Hi, I've been looking into live patching for the first time.
Starting with a 4.12.1 build: $ cd ~/dev $ ls -l total 8 drwxr-xr-x 3 andy andy 4096 Oct 25 16:11 xen drwxr-xr-x 6 andy andy 4096 Dec 2 01:16 livepatch-build-tools (there is already a 4.12.1 hypervisor built in /xen and is what's running on this host with build_id b18af774b56b0c98cfa6940a725ba2ba26066929) $ cp -a xen xen-lptest $ cd livepatch-build-tools $ ./livepatch-build -j 1 -s /home/andy/dev/xen-lptest/xen-4.12.1 -c /home/andy/dev/xen-lptest/xen-4.12.1/xen/.config -p ./lptest.patch -o lptest -d --depends b18af774b56b0c98cfa6940a725ba2ba26066929 Building LivePatch patch: lptest Xen directory: /home/andy/dev/xen-lptest/xen-4.12.1 Patch file: /home/andy/dev/livepatch-build-tools/lptest.patch .config file: /home/andy/dev/xen-lptest/xen-4.12.1/xen/.config Output directory: /home/andy/dev/livepatch-build-tools/xsa310 ================================================ Perform full initial build with 1 CPU(s)... Reading special section data ERROR: can't find special struct size. So it seems it completed the initial build without error but looking at the livepatch-build script it runs readelf like this: $ readelf -wi lptest/xen-syms $ For me this produces no output. I've probably done something simple wrong. Does that indicate some simple mistake in my process? The patch was just a trivial addition of some logging as a test, but I don't think it got as far as applying that. $ readelf --version GNU readelf (GNU Binutils for Debian) 2.31.1 Copyright (C) 2018 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or (at your option) any later version. This program has absolutely no warranty. $ gcc --version gcc (Debian 8.3.0-6) 8.3.0 Copyright (C) 2018 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Thanks, Andy _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
