Re: [libvirt] [PATCH v3] qemu: Use heads parameter for QXL driver

Allows to specify maximum number of head to QXL driver. The patch to support the "max_outputs" in Qemu is still not merged but I got agreement on the name of the argument.

Actually can be a compatiblity problem as heads in the XML configuration was set by default to '1'. Signed-off-by: Frediano Ziglio <fziglio(a)redhat.com&gt; --- src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 5 +++++ 3 files changed, 8 insertions(+) Changes from v2: - removed capability tests (Martin Kletzander) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 27686c3..68060cd 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -287,6 +287,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST, "aarch64-off", "vhost-user-multiqueue", /* 190 */ + "qxl-vga.max_outputs", ); @@ -1649,6 +1650,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQxl[] = { static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQxlVga[] = { { "vgamem_mb", QEMU_CAPS_QXL_VGA_VGAMEM }, + { "max_outputs", QEMU_CAPS_QXL_VGA_MAX_OUTPUTS }, }; struct virQEMUCapsObjectTypeProps { diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index 30aa504..02f9e81 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -230,6 +230,7 @@ typedef enum { QEMU_CAPS_DEVICE_PCI_SERIAL = 188, /* -device pci-serial */ QEMU_CAPS_CPU_AARCH64_OFF = 189, /* -cpu ...,aarch64=off */ QEMU_CAPS_VHOSTUSER_MULTIQUEUE = 190, /* vhost-user with -netdev queues= */ + QEMU_CAPS_QXL_VGA_MAX_OUTPUTS = 191, /* qxl-vga.max_outputs */ QEMU_CAPS_LAST, /* this must always be the last item */ } virQEMUCapsFlags; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 25a7bc6..59666e7 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -5661,6 +5661,11 @@ qemuBuildDeviceVideoStr(virDomainDefPtr def, /* QEMU accepts mebibytes for vgamem_mb. */ virBufferAsprintf(&buf, ",vgamem_mb=%u", video->vgamem / 1024); } + + if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_QXL_VGA_MAX_OUTPUTS) && + video->heads > 0) { + virBufferAsprintf(&buf, ",max_outputs=%u", video->heads); + }

} else if (video->vram && ((video->type == VIR_DOMAIN_VIDEO_TYPE_VGA && virQEMUCapsGet(qemuCaps, QEMU_CAPS_VGA_VGAMEM)) || -- 2.1.0