Re: [RFC] qemu: Check for changes in qemu modules directory

Add a configuration option for specifying location of the qemu modules directory, defaulting to /usr/lib64/qemu. Then use this location to check for changes in the directory, indicating that a qemu module has changed and capabilities need to be reprobed. Signed-off-by: Jim Fehlig <jfehlig(a)suse.com&gt; --- This is a mildly tested impl of the idea discussed here (and elsewhere in the thread) https://www.redhat.com/archives/libvir-list/2020-August/msg00684.html I've checked that both system and session caches are updated when a qemu modules package is updated. I'll do some more testing but wanted to send the patch for early comments. Testing in other environments would be much appreciated. Thanks! meson.build | 6 ++++++ meson_options.txt | 1 + src/qemu/qemu_capabilities.c | 35 +++++++++++++++++++++++++++++++++++ 3 files changed, 42 insertions(+) diff --git a/meson.build b/meson.build index a72d0c0e85..16928482aa 100644 --- a/meson.build +++ b/meson.build @@ -1745,6 +1745,12 @@ if not get_option('driver_qemu').disabled() if use_qemu conf.set('WITH_QEMU', 1) + qemu_moddir = get_option('qemu_moddir') + if qemu_moddir == '' + qemu_moddir = '/usr/lib64/qemu'

+ endif + conf.set_quoted('QEMU_MODDIR', qemu_moddir) +