[libvirt] [v2] qemu: Support vram for video of qxl type
Daniel P. Berrange
berrange at redhat.com
Fri Mar 4 11:40:22 UTC 2011
On Mon, Feb 21, 2011 at 09:43:30PM +0800, Osier Yang wrote:
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index e7c3409..db8c8da 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -4164,6 +4164,10 @@ virDomainVideoDefaultRAM(virDomainDefPtr def,
> /* Original Xen PVFB hardcoded to 4 MB */
> return 4 * 1024;
>
> + case VIR_DOMAIN_VIDEO_TYPE_QXL:
> + /* QEMU uses 16M as the minimal video memory for qxl device */
> + return 16 * 1024;
> +
It is 64 MB actually.
# qemu-kvm -vga qxl -monitor stdio
(qemu) info qtree
....
dev: qxl-vga, id ""
dev-prop: ram_size = 67108864
dev-prop: vram_size = 67108864
....
> default:
> return 0;
> }
> diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
> index 5f08a20..cce6b5f 100644
> --- a/src/qemu/qemu_capabilities.c
> +++ b/src/qemu/qemu_capabilities.c
> @@ -1118,6 +1118,8 @@ qemuCapsParseDeviceStr(const char *str, unsigned long long *flags)
> }
> if (strstr(str, "virtio-net-pci.tx="))
> *flags |= QEMUD_CMD_FLAG_VIRTIO_TX_ALG;
> + if (strstr(str, "name \"qxl-vga\""))
> + *flags |= QEMUD_CMD_FLAG_DEVICE_QXL_VGA;
>
> return 0;
> }
> diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
> index 63cbbb3..f36c3ab 100644
> --- a/src/qemu/qemu_capabilities.h
> +++ b/src/qemu/qemu_capabilities.h
> @@ -93,6 +93,7 @@ enum qemuCapsFlags {
> QEMUD_CMD_FLAG_CHARDEV_SPICEVMC = (1LL << 56), /* newer -chardev spicevmc */
> QEMUD_CMD_FLAG_DEVICE_SPICEVMC = (1LL << 57), /* older -device spicevmc*/
> QEMUD_CMD_FLAG_VIRTIO_TX_ALG = (1LL << 58), /* -device virtio-net-pci,tx=string */
> + QEMUD_CMD_FLAG_DEVICE_QXL_VGA = (1LL << 59), /* Is the primary and vga compatible qxl device named qxl-vga? */
> };
>
> virCapsPtr qemuCapsInit(virCapsPtr old_caps);
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index 0db2843..f2709f5 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -1914,7 +1914,8 @@ error:
> }
>
> static char *
> -qemuBuildVideoDevStr(virDomainVideoDefPtr video,
> +qemuBuildVideoDevStr(virDomainDefPtr def,
> + virDomainVideoDefPtr video,
> unsigned long long qemuCmdFlags)
> {
> virBuffer buf = VIR_BUFFER_INITIALIZER;
> @@ -1928,6 +1929,15 @@ qemuBuildVideoDevStr(virDomainVideoDefPtr video,
>
> virBufferVSprintf(&buf, "%s", model);
> virBufferVSprintf(&buf, ",id=%s", video->info.alias);
> +
> + if (video->type == VIR_DOMAIN_VIDEO_TYPE_QXL) {
> + if (!video->vram)
> + video->vram = virDomainVideoDefaultRAM(def, video->type);
Actually, the XML parser already calls this, so all that was needed
was the 'case VIR_DOMAIN_VIDEO_TYPE_QXL' that you added earlier.
> +
> + /* QEMU accepts bytes for vram_size. */
> + virBufferVSprintf(&buf, ",vram_size=%u", video->vram * 1024);
> + }
> +
> if (qemuBuildDeviceAddressStr(&buf, &video->info, qemuCmdFlags) < 0)
> goto error;
>
> @@ -4023,6 +4033,18 @@ qemuBuildCommandLine(virConnectPtr conn,
If those two changes are made, then this is fine.
Daniel
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