In case there were options set in the default config file, print a warning so users can update their scripts.
If somebody wants to keep the config file as-is, avoid the warning and use a command-line that will work in future QEMU versions, they can use: $QEMU -no-user-config -readconfig /etc/qemu/qemu.conf I was going to include the suggestion in the warning message, but I thought it could make it more confusing. The suggestion is documented in qemu-doc.texi. Signed-off-by: Eduardo Habkost <ehabk...@redhat.com> --- Changes v3 -> v4: * Use warn_report() instead of error_report("warning: ...") (Eric Blake) * Document as a deprecated feature in qemu-doc.texi * Update subject line (was: "vl: Print warning when a default config file is loaded") Changes v2 -> v3: * Rebase (no code changes) * Commit message update: suggest -no-user-config --- vl.c | 6 ++++++ qemu-doc.texi | 8 ++++++++ 2 files changed, 14 insertions(+) diff --git a/vl.c b/vl.c index 3fed457921..1b0ecdf74e 100644 --- a/vl.c +++ b/vl.c @@ -3066,6 +3066,12 @@ static int qemu_read_default_config_file(void) return ret; } + if (ret > 0) { + loc_set_none(); + warn_report("Future QEMU versions won't load %s automatically", + CONFIG_QEMU_CONFDIR "/qemu.conf"); + } + return 0; } diff --git a/qemu-doc.texi b/qemu-doc.texi index ecd186a159..a81a09d05c 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -2370,6 +2370,14 @@ they were first deprecated in the 2.10.0 release. What follows is a list of all features currently marked as deprecated. +@section Automatic loading of @file{qemu.conf} (since 2.11.0) + +The automatic loading of an user-provided @file{qemu.conf} file from the QEMU +config directory is deprecated and behavior will change in future QEMU versions. +To load an user-provided @file{qemu.conf} file and keep compatibility with +future versions, the arguments @samp{-no-user-config -readconfig +@var{CONFDIR}/qemu.conf} may be used. + @section System emulator command line arguments @subsection -drive boot=on|off (since 1.3.0) -- 2.13.5