On Sat, Feb 08, 2020 at 03:19:39PM +0000, Andrew Cooper wrote: > The written ABI states that %es will be set up, but libxc doesn't do so. In > practice, it breaks `rep movs` inside guests before they reload %es. > > The written ABI doesn't mention %ss, but libxc does set it up. Having %ds > different to %ss is obnoxous to work with, as different registers have > different implicit segments. > > Modify the spec to state that %ss is set up as a flat read/write segment. > This a) matches the Multiboot 1 spec, b) matches what is set up in practice, > and c) is the more sane behaviour for guests to use. > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Wei Liu <w...@xen.org> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
