3:09 a.m.
From: Li Zhang <zhlcindy(a)linux.vnet.ibm.com>
Currently, -machine option is used only when dump-guest-core is used.
To use options defined in machine option for new version of QEMU,
it needs to use -machine xxx, and to be compatible with older version
-M, this patch addes QEMU_CAPS_MACH_OPT capability, and assumes
-machine is used for QEMU v1.0 onwards.
To avoid the collision for creating USB controllers when using USB
option and -device xxxx, it needs to set usb=off in machine option.
QEMU_CAPS_USB_OPT capability is added, and it will be for QEMU
v1.3.0-rc0 onwards which supports USB option.
Signed-off-by: Li Zhang <zhlcindy(a)linux.vnet.ibm.com>
---
src/qemu/qemu_capabilities.c | 10 ++++++++++
src/qemu/qemu_capabilities.h | 2 ++
src/qemu/qemu_command.c | 36 +++++++++++++++++++++++++-----------
tests/qemuxml2argvtest.c | 4 ++--
4 files changed, 39 insertions(+), 13 deletions(-)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 51fc9dc..79eb83f 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -205,6 +205,8 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
"usb-serial", /* 125 */
"usb-net",
"add-fd",
+ "mach-opt",
+ "usb-opt",
);
@@ -2416,6 +2418,14 @@ virQEMUCapsInitQMP(virQEMUCapsPtr qemuCaps,
virQEMUCapsInitQMPBasic(qemuCaps);
+ /* Assuming to use machine option v1.0 onwards*/
+ if (qemuCaps->version >= 1000000)
+ virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACH_OPT);
+
+ /* USB option is supported v1.3.0-rc0 onwards */
+ if (qemuCaps->version >= 1002090)
+ virQEMUCapsSet(qemuCaps, QEMU_CAPS_USB_OPT);
+
if (!(archstr = qemuMonitorGetTargetArch(mon)))
goto cleanup;
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index e69d558..06aaa68 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -166,6 +166,8 @@ enum virQEMUCapsFlags {
QEMU_CAPS_DEVICE_USB_SERIAL = 125, /* -device usb-serial */
QEMU_CAPS_DEVICE_USB_NET = 126, /* -device usb-net */
QEMU_CAPS_ADD_FD = 127, /* -add-fd */
+ QEMU_CAPS_MACH_OPT = 128, /* -machine xxxx*/
+ QEMU_CAPS_USB_OPT = 129, /* -machine xxxx,usb=off*/
QEMU_CAPS_LAST, /* this must always be the last item */
};
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 6c28123..e7dde21 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -4614,6 +4614,8 @@ qemuBuildMachineArgStr(virCommandPtr cmd,
const virDomainDefPtr def,
virQEMUCapsPtr qemuCaps)
{
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+
/* This should *never* be NULL, since we always provide
* a machine in the capabilities data for QEMU. So this
* check is just here as a safety in case the unexpected
@@ -4621,27 +4623,39 @@ qemuBuildMachineArgStr(virCommandPtr cmd,
if (!def->os.machine)
return 0;
- if (!def->mem.dump_core) {
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACH_OPT)) {
/* if no parameter to the machine type is needed, we still use
* '-M' to keep the most of the compatibility with older versions.
*/
virCommandAddArgList(cmd, "-M", def->os.machine, NULL);
} else {
- if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DUMP_GUEST_CORE)) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
- "%s", _("dump-guest-core is not available
"
- " with this QEMU binary"));
- return -1;
- }
/* However, in case there is a parameter to be added, we need to
* use the "-machine" parameter because qemu is not parsing the
* "-M" correctly */
+
virCommandAddArg(cmd, "-machine");
- virCommandAddArgFormat(cmd,
- "%s,dump-guest-core=%s",
- def->os.machine,
- virDomainMemDumpTypeToString(def->mem.dump_core));
+ virBufferAsprintf(&buf, "%s", def->os.machine);
+
+ /* To avoid the collision of creating USB controllers when calling
+ * machine->init in QEMU, it needs to set usb=off
+ */
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_USB_OPT))
+ virBufferAsprintf(&buf, ",usb=off");
+
+ if (def->mem.dump_core) {
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DUMP_GUEST_CORE)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ "%s", _("dump-guest-core is not available
"
+ " with this QEMU binary"));
+ return -1;
+ }
+
+ virBufferAsprintf(&buf, ",dump-guest-core=%s",
+ virDomainMemDumpTypeToString(def->mem.dump_core));
+ }
+
+ virCommandAddArg(cmd, virBufferContentAndReset(&buf));
}
return 0;
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 4357068..296503b 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -361,8 +361,8 @@ mymain(void)
DO_TEST("minimal-s390", QEMU_CAPS_NAME);
DO_TEST("machine-aliases1", NONE);
DO_TEST("machine-aliases2", QEMU_CAPS_KVM);
- DO_TEST("machine-core-on", QEMU_CAPS_DUMP_GUEST_CORE);
- DO_TEST("machine-core-off", QEMU_CAPS_DUMP_GUEST_CORE);
+ DO_TEST("machine-core-on", QEMU_CAPS_MACH_OPT, QEMU_CAPS_DUMP_GUEST_CORE);
+ DO_TEST("machine-core-off", QEMU_CAPS_MACH_OPT,
QEMU_CAPS_DUMP_GUEST_CORE);
DO_TEST_FAILURE("machine-core-on", NONE);
DO_TEST("boot-cdrom", NONE);
DO_TEST("boot-network", NONE);
--
1.7.10.1