block: VHDX endian fixes
This patch contains several changes for endian conversion fixes for VHDX, particularly for big-endian machines (multibyte values in VHDX are all on disk in LE format). Tests were done with existing qemu-iotests on an IBM POWER7 (8406-71Y). This includes sample images created by Hyper-V, both with dirty logs and without. In addition, VHDX image files created (and written to) on a BE machine were tested on a LE machine, and vice-versa. Reported-by: NMarkus Armburster <armbru@redhat.com> Reported-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NJeff Cody <jcody@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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