[Xen-devel] save/restore compatibility broken

["Zhai, Edwin" <edwin.zhai@xxxxxxxxx>]

Keir,
From r17037, hvm_{get|set}_segment_register are used to save/restore
the VMCS segment register. But they introduce new compat image format
for xx_arbytes, i.e.
reg->attr.bytes = (attr & 0xff) | ((attr >> 4) & 0xf00);

This caused wrong VMCS setting for arbytes when restore old image on
new changeset.

How to fix it? Can we determine it's old format if bit 12~15 of
cs_arbytes is not zero, and then translate it?

Thanks,
edwin



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel