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Re: [Xen-devel] Mapping hvm guest pages in Dom0
| To: | Satya <satyakiran@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Mapping hvm guest pages in Dom0 |
| From: | "Jean Guyader" <jean.guyader@xxxxxxxxx> |
| Date: | Sat, 27 Sep 2008 01:12:12 +0100 |
| Cc: | Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Fri, 26 Sep 2008 17:12:36 -0700 |
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Hi, On Fri, Sep 26, 2008 at 8:02 PM, Satya <satyakiran@xxxxxxxxx> wrote: > hello, > I would like to map (Read/Write) pages owned by a HVM guest from my Dom0 > Linux kernel module. I have access to the "machine frame numbers" of these > pages. > > 1. What is the right interface to do this? kmap needs 'struct page' ptrs > which I doubt exist for pages owned by a HVM guest. Is there a hypercall to > do this then? > You can use xc_map_foreign_ranges function inside libxc (link with xenctrl). > 2. Do I need to modify the HVM behavior in any way for this? (e.g., load a > driver in the guest that will setup grant tables?). I need to keep my guest > "pure HVM". > You don't need to modify your hvm for doing that. -- Jean Guyader _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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