From: Michael Vrable <mvrable@cs.ucsd.edu>
To: xen-devel@lists.sourceforge.net
Subject: Full Shadow Mode and phys_to_machine_mapping
Date: Mon, 21 Feb 2005 13:29:04 -0800 [thread overview]
Message-ID: <20050221212904.GA4689@vrable.net> (raw)
I'm trying to figure out how full shadow mode is implemented; I
understand that this only works with VMX support at the moment. The
phys_to_machine_mapping function is giving me a bit of trouble.
This function seems to be used to look up an entry in the PFN-to-MFN
mapping table, which as I understand it for full shadow mode should be
maintained by Xen instead of the domain. This table can be up to 4 MB
in size. __phys_to_machine_mapping is set to point at the per-domain
virtual memory area. Isn't this area already used for per-domain
GDT/LDT mappings, leaving no room for the PFN-to-MFN table? I haven't
been able to find where in the code the PFN-to-MFN table is ever
initialized, either. What am I missing?
--Michael Vrable
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next reply other threads:[~2005-02-21 21:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-21 21:29 Michael Vrable [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-02-21 21:53 Full Shadow Mode and phys_to_machine_mapping Ian Pratt
[not found] <mailman.1109021409.2134@unix-os.sc.intel.com>
2005-02-23 23:22 ` Arun Sharma
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