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RE: grant table anxiety [was RE: [Xen-devel] GNTTABOP_unmap_grant_ref]
| To: | "King, Steven R" <steven.r.king@xxxxxxxxx>, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, "Mark Williamson" <mark.williamson@xxxxxxxxxxxx>, "Rusty Russell" <rusty@xxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: grant table anxiety [was RE: [Xen-devel] GNTTABOP_unmap_grant_ref] |
| From: | "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> |
| Date: | Wed, 25 Jan 2006 22:36:58 -0000 |
| Cc: | xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 25 Jan 2006 22:45:51 +0000 |
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| Thread-topic: | grant table anxiety [was RE: [Xen-devel] GNTTABOP_unmap_grant_ref] |
> I've aired grievances against grant tables in other threads, > but now I'm getting worried all over again. Your suggestions > give a hint of the intricate handling required to manage > shared pages. IMHO, this pushes paravirtual guests to > unnatural lengths, not to mention prospects in pure-virtual > environments. Allowing user space to get access to shared pages by allowing them to map pages in a special device seems pretty sensible, and is pretty trivial to implement in the kernel. > Could we dispense with these complexities if a 3rd party > (Xen?) owned shared pages? No, the accounting issue is totally orthogonal. Ian _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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