In xen 3.0.4-1 source, where is the *unhook/rehook page table implementation* which is important things in ''writable page table mode''.? I can''t find it. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Mark Williamson
2007-Mar-16 01:52 UTC
Re: [Xen-devel] What code is related to the writable page?
On Saturday 10 March 2007 04:26, Hwandori wrote:> In xen 3.0.4-1 source, where is the *unhook/rehook page table > implementation* which is important things in ''writable page table mode''.? > I can''t find it.AFAIK it''s not used in 3.0.4. Writeable pagetable is emulated by trapping updates to leaf pagetables and applying them individually. I believe there are some explicit calls in XenLinux to make batching of updates possible in the cases where this is important (which is what writeable pagetables was originally there fore). This approach has been shown to have higher performance than the unhook/rehook implementation. Cheers, Mark -- Dave: Just a question. What use is a unicyle with no seat? And no pedals! Mark: To answer a question with a question: What use is a skateboard? Dave: Skateboards have wheels. Mark: My wheel has a wheel! _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel