From: Tristan Gingold
Sent: 2006年5月15日 16:17
Hi,
currently shared_info and privregs are allocated on xenheap.
I propose to allocate them on domheap and to map these pages on
domain pseudo
physical memory.
I think this is more logical and will help for save and restore (make them
accessible by dom0).
Comments ?
Tristan.
Hi, Tristan,
Following link talks some background about why shared_info is
allocated from xenheap:
http://lists.xensource.com/archives/html/xen-devel/2006-01/msg00258.html
For xen/ia64, to allocate shared_info from domheap faces less
boring issues as x86, but you have to consider several common issues
like refcnt or domain statistic accounting mentioned from the thread. I
believe those can be worked around, but you may check whether worthy
of doing that. :-)
BTW, it may be a good idea to add shared_info page (even from
xeneheap) into the domain's pseudo memory space, especially when
current ia64 dom0 is based on p!=m model. In that way, dom0 can simply
map all domain's memory including shared_info by uniform interface.
Hope helps a bit.
Thanks,
Kevin
3 messages in com.xensource.lists.xen-ia64-develRE: [Xen-ia64-devel] shared_info and ...