I'm also working on a similar thing - can you please tell me how you copy the memory pages from one part of the memory to another?
On Tue, Oct 13, 2015 at 10:04 AM 高强 <mrgao.buff...@gmail.com> wrote: > Hi,alls > > I'm modifying the source code of xen-4.4.1. Specifically, I'm modifying > the memory copy part of snapshot. I first put all memory pages to write > protection, and then rewrite the write protection exception part of the > code. After capture the exception then save the memory page , and all > memory page copy is complete, call the function xenaccess_teardown(xch, > xenaccess), but there is a mistake: > > libxl: error: libxl_utils.c:396:libxl_read_exactly: file/stream truncated > reading ipc msg header from domain 3 save/restore helper stdout pipe > libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain 3 > save/restore helper [-1] died due to fatal signal Segmentation fault (core > dumped) > Failed to save domain, resuming domain > > Has anyone ever meet this kind of problem, and who can tell me the cause > of the error. > > Thanks > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel >
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