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[Xen-devel] VM_FOREIGN could be set into direct_remap_pfn_range()?
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] VM_FOREIGN could be set into direct_remap_pfn_range()? |
| From: | Wei Kong <weikong.cn@xxxxxxxxx> |
| Date: | Tue, 10 Nov 2009 12:48:39 +0800 |
| Delivery-date: | Mon, 09 Nov 2009 20:49:02 -0800 |
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Now we encounter a EFAULT in get_user_pages() when xm save on old ocfs2-1.4.1 fs. Due to in xc_domain_save got VM_IO when mmap and IOCTL_PRIVCMD_MMAPBATCH, but not VM_FOREIGN, but old ocfs2-1.4.1 has get_user_pages() when do write. I don't know is there any side effect if I set VM_FOREIGN for vm_flags in direct_remap_pfn_range(). --thank you Kong _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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