On 7 February 2014 14:47, Paolo Bonzini <pbonz...@redhat.com> wrote:
> Commit 360e607 (address_space_translate: do not cross page boundaries,
> 2014-01-30) broke MMIO accesses in cases where the section is shorter
> than the full register width.  This can happen for example with the
> Bochs DISPI registers, which are 16 bits wide but have only a 1-byte
> long MemoryRegion (if you write to the "second byte" of the register
> your access is discarded; it doesn't write only to half of the register).
>
> Restrict the action of commit 360e607 to direct RAM accesses.  This
> is enough for Xen, since MMIO will not go through the mapcache.
>
> Reported-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
> Cc: qemu-sta...@nongnu.org
> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>

Applied to master, thanks.

-- PMM

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