| Message ID | 20240822122310.561885-1-peter.maydell@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [for-9.1?] system/vl.c: Print machine name, not "(null)", for unknown machine types | expand |
On 22/8/24 14:23, Peter Maydell wrote: > In commit 412d294ffdc we tried to improve the error message printed when > the machine type is unknown, but we used the wrong variable, resulting in: > > $ ./build/x86/qemu-system-aarch64 -M bang > qemu-system-aarch64: unsupported machine type: "(null)" > Use -machine help to list supported machines > > Use the right variable, so we produce more helpful output: > > $ ./build/x86/qemu-system-aarch64 -M bang > qemu-system-aarch64: unsupported machine type: "bang" > Use -machine help to list supported machines > > Note that we must move the qdict_del() to below the error_setg(), > because machine_type points into the value of that qdict entry, > and deleting it will make the pointer invalid. > > Cc: qemu-stable@nongnu.org > Fixes: 412d294ffdc ("vl.c: select_machine(): add selected machine type to error message") > Signed-off-by: Peter Maydell <peter.maydell@linaro.org> > --- > Tagged as for-9.1 because this is a sort-of regression since 9.0 > (in 9.0 we didn't try to print the machine type name at all in > this error). But it's also very close to release and this is only > cosmetics in an error message. The cc-stable is for the case where > we don't put it into 9.1 and then backport it to the 9.1 stable > branch after release. > > system/vl.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Oops, thanks! Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff --git a/system/vl.c b/system/vl.c index 41d53d2456a..01b8b8e77ad 100644 --- a/system/vl.c +++ b/system/vl.c @@ -1679,10 +1679,10 @@ static MachineClass *select_machine(QDict *qdict, Error **errp) if (machine_type) { machine_class = find_machine(machine_type, machines); - qdict_del(qdict, "type"); if (!machine_class) { - error_setg(errp, "unsupported machine type: \"%s\"", optarg); + error_setg(errp, "unsupported machine type: \"%s\"", machine_type); } + qdict_del(qdict, "type"); } else { machine_class = find_default_machine(machines); if (!machine_class) {
In commit 412d294ffdc we tried to improve the error message printed when the machine type is unknown, but we used the wrong variable, resulting in: $ ./build/x86/qemu-system-aarch64 -M bang qemu-system-aarch64: unsupported machine type: "(null)" Use -machine help to list supported machines Use the right variable, so we produce more helpful output: $ ./build/x86/qemu-system-aarch64 -M bang qemu-system-aarch64: unsupported machine type: "bang" Use -machine help to list supported machines Note that we must move the qdict_del() to below the error_setg(), because machine_type points into the value of that qdict entry, and deleting it will make the pointer invalid. Cc: qemu-stable@nongnu.org Fixes: 412d294ffdc ("vl.c: select_machine(): add selected machine type to error message") Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- Tagged as for-9.1 because this is a sort-of regression since 9.0 (in 9.0 we didn't try to print the machine type name at all in this error). But it's also very close to release and this is only cosmetics in an error message. The cc-stable is for the case where we don't put it into 9.1 and then backport it to the 9.1 stable branch after release. system/vl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)