[libvirt] [PATCH v2 0/2] qemu: Support for QXL heads
v2: don't change heads when migrating v1: https://www.redhat.com/archives/libvir-list/2016-March/msg00410.html Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1283207 Martin Kletzander (2): qemu: Check for qxl's max_outputs parameter qemu: Add support to QXL's max_outputs parameter src/qemu/qemu_capabilities.c | 4 ++ src/qemu/qemu_capabilities.h | 2 + src/qemu/qemu_command.c | 8 ++++ src/qemu/qemu_migration.c | 50 ++++++++++++++++++++-- .../qemuxml2argv-video-qxl-heads.args | 28 ++++++++++++ .../qemuxml2argv-video-qxl-heads.xml | 47 ++++++++++++++++++++ tests/qemuxml2argvtest.c | 8 ++++ .../qemuxml2xmlout-video-qxl-heads.xml | 47 ++++++++++++++++++++ tests/qemuxml2xmltest.c | 2 + 9 files changed, 192 insertions(+), 4 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-video-qxl-heads.xml -- 2.7.3
There is max_outputs parameter for both qxl and qxl-vga and there is no easy way of saying that we want the capability enabled only if both are supported. So let's have two of them and only use them together. Signed-off-by: Martin Kletzander <mkletzan@redhat.com> --- src/qemu/qemu_capabilities.c | 4 ++++ src/qemu/qemu_capabilities.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index b223837e249a..c2c404681a9e 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -321,6 +321,8 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST, "qxl-vga.vram64_size_mb", /* 215 */ "chardev-logfile", "debug-threads", + "qxl.max_outputs", + "qxl-vga.max_outputs", ); @@ -1659,11 +1661,13 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVmwareSvga[] = { static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQxl[] = { { "vgamem_mb", QEMU_CAPS_QXL_VGAMEM }, { "vram64_size_mb", QEMU_CAPS_QXL_VRAM64 }, + { "max_outputs", QEMU_CAPS_QXL_MAX_OUTPUTS }, }; static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQxlVga[] = { { "vgamem_mb", QEMU_CAPS_QXL_VGA_VGAMEM }, { "vram64_size_mb", QEMU_CAPS_QXL_VGA_VRAM64 }, + { "max_outputs", QEMU_CAPS_QXL_VGA_MAX_OUTPUTS }, }; static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioGpu[] = { diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index caf3d1be7be3..705a9bfdf67e 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -351,6 +351,8 @@ typedef enum { QEMU_CAPS_QXL_VGA_VRAM64, /* -device qxl-vga.vram64_size_mb */ QEMU_CAPS_CHARDEV_LOGFILE, /* -chardev logfile=xxxx */ QEMU_CAPS_NAME_DEBUG_THREADS, /* Is -name debug-threads= available */ + QEMU_CAPS_QXL_MAX_OUTPUTS, /* -device qxl,max-outputs= */ + QEMU_CAPS_QXL_VGA_MAX_OUTPUTS, /* -device qxl-vga,max-outputs= */ QEMU_CAPS_LAST /* this must always be the last item */ } virQEMUCapsFlags; -- 2.7.3
Historically, we added heads=1 to videos, but for example for qxl, we did not reflect that on the command line. Implementing that now could mean that if user were to migrate from older to newer libvirt, the command-line for qemu would differ. In order for that not to happen a migration cookie flag is introduced. Signed-off-by: Martin Kletzander <mkletzan@redhat.com> --- src/qemu/qemu_command.c | 8 ++++ src/qemu/qemu_migration.c | 50 ++++++++++++++++++++-- .../qemuxml2argv-video-qxl-heads.args | 28 ++++++++++++ .../qemuxml2argv-video-qxl-heads.xml | 47 ++++++++++++++++++++ tests/qemuxml2argvtest.c | 8 ++++ .../qemuxml2xmlout-video-qxl-heads.xml | 47 ++++++++++++++++++++ tests/qemuxml2xmltest.c | 2 + 7 files changed, 186 insertions(+), 4 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-video-qxl-heads.xml diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index b18e4257740a..28fc72e40d3e 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -3998,6 +3998,14 @@ qemuBuildDeviceVideoStr(const virDomainDef *def, /* QEMU accepts mebibytes for vgamem_mb. */ virBufferAsprintf(&buf, ",vgamem_mb=%u", video->vgamem / 1024); } + + if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_QXL_VGA_MAX_OUTPUTS) && + virQEMUCapsGet(qemuCaps, QEMU_CAPS_QXL_MAX_OUTPUTS)) { + if (video->heads) + virBufferAsprintf(&buf, ",max_outputs=%u", video->heads); + } else { + video->heads = 0; + } } else if (video->vram && ((video->type == VIR_DOMAIN_VIDEO_TYPE_VGA && virQEMUCapsGet(qemuCaps, QEMU_CAPS_VGA_VGAMEM)) || diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index c0b580d33d65..040dd18502c4 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -87,6 +87,7 @@ enum qemuMigrationCookieFlags { QEMU_MIGRATION_COOKIE_FLAG_NBD, QEMU_MIGRATION_COOKIE_FLAG_STATS, QEMU_MIGRATION_COOKIE_FLAG_MEMORY_HOTPLUG, + QEMU_MIGRATION_COOKIE_FLAG_VIDEO_HEADS, QEMU_MIGRATION_COOKIE_FLAG_LAST }; @@ -100,7 +101,8 @@ VIR_ENUM_IMPL(qemuMigrationCookieFlag, "network", "nbd", "statistics", - "memory-hotplug"); + "memory-hotplug", + "video-heads"); enum qemuMigrationCookieFeatures { QEMU_MIGRATION_COOKIE_GRAPHICS = (1 << QEMU_MIGRATION_COOKIE_FLAG_GRAPHICS), @@ -110,6 +112,7 @@ enum qemuMigrationCookieFeatures { QEMU_MIGRATION_COOKIE_NBD = (1 << QEMU_MIGRATION_COOKIE_FLAG_NBD), QEMU_MIGRATION_COOKIE_STATS = (1 << QEMU_MIGRATION_COOKIE_FLAG_STATS), QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG = (1 << QEMU_MIGRATION_COOKIE_FLAG_MEMORY_HOTPLUG), + QEMU_MIGRATION_COOKIE_VIDEO_HEADS = (1 << QEMU_MIGRATION_COOKIE_FLAG_VIDEO_HEADS), }; typedef struct _qemuMigrationCookieGraphics qemuMigrationCookieGraphics; @@ -1386,6 +1389,9 @@ qemuMigrationBakeCookie(qemuMigrationCookiePtr mig, if (flags & QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG) mig->flagsMandatory |= QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG; + if (flags & QEMU_MIGRATION_COOKIE_VIDEO_HEADS) + mig->flagsMandatory |= QEMU_MIGRATION_COOKIE_VIDEO_HEADS; + if (!(*cookieout = qemuMigrationCookieXMLFormatStr(driver, mig))) return -1; @@ -3006,6 +3012,7 @@ qemuMigrationBeginPhase(virQEMUDriverPtr driver, qemuDomainObjPrivatePtr priv = vm->privateData; virCapsPtr caps = NULL; unsigned int cookieFlags = QEMU_MIGRATION_COOKIE_LOCKSTATE; + size_t i = 0, j = 0; VIR_DEBUG("driver=%p, vm=%p, xmlin=%s, dname=%s," " cookieout=%p, cookieoutlen=%p," @@ -3037,8 +3044,6 @@ qemuMigrationBeginPhase(virQEMUDriverPtr driver, if (nmigrate_disks) { if (has_drive_mirror) { - size_t i, j; - /* Check user requested only known disk targets. */ for (i = 0; i < nmigrate_disks; i++) { for (j = 0; j < vm->def->ndisks; j++) { @@ -3083,6 +3088,27 @@ qemuMigrationBeginPhase(virQEMUDriverPtr driver, vm->newDef && virDomainDefHasMemoryHotplug(vm->newDef))) cookieFlags |= QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG; + /* + * If there is at least one QXL video with number of heads + * defined, we need to indicate that we now know how to + * properly specify that on the command-line. Destination + * that cannot do this will properly block such migration and + * new enough destination will know that the value can be kept + * and not reset. + */ + if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_QXL_MAX_OUTPUTS) && + virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_QXL_VGA_MAX_OUTPUTS)) { + for (i = 0; i < vm->def->nvideos; i++) { + virDomainVideoDefPtr vid = vm->def->videos[i]; + + if (vid->type == VIR_DOMAIN_VIDEO_TYPE_QXL && + vid->heads) { + cookieFlags |= QEMU_MIGRATION_COOKIE_VIDEO_HEADS; + break; + } + } + } + if (!(mig = qemuMigrationEatCookie(driver, vm, NULL, 0, 0))) goto cleanup; @@ -3343,6 +3369,7 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver, bool stopProcess = false; bool relabel = false; int rv; + size_t i = 0; virNWFilterReadLockFilterUpdates(); @@ -3443,7 +3470,8 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver, if (!(mig = qemuMigrationEatCookie(driver, vm, cookiein, cookieinlen, QEMU_MIGRATION_COOKIE_LOCKSTATE | QEMU_MIGRATION_COOKIE_NBD | - QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG))) + QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG | + QEMU_MIGRATION_COOKIE_VIDEO_HEADS))) goto cleanup; if (STREQ_NULLABLE(protocol, "rdma") && @@ -3487,6 +3515,20 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver, goto stopjob; dataFD[0] = -1; /* the FD is now owned by incoming */ + if (!(mig->flags & QEMU_MIGRATION_COOKIE_VIDEO_HEADS)) { + /* + * Source didn't know how to properly specify number of heads + * for QXL video, so in order to migrate with ABI kept, leave + * the value unspecified. + */ + for (i = 0; i < vm->def->nvideos; i++) { + virDomainVideoDefPtr vid = vm->def->videos[i]; + + if (vid->type == VIR_DOMAIN_VIDEO_TYPE_QXL) + vid->heads = 0; + } + } + rv = qemuProcessLaunch(dconn, driver, vm, QEMU_ASYNC_JOB_MIGRATION_IN, incoming, NULL, VIR_NETDEV_VPORT_PROFILE_OP_MIGRATE_IN_START, diff --git a/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.args b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.args new file mode 100644 index 000000000000..a939177088f9 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.args @@ -0,0 +1,28 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/home/test \ +USER=test \ +LOGNAME=test \ +QEMU_AUDIO_DRV=none \ +/usr/bin/qemu \ +-name QEMUGuest1 \ +-S \ +-M pc \ +-m 214 \ +-smp 1 \ +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \ +-nographic \ +-nodefaults \ +-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \ +-no-acpi \ +-boot c \ +-usb \ +-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \ +-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \ +-device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,max_outputs=1,\ +bus=pci.0,addr=0x2 \ +-device qxl,id=video1,ram_size=67108864,vram_size=33554432,max_outputs=3,\ +bus=pci.0,addr=0x4 \ +-device qxl,id=video2,ram_size=67108864,vram_size=67108864,max_outputs=7,\ +bus=pci.0,addr=0x5 \ +-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.xml b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.xml new file mode 100644 index 000000000000..45d08745e652 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-video-qxl-heads.xml @@ -0,0 +1,47 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <disk type='block' device='disk'> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> + </controller> + <controller type='ide' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <video> + <model type='qxl' ram='65536' vram='32768' vgamem='8192' heads='3'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> + </video> + <video> + <model type='qxl' ram='65536' vram='65536' vgamem='8192' heads='7'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> + </video> + <video> + <model type='qxl' ram='65536' vram='65536' vgamem='8192' heads='1' primary='yes'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </video> + <memballoon model='virtio'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </memballoon> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index e15da3738db3..2a16140812de 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1889,6 +1889,14 @@ mymain(void) DO_TEST("ppc64-usb-controller-legacy", QEMU_CAPS_PIIX3_USB_UHCI); + DO_TEST("video-qxl-heads", + QEMU_CAPS_DEVICE_VIDEO_PRIMARY, + QEMU_CAPS_VGA_QXL, + QEMU_CAPS_DEVICE_QXL_VGA, + QEMU_CAPS_DEVICE_QXL, + QEMU_CAPS_QXL_MAX_OUTPUTS, + QEMU_CAPS_QXL_VGA_MAX_OUTPUTS); + DO_TEST_PARSE_FLAGS_ERROR("missing-machine", VIR_DOMAIN_DEF_PARSE_SKIP_OSTYPE_CHECKS, NONE); diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-video-qxl-heads.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-video-qxl-heads.xml new file mode 100644 index 000000000000..e7b18ab2b2ab --- /dev/null +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-video-qxl-heads.xml @@ -0,0 +1,47 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <disk type='block' device='disk'> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> + </controller> + <controller type='ide' index='0'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> + </controller> + <controller type='pci' index='0' model='pci-root'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <video> + <model type='qxl' ram='65536' vram='65536' vgamem='8192' heads='1' primary='yes'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> + </video> + <video> + <model type='qxl' ram='65536' vram='32768' vgamem='8192' heads='3'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> + </video> + <video> + <model type='qxl' ram='65536' vram='65536' vgamem='8192' heads='7'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> + </video> + <memballoon model='virtio'> + <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> + </memballoon> + </devices> +</domain> diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index 07356777b1c2..cc1b07b82478 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -761,6 +761,8 @@ mymain(void) DO_TEST("virtio-input"); DO_TEST("virtio-input-passthrough"); + DO_TEST("video-qxl-heads"); + qemuTestDriverFree(&driver); return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE; -- 2.7.3
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Martin Kletzander