 Home |
Products |
Support |
Community |
News |
xen-devel
[Xen-devel] Pinning a DomU Guest data page from Hypervisor
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] Pinning a DomU Guest data page from Hypervisor |
| From: | veerasena reddy <veeruyours@xxxxxxxxx> |
| Date: | Wed, 3 Aug 2011 19:26:47 +0530 |
| Delivery-date: | Wed, 03 Aug 2011 06:59:16 -0700 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; bh=pGXEYTrpz89Sry0w6jUshN5tYOzktr1zXQR2UAQwKV0=; b=t1gFXFCZx6GUKdClmdoXkHAqh01MNnO+tE3aze8NguU4TKYncff7TkWaj5+jGH4QaY VuQnI+LUgSaY8vwPVgKlZy7QlqrC7uAVXxr5709wBsIHtMWFEpzdH5+QD5MuCgd8m/CF h+yyHf0magjVkCFAIlH65glud7CHTxEXcBAF8= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
Hi, I have a DomU Guest (PVHVM) running a customized PV network driver. To increase the network IO performance I would like to try providing the address of the Guest pages directly to the network device without involving dom0.
For this i need to convert the GMFN of the page to MFN in hypervisor and pin the page. I could map the device BAR to hypervisor and write the Guest addresses to device. But I couldn't get how to Pin the Guest pages.
I looked into code "xen/arch/x86/mm.c", do_mmuext_op() which was invoking xsm_memory_pin_page() only for L1 to L4 page table type pages. Can i use the same API to pin data pages? Could anybody please advice how can I pin a Guest data page from hypervisor. Any APIs or sequence of operations to be done on MFN of the guest page? Thanks & Regards, VSR.
_______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | [Xen-devel] Re: [PATCH v2 0/6] Collected vdso/vsyscall fixes for 3.1, Konrad Rzeszutek Wilk |
|---|---|
| Next by Date: | [Xen-devel] Re: [PATCH v2 0/6] Collected vdso/vsyscall fixes for 3.1, Andrew Lutomirski |
| Previous by Thread: | [Xen-devel] [PATCH v2 0/6] Collected vdso/vsyscall fixes for 3.1, Andy Lutomirski |
| Next by Thread: | Re: [Xen-devel] Pinning a DomU Guest data page from Hypervisor, Pasi Kärkkäinen |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
