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From: Abhinav Srivastava <abhinavs_iitkgp@yahoo.co.in>
To: Xen-devel <xen-devel@lists.xensource.com>
Subject: How to allocate a page inside the guest OS from Xen
Date: Thu, 5 Nov 2009 03:13:55 +0530 (IST)	[thread overview]
Message-ID: <801952.71859.qm@web7905.mail.in.yahoo.com> (raw)

Hi there,

In my project, I have to allocate a memory page inside the guest OS from the Xen hypervisor. The alloc_domheap_page(d) function allocates a single page from the dom heap, which looks okey for my purpose. But, I do not know how to add the allocated page into the guest page table, so that guest can access this page. I do not want to allocate a Xen page and share it with the guest. 

My question is: how do I make my guest OS aware of this page without doing anything inside the guest OS. Is there any function in Xen that directly adds a page into the guest OS address space or I have to walk on the guest page tables and add this page manually.

Any help would be appreciated?

Thanks,
Abhinav



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             reply	other threads:[~2009-11-04 21:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-04 21:43 Abhinav Srivastava [this message]
2009-11-05  2:14 ` How to allocate a page inside the guest OS from Xen James (song wei)

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