[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] pagetable handling in xen
On Mon, 24 Oct 2005, Aaron J. Marks wrote: > i'm trying to understand how xen handles pagetables, but i'm a bit > confused: > > 1. where is a new domain's memory mapping initialized in xen? > 2. what're the differences between idle_pg_table and linear_pg_table and > are they indexed by guest linear page #s or hardware page #s? > 3. [this is more of an affirmation, than a question] xen can't arbitrarily > access *any* physical page because it doesn't map all of physical > memory (eg, like linux does from PAGE_OFFSET)? okay, after staring at the code for a while (too long), i think i understand 1 & 2. however, i'm still uncertain about #3. i'd like to be able to iterate over every page table of every domain from *within* xen. is this possible? i guess the basic mechanism that i need is to be able to temporarily map a domain's machine pages into xen address space, do the traversal, then unmap (and repeat for each domain). thanks, -A. > > thanks, > -A. > > -- > Aaron Marks > Distributed Systems Lab > University of Pennsylvania > www.cis.upenn.edu/~ajmarks > > "Strange women lying in ponds distributing swords is no basis > for a system of government." > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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