626dcc7d939d5cb2bde7
authorPaolo Bonzini <pbonzini@redhat.com>
Mon, 29 Jul 2013 12:27:39 +0000 (29 14:27 +0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Thu, 5 Sep 2013 16:11:28 +0000 (5 18:11 +0200)
tree2da6a8109ddacaf5fc060119ea310856fedf33b4
parentaaa6a40194e9f204cb853f64ef3c1e170bb014e8
exec: fix writing to MMIO area with non-power-of-two length

The problem is introduced by commit 2332616 (exec: Support 64-bit
operations in address_space_rw, 2013-07-08).  Before that commit,
memory_access_size would only return 1/2/4.

Since alignment is already handled above, reduce l to the largest
power of two that is smaller than l.

Cc: qemu-stable@nongnu.org
Reported-by: Oleksii Shevchuk <alxchk@gmail.com>
Tested-by: Oleksii Shevchuk <alxchk@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
exec.c