From 2ee3518b53cd82bca10448283bd8fe5a259c27b1 Mon Sep 17 00:00:00 2001
From: Igor Mammedov <imammedo@redhat.com>
Date: Wed, 20 Jun 2018 15:24:19 +0200
Subject: [PATCH 1/2] vl.c: do not allow --daemonize in combination with
--preconfig CLI option
some users when using --daemonize expect that QEMU will parse CLI options,
initialize VM and only then complete daemonzation by signalling lead
process to exit and start listening on monitor socket. So users treat
parent process exit as sync point to connect to QEMU's monitor.
That however doesn't work when --preconfig options is used, since it
provides monitor before completing daemonization and expects user to
issue exit-preconfig command when additional configuration via monitor
is finished. We also can't move completing daemonization before
preconfig monitor becomes available, since that would imply:
* partially loosing ability to configure QEMU instance in --preconfig
mode since QEMU might drop privileges, chroot and do other things
when daemonization is completed
* lead to loss of error messages in case they would happen after
daemonization
Be proactive now and make options mutually exclusive, so users would
get clear error message instead of waiting for lead process exit
indefinitely before connecting to monitor.
PS:
In case someone would come up with usecase where both options should
be enabled at the same time we could drop this restriction as far
as daemonization point is left where it is now (os_setup_post).
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1529501059-163139-1-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
vl.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/vl.c b/vl.c
index d451f45dc5..a37dfe4684 100644
--- a/vl.c
+++ b/vl.c
@@ -4134,6 +4134,12 @@ int main(int argc, char **argv, char **envp)
}
if (is_daemonized()) {
+ if (!preconfig_exit_requested) {
+ error_report("'preconfig' and 'daemonize' options are "
+ "mutually exclusive");
+ exit(EXIT_FAILURE);
+ }
+
/* According to documentation and historically, -nographic redirects
* serial port, parallel port and monitor to stdio, which does not work
* with -daemonize. We can redirect these to null instead, but since
From 08fe68244eb44f3c8ccecd35066eca8392d1345a Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Mon, 25 Jun 2018 11:05:12 +0200
Subject: [PATCH 2/2] hw/i386: Deprecate the machine types pc-0.10 and pc-0.11
The oldest machine type which is still used in a still maintained distro
is a pc-0.12 based machine type in RHEL6, so everything that is older
than pc-0.12 should not be used anymore. Thus let's deprecate pc-0.10
and pc-0.11 so that we can finally remove them in a future release.
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1529917512-10528-1-git-send-email-thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
hw/i386/pc_piix.c | 1 +
include/hw/boards.h | 3 +++
qemu-doc.texi | 5 +++++
vl.c | 10 ++++++++--
4 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index e9b6f064fb..d357907b0b 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -956,6 +956,7 @@ static void pc_i440fx_0_11_machine_options(MachineClass *m)
{
pc_i440fx_0_12_machine_options(m);
m->hw_version = "0.11";
+ m->deprecation_reason = "use a newer machine type instead";
SET_MACHINE_COMPAT(m, PC_COMPAT_0_11);
}
diff --git a/include/hw/boards.h b/include/hw/boards.h
index ef7457f5dd..79069ddcbe 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -107,6 +107,8 @@ typedef struct {
/**
* MachineClass:
+ * @deprecation_reason: If set, the machine is marked as deprecated. The
+ * string should provide some clear information about what to use instead.
* @max_cpus: maximum number of CPUs supported. Default: 1
* @min_cpus: minimum number of CPUs supported. Default: 1
* @default_cpus: number of CPUs instantiated if none are specified. Default: 1
@@ -166,6 +168,7 @@ struct MachineClass {
char *name;
const char *alias;
const char *desc;
+ const char *deprecation_reason;
void (*init)(MachineState *state);
void (*reset)(void);
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 282bc3dc35..16fcb47901 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -2943,6 +2943,11 @@ support page sizes < 4096 any longer.
@section System emulator machines
+@subsection pc-0.10 and pc-0.11 (since 3.0)
+
+These machine types are very old and likely can not be used for live migration
+from old QEMU versions anymore. A newer machine type should be used instead.
+
@section Device options
@subsection Block device options
diff --git a/vl.c b/vl.c
index a37dfe4684..d26f19b06d 100644
--- a/vl.c
+++ b/vl.c
@@ -2560,8 +2560,9 @@ static gint machine_class_cmp(gconstpointer a, gconstpointer b)
if (mc->alias) {
printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
}
- printf("%-20s %s%s\n", mc->name, mc->desc,
- mc->is_default ? " (default)" : "");
+ printf("%-20s %s%s%s\n", mc->name, mc->desc,
+ mc->is_default ? " (default)" : "",
+ mc->deprecation_reason ? " (deprecated)" : "");
}
}
@@ -4263,6 +4264,11 @@ int main(int argc, char **argv, char **envp)
configure_accelerator(current_machine);
+ if (!qtest_enabled() && machine_class->deprecation_reason) {
+ error_report("Machine type '%s' is deprecated: %s",
+ machine_class->name, machine_class->deprecation_reason);
+ }
+
/*
* Register all the global properties, including accel properties,
* machine properties, and user-specified ones.