[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>
---
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