[libvirt] [PATCH v2] qemu: Support ram bar size for qxl devices
Eric Blake
eblake at redhat.com
Tue Jan 22 17:36:59 UTC 2013
On 01/18/2013 11:36 AM, Alon Levy wrote:
> Adds a "ram" attribute globally to the video.model element, that changes
> the resulting qemu command line only if video.type == "qxl".
>
> <video>
> <model type='qxl' ram='65536' vram='65536' heads='1'/>
> </video>
>
> That attribute gets a default value of 64*1024. The schema is unchanged
> for other video element types.
>
> The resulting qemu command line change is the addition of
>
> -global qxl-vga.ram_size=<ram>*1024
>
> or
>
> -global qxl.ram_size=<ram>*1024
>
> For the main and secondary qxl devices respectively.
>
> The default for the qxl ram bar is 64*1024 kilobytes (the same as the
> default qxl vram bar size).
> ---
> changes from v1:
> renamed attribute to ram (Eric Blake)
> fixes as given by Eric Blake
>
> Did not add any of the suggestions that Gerd made, I think it can be done in a
> separate patch and there was no discussion on it yet.
Fair enough.
> +++ b/docs/formatdomain.html.in
> @@ -3565,7 +3565,10 @@ qemu-kvm -net nic,model=? /dev/null
> video device in domain xml is the primary one, but the optional
> attribute <code>primary</code> (<span class="since">since 1.0.2</span>)
> with value 'yes' can be used to mark the primary in cases of mutiple
> - video device. The non-primary must be type of "qxl".
> + video device. The non-primary must be type of "qxl". The optional
> + attribute <code>ram</code> is allowed for "qxl" type only and specify
s/specify/specifies/ (I'm also adding a since 1.0.2 notation).
> + the size of the primary bar, while <code>vram</code> specifies the
> + secondary bar size. If "ram" is not supplied a default value is used.
> </dd>
>
> <element name="video">
> <optional>
> - <element name="model">
> - <attribute name="type">
> - <choice>
> - <value>vga</value>
> - <value>cirrus</value>
> - <value>vmvga</value>
> - <value>xen</value>
> - <value>vbox</value>
> - <value>qxl</value>
> - </choice>
> - </attribute>
> + <element name="model">
Spurious indentation change here.
> @@ -7431,6 +7433,18 @@ virDomainVideoDefParseXML(const xmlNodePtr node,
> }
> }
>
> + if (ram) {
> + if (virStrToLong_ui(ram, NULL, 10, &def->ram) < 0) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
This shouldn't be internal error (I know, you were just copying and
pasting).
> + _("cannot parse video ram '%s'"), ram);
> + goto error;
> + }
Missing a check that def->type is qxl (the check is necessary to match
the RNG schema).
> +++ b/src/conf/domain_conf.h
> @@ -1157,7 +1157,8 @@ struct _virDomainVideoAccelDef {
>
> struct _virDomainVideoDef {
> int type;
> - unsigned int vram;
> + unsigned int ram; /* kilobytes */
> + unsigned int vram; /* kilobytes */
Technically, kilobytes is 1000, kibibytes is 1024; and this is in units
of 1024.
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args
> @@ -5,5 +5,5 @@ unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb -hda \
> x509-dir=/etc/pki/libvirt-spice,\
> image-compression=auto_glz,jpeg-wan-compression=auto,zlib-glz-wan-compression=auto,\
> playback-compression=on,streaming-video=filter -vga \
> -qxl -global qxl.vram_size=18874368 -device qxl,id=video1,vram_size=33554432,bus=pci.0,addr=0x4 \
> +qxl -global qxl.ram_size=67108864 -global qxl.vram_size=18874368 -device qxl,id=video1,ram_size=67108864,vram_size=33554432,bus=pci.0,addr=0x4 \
Still a long line.
ACK with the following squashed in, so I pushed:
diff --git i/docs/formatdomain.html.in w/docs/formatdomain.html.in
index 370de99..600065d 100644
--- i/docs/formatdomain.html.in
+++ w/docs/formatdomain.html.in
@@ -3566,7 +3566,8 @@ qemu-kvm -net nic,model=? /dev/null
attribute <code>primary</code> (<span class="since">since
1.0.2</span>)
with value 'yes' can be used to mark the primary in cases of
mutiple
video device. The non-primary must be type of "qxl". The optional
- attribute <code>ram</code> is allowed for "qxl" type only and
specify
+ attribute <code>ram</code> (<span class="since">since
+ 1.0.2</span>) is allowed for "qxl" type only and specifies
the size of the primary bar, while <code>vram</code> specifies the
secondary bar size. If "ram" is not supplied a default value
is used.
</dd>
diff --git i/docs/schemas/domaincommon.rng w/docs/schemas/domaincommon.rng
index 6aca97a..7f3320e 100644
--- i/docs/schemas/domaincommon.rng
+++ w/docs/schemas/domaincommon.rng
@@ -2257,7 +2257,7 @@
<define name="video">
<element name="video">
<optional>
- <element name="model">
+ <element name="model">
<choice>
<attribute name="type">
<choice>
diff --git i/src/conf/domain_conf.c w/src/conf/domain_conf.c
index 1925351..cc68bc5 100644
--- i/src/conf/domain_conf.c
+++ w/src/conf/domain_conf.c
@@ -7434,20 +7434,23 @@ virDomainVideoDefParseXML(const xmlNodePtr node,
}
if (ram) {
+ if (def->type != VIR_DOMAIN_VIDEO_TYPE_QXL) {
+ virReportError(VIR_ERR_XML_ERROR, "%s",
+ _("ram attribute only supported for type of
qxl"));
+ goto error;
+ }
if (virStrToLong_ui(ram, NULL, 10, &def->ram) < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
+ virReportError(VIR_ERR_XML_ERROR,
_("cannot parse video ram '%s'"), ram);
goto error;
}
- } else {
- if (def->type == VIR_DOMAIN_VIDEO_TYPE_QXL) {
- def->ram = virDomainVideoDefaultRAM(dom, def->type);
- }
+ } else if (def->type == VIR_DOMAIN_VIDEO_TYPE_QXL) {
+ def->ram = virDomainVideoDefaultRAM(dom, def->type);
}
if (vram) {
if (virStrToLong_ui(vram, NULL, 10, &def->vram) < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
+ virReportError(VIR_ERR_XML_ERROR,
_("cannot parse video ram '%s'"), vram);
goto error;
}
diff --git i/src/conf/domain_conf.h w/src/conf/domain_conf.h
index d05617e..abbfe86 100644
--- i/src/conf/domain_conf.h
+++ w/src/conf/domain_conf.h
@@ -1,7 +1,7 @@
/*
* domain_conf.h: domain XML processing
*
- * Copyright (C) 2006-2012 Red Hat, Inc.
+ * Copyright (C) 2006-2013 Red Hat, Inc.
* Copyright (C) 2006-2008 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
@@ -1157,8 +1157,8 @@ struct _virDomainVideoAccelDef {
struct _virDomainVideoDef {
int type;
- unsigned int ram; /* kilobytes */
- unsigned int vram; /* kilobytes */
+ unsigned int ram; /* kibibytes (multiples of 1024) */
+ unsigned int vram; /* kibibytes (multiples of 1024) */
unsigned int heads;
bool primary;
virDomainVideoAccelDefPtr accel;
diff --git
i/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args
w/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args
index 2f537df..59f064b 100644
--- i/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args
+++ w/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args
@@ -3,7 +3,9 @@ LC_ALL=C PATH=/bin HOME=/home/test USER=test
LOGNAME=test QEMU_AUDIO_DRV=spice \
unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb -hda \
/dev/HostVG/QEMUGuest1 -spice port=5903,tls-port=5904,addr=127.0.0.1,\
x509-dir=/etc/pki/libvirt-spice,\
-image-compression=auto_glz,jpeg-wan-compression=auto,zlib-glz-wan-compression=auto,\
+image-compression=auto_glz,jpeg-wan-compression=auto,\
+zlib-glz-wan-compression=auto,\
playback-compression=on,streaming-video=filter -vga \
-qxl -global qxl.ram_size=67108864 -global qxl.vram_size=18874368
-device
qxl,id=video1,ram_size=67108864,vram_size=33554432,bus=pci.0,addr=0x4 \
+qxl -global qxl.ram_size=67108864 -global qxl.vram_size=18874368 \
+-device
qxl,id=video1,ram_size=67108864,vram_size=33554432,bus=pci.0,addr=0x4 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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