re: version matching, when I looked at this last week it seemed that
qemu sets up a build stamp, which is then used to create its DSO stamp
fun (cause this is so fun ;)
I wonder if the dso abi could be firmed up and made consistent, at least
for major versions, so that the loader could be a bit more flexible
about loading drivers from other builds.
ddstreet@thorin:~/repos/qemu/qemu$ git grep CONFIG_STAMP
configure: echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat
$0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
include/qemu/module.h:#define DSO_STAMP_FUN glue(qemu_stamp,
CONFIG_STAMP)
ddstreet@thorin:~/repos/qemu/qemu$ git grep DSO_STAMP_FUN
include/qemu/module.h:#define DSO_STAMP_FUN glue(qemu_stamp,
CONFIG_STAMP)
include/qemu/module.h:#define DSO_STAMP_FUN_STR stringify(DSO_STAMP_FUN)
include/qemu/module.h:void DSO_STAMP_FUN(void);
module-common.c:void DSO_STAMP_FUN(void)
util/module.c: if (!g_module_symbol(g_module, DSO_STAMP_FUN_STR, (gpointer
*)&sym)) {
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https://bugs.launchpad.net/bugs/1847361
Title:
Upgrade of qemu binaries causes running instances not able to
dynamically load modules
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