[libvirt] [PATCH 1/2] Add support for preallocated memory - parse xml
Jaroslav Safka
jaroslavx.safka at intel.com
Thu Jun 23 12:25:28 UTC 2016
Add three new elements in memoryBacking and
enable their parsing.
(without converting to argv yet)
<memoryBacking>
<source type="file|anonymous"/>
<access Mode="shared|private"/>
<allocation mode="immediate|ondemand"/>
</memoryBacking>
---
docs/schemas/domaincommon.rng | 45 +++++++++++++++++
src/conf/domain_conf.c | 59 +++++++++++++++++++++-
src/conf/domain_conf.h | 31 ++++++++++++
.../qemuxml2argv-memorybacking-set.args | 22 ++++++++
.../qemuxml2argv-memorybacking-set.xml | 32 ++++++++++++
.../qemuxml2argv-memorybacking-unset.args | 22 ++++++++
.../qemuxml2argv-memorybacking-unset.xml | 32 ++++++++++++
.../qemuxml2xmlout-memorybacking-set.xml | 40 +++++++++++++++
.../qemuxml2xmlout-memorybacking-unset.xml | 40 +++++++++++++++
tests/qemuxml2xmltest.c | 3 ++
10 files changed, 325 insertions(+), 1 deletion(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.xml
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-set.xml
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-unset.xml
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 162c2e0..b1bdcc7 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -546,6 +546,27 @@
<empty/>
</element>
</optional>
+ <optional>
+ <element name="source">
+ <attribute name="type">
+ <ref name="mbSourceType"/>
+ </attribute>
+ </element>
+ </optional>
+ <optional>
+ <element name="access">
+ <attribute name="mode">
+ <ref name="mbAccessMode"/>
+ </attribute>
+ </element>
+ </optional>
+ <optional>
+ <element name="allocation">
+ <attribute name="mode">
+ <ref name="mbAllocMode"/>
+ </attribute>
+ </element>
+ </optional>
</interleave>
</element>
</optional>
@@ -5597,4 +5618,28 @@
</choice>
</attribute>
</define>
+ <define name="mbSourceType">
+ <attribute name="sourcetype">
+ <choice>
+ <value>file</value>
+ <value>anonymous</value>
+ </choice>
+ </attribute>
+ </define>
+ <define name="mbAccessMode">
+ <attribute name="accessmode">
+ <choice>
+ <value>shared</value>
+ <value>private</value>
+ </choice>
+ </attribute>
+ </define>
+ <define name="mbAllocMode">
+ <attribute name="allocmode">
+ <choice>
+ <value>immediate</value>
+ <value>ondemand</value>
+ </choice>
+ </attribute>
+ </define>
</grammar>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 9443281..c4fc886 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -819,6 +819,21 @@ VIR_ENUM_IMPL(virDomainDiskMirrorState, VIR_DOMAIN_DISK_MIRROR_STATE_LAST,
"abort",
"pivot")
+VIR_ENUM_IMPL(virDomainMemorySource, VIR_DOMAIN_MEMORY_SOURCE_LAST,
+ "none",
+ "file",
+ "anonymous")
+
+VIR_ENUM_IMPL(virDomainMemoryAccess, VIR_DOMAIN_MEMORY_ACCESS_LAST,
+ "none",
+ "shared",
+ "private")
+
+VIR_ENUM_IMPL(virDomainMemoryAllocation, VIR_DOMAIN_MEMORY_ALLOCATION_LAST,
+ "none",
+ "immediate",
+ "ondemand")
+
VIR_ENUM_IMPL(virDomainLoader,
VIR_DOMAIN_LOADER_TYPE_LAST,
"rom",
@@ -15943,6 +15958,36 @@ virDomainDefParseXML(xmlDocPtr xml,
if (virXPathBoolean("boolean(./memoryBacking/locked)", ctxt))
def->mem.locked = true;
+ tmp = virXPathString("string(./memoryBacking/source/@type)", ctxt);
+ if (tmp) {
+ if ((def->mem.source = virDomainMemorySourceTypeFromString(tmp)) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unknown memoryBacking/source/type '%s'"), tmp);
+ goto error;
+ }
+ VIR_FREE(tmp);
+ }
+
+ tmp = virXPathString("string(./memoryBacking/access/@mode)", ctxt);
+ if (tmp) {
+ if ((def->mem.access = virDomainMemoryAccessTypeFromString(tmp)) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unknown memoryBacking/access/mode '%s'"), tmp);
+ goto error;
+ }
+ VIR_FREE(tmp);
+ }
+
+ tmp = virXPathString("string(./memoryBacking/allocation/@mode)", ctxt);
+ if (tmp) {
+ if ((def->mem.allocation = virDomainMemoryAllocationTypeFromString(tmp)) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unknown memoryBacking/allocation/mode '%s'"), tmp);
+ goto error;
+ }
+ VIR_FREE(tmp);
+ }
+
/* Extract blkio cgroup tunables */
if (virXPathUInt("string(./blkiotune/weight)", ctxt,
&def->blkio.weight) < 0)
@@ -22970,7 +23015,9 @@ virDomainDefFormatInternal(virDomainDefPtr def,
virBufferAddLit(buf, "</memtune>\n");
}
- if (def->mem.nhugepages || def->mem.nosharepages || def->mem.locked) {
+ if (def->mem.nhugepages || def->mem.nosharepages || def->mem.locked
+ || def->mem.source || def->mem.access || def->mem.allocation)
+ {
virBufferAddLit(buf, "<memoryBacking>\n");
virBufferAdjustIndent(buf, 2);
if (def->mem.nhugepages)
@@ -22979,6 +23026,16 @@ virDomainDefFormatInternal(virDomainDefPtr def,
virBufferAddLit(buf, "<nosharepages/>\n");
if (def->mem.locked)
virBufferAddLit(buf, "<locked/>\n");
+ if (def->mem.source)
+ virBufferAsprintf(buf, "<source type='%s'/>\n",
+ virDomainMemorySourceTypeToString(def->mem.source));
+ if (def->mem.access)
+ virBufferAsprintf(buf, "<access mode='%s'/>\n",
+ virDomainMemoryAccessTypeToString(def->mem.access));
+ if (def->mem.allocation)
+ virBufferAsprintf(buf, "<allocation mode='%s'/>\n",
+ virDomainMemoryAllocationTypeToString(def->mem.allocation));
+
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</memoryBacking>\n");
}
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 6e81e52..8dd8a93 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -565,6 +565,30 @@ typedef enum {
VIR_DOMAIN_DISK_MIRROR_STATE_LAST
} virDomainDiskMirrorState;
+typedef enum {
+ VIR_DOMAIN_MEMORY_SOURCE_NONE = 0, /* No memory source defined */
+ VIR_DOMAIN_MEMORY_SOURCE_FILE, /* Memory source is set as file */
+ VIR_DOMAIN_MEMORY_SOURCE_ANONYMOUS, /* Memory source is set as anonymous */
+
+ VIR_DOMAIN_MEMORY_SOURCE_LAST,
+} virDomainMemorySource;
+
+typedef enum {
+ VIR_DOMAIN_MEMORY_ACCESS_NONE = 0, /* No memory access defined */
+ VIR_DOMAIN_MEMORY_ACCESS_SHARED, /* Memory access is set as shared */
+ VIR_DOMAIN_MEMORY_ACCESS_PRIVATE, /* Memory access is set as private */
+
+ VIR_DOMAIN_MEMORY_ACCESS_LAST,
+} virDomainMemoryAccess;
+
+typedef enum {
+ VIR_DOMAIN_MEMORY_ALLOCATION_NONE = 0, /* No memory allocation defined */
+ VIR_DOMAIN_MEMORY_ALLOCATION_IMMEDIATE, /* Memory allocation is set as immediate */
+ VIR_DOMAIN_MEMORY_ALLOCATION_ONDEMAND, /* Memory allocation is set as ondemand */
+
+ VIR_DOMAIN_MEMORY_ALLOCATION_LAST,
+} virDomainMemoryAllocation;
+
/* Stores the virtual disk configuration */
struct _virDomainDiskDef {
@@ -2087,6 +2111,10 @@ struct _virDomainMemtune {
unsigned long long soft_limit; /* in kibibytes, limit at off_t bytes */
unsigned long long min_guarantee; /* in kibibytes, limit at off_t bytes */
unsigned long long swap_hard_limit; /* in kibibytes, limit at off_t bytes */
+
+ int source; /* enum virDomainMemorySource */
+ int access; /* enum virDomainMemoryAccess */
+ int allocation; /* enum virDomainMemoryAllocation */
};
typedef struct _virDomainPowerManagement virDomainPowerManagement;
@@ -3006,6 +3034,9 @@ VIR_ENUM_DECL(virDomainTPMModel)
VIR_ENUM_DECL(virDomainTPMBackend)
VIR_ENUM_DECL(virDomainMemoryModel)
VIR_ENUM_DECL(virDomainMemoryBackingModel)
+VIR_ENUM_DECL(virDomainMemorySource)
+VIR_ENUM_DECL(virDomainMemoryAccess)
+VIR_ENUM_DECL(virDomainMemoryAllocation)
/* from libvirt.h */
VIR_ENUM_DECL(virDomainState)
VIR_ENUM_DECL(virDomainNostateReason)
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.args b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.args
new file mode 100644
index 0000000..bb702dc
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.args
@@ -0,0 +1,22 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name SomeDummyHugepagesGuest \
+-S \
+-M pc \
+-m 1024 \
+-smp 2 \
+-uuid ef1bdff4-27f3-4e85-a807-5fb4d58463cc \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-SomeDummyHugepagesGu/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 virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.xml b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.xml
new file mode 100644
index 0000000..655eb8d
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-set.xml
@@ -0,0 +1,32 @@
+<domain type='qemu'>
+ <name>SomeDummyHugepagesGuest</name>
+ <uuid>ef1bdff4-27f3-4e85-a807-5fb4d58463cc</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <memoryBacking>
+ <source type='file'/>
+ <access mode='shared'/>
+ <allocation mode='immediate'/>
+ </memoryBacking>
+ <vcpu placement='static'>2</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'/>
+ <controller type='ide' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.args b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.args
new file mode 100644
index 0000000..bb702dc
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.args
@@ -0,0 +1,22 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name SomeDummyHugepagesGuest \
+-S \
+-M pc \
+-m 1024 \
+-smp 2 \
+-uuid ef1bdff4-27f3-4e85-a807-5fb4d58463cc \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-SomeDummyHugepagesGu/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 virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.xml b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.xml
new file mode 100644
index 0000000..74f8a12
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memorybacking-unset.xml
@@ -0,0 +1,32 @@
+<domain type='qemu'>
+ <name>SomeDummyHugepagesGuest</name>
+ <uuid>ef1bdff4-27f3-4e85-a807-5fb4d58463cc</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <memoryBacking>
+ <source type="anonymous"/>
+ <access mode="private"/>
+ <allocation mode="ondemand"/>
+ </memoryBacking>
+ <vcpu placement='static'>2</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'/>
+ <controller type='ide' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-set.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-set.xml
new file mode 100644
index 0000000..f63ae38
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-set.xml
@@ -0,0 +1,40 @@
+<domain type='qemu'>
+ <name>SomeDummyHugepagesGuest</name>
+ <uuid>ef1bdff4-27f3-4e85-a807-5fb4d58463cc</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <memoryBacking>
+ <source type='file'/>
+ <access mode='shared'/>
+ <allocation mode='immediate'/>
+ </memoryBacking>
+ <vcpu placement='static'>2</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'/>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-unset.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-unset.xml
new file mode 100644
index 0000000..7de9ffb
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-memorybacking-unset.xml
@@ -0,0 +1,40 @@
+<domain type='qemu'>
+ <name>SomeDummyHugepagesGuest</name>
+ <uuid>ef1bdff4-27f3-4e85-a807-5fb4d58463cc</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <memoryBacking>
+ <source type='anonymous'/>
+ <access mode='private'/>
+ <allocation mode='ondemand'/>
+ </memoryBacking>
+ <vcpu placement='static'>2</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'/>
+ <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 7db9cb7..5adf1a7 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -822,6 +822,9 @@ mymain(void)
DO_TEST("virtio-input");
DO_TEST("virtio-input-passthrough");
+ DO_TEST("memorybacking-set");
+ DO_TEST("memorybacking-unset");
+
virObjectUnref(cfg);
DO_TEST("acpi-table");
--
2.1.0
--------------------------------------------------------------
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