Hi Luca, On 22/05/2024 09:51, Luca Fancellu wrote: > > > From: Penny Zheng <penny.zh...@arm.com> > > We are doing foreign memory mapping for static shared memory, and > there is a great possibility that it could be super mapped. > But today, p2m_put_l3_page could not handle superpages. > > This commits implements a new function p2m_put_l2_superpage to handle > 2MB superpages, specifically for helping put extra references for > foreign superpages. > > Modify relinquish_p2m_mapping as well to take into account preemption > when type is foreign memory and order is above 9 (2MB). > > Currently 1GB superpages are not handled because Xen is not preemptible > and therefore some work is needed to handle such superpages, for which > at some point Xen might end up freeing memory and therefore for such a > big mapping it could end up in a very long operation. > > Signed-off-by: Penny Zheng <penny.zh...@arm.com> > Signed-off-by: Luca Fancellu <luca.fance...@arm.com> Reviewed-by: Michal Orzel <michal.or...@amd.com>
~Michal
