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cb52f088f2
Expose the CFMWS "Window Restrictions" (CXL r4.0 9.18.1.3) as named per-window machine properties -- device-coherent, host-only, volatile, persistent, fixed-config and back-invalidate -- so the advertised restrictions can be configured per window rather than left at the default. No changes in default options. HDM-D and HDM-H are advertised by default; disabling one (device-coherent=off or host-only=off) narrows the window to the other. back-invalidate implies device-coherent (HDM-DB) and suppresses the host-only default. host-only coherent combined with back-invalidate is rejected as undefined behavior per the spec. Signed-off-by: Davidlohr Bueso <dave@stgolabs.net> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <20260720233242.901544-5-dave@stgolabs.net>