On Fri, Jun 13, 2014 at 01:18:00PM +0200, Greg Kurz wrote: > This version merges the changes requested during the v7 review, remarks from > ppc64 dump support review (yes, we talked about virtio there) and the work on > virtio subsections migration. Also two new patches have been added: > - patch #1 is a preliminary fix for virtio-serial posted by Alexander Graf > - patch #9 prepares the work on the virtio_is_big_endian() helper > > The most significant changes are: > - introduction of a new CPU method for virtio > - endianness is taken from CPU that resets the device > - fastpath virtio memory accessors for fixed endian targets > - VMState based virtio subsections (compatibility friendly)
I'm surprised it's not enough for the virtio device to have an endianness field (big/little). It seems these patches make endianness depend on the CPUState through which the device is being accessed. Can you explain why it's necessary to check the CPUState? Stefan
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