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[Xen-devel] HELP! Grant table issue: WARNING: leaking g.e. and page stil
| To: | xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] HELP! Grant table issue: WARNING: leaking g.e. and page still in use! |
| From: | "Lily Huang" <ushuanglily@xxxxxxxxx> |
| Date: | Mon, 15 May 2006 14:19:16 -0400 |
| Delivery-date: | Mon, 15 May 2006 11:19:39 -0700 |
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My code often runs into this warning message: WARNING: leaking g.e. and page still in use! I found that the gnttab.c generate this error message. But I don't know how to get rid of this issue. Here is what I did in my code: 1. frontend: allocate pages, grant sharing permission to backend, 2. backend remap this page and use it 3. after backend use the shared page, it call "HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, unmap, invcount);" to end mapping 4. then backend notify the frontend via evtchn 5. upon receiving the signal, the frontend calls "gnttab_end_foreign_access(ref, 0, 0UL);" to stop sharing. I think this is where I got this warning. Anyone know how to fix this problem? Thanks in advance! -lily _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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