[libvirt] [PATCH V3 5/6] xenconfig: support bios=ovmf xl.cfg
Michal Privoznik
mprivozn at redhat.com
Mon Jun 13 09:33:18 UTC 2016
On 11.06.2016 00:34, Jim Fehlig wrote:
> Add support to xenconfig for conversion of xl.cfg(5) bios config
> to/from libvirt domXml <loader> config. SeaBIOS is the default
> for HVM guests using upstream QEMU. ROMBIOS is the default when
> using the old qemu-dm. This patch allows specifying OVMF as an
> alternate firmware.
>
> Example xl.cfg:
> bios = "ovmf"
>
> Example domXML:
> <os>
> ...
> <loader readonly='yes' type='pflash'>/usr/lib/xen/boot/ovmf.bin</loader>
> </os>
>
> Note that currently Xen does not support a separate nvram for
> non-volatile variables.
>
> Signed-off-by: Jim Fehlig <jfehlig at suse.com>
> ---
>
> V3:
> - Rework test code to account for discovery of LIBXL_FIRMWARE_DIR
> at build time
> - Drop code that relies on Xen patches that are not yet committed
> to xen.git master
>
> src/Makefile.am | 2 +-
> src/xenconfig/xen_xl.c | 37 ++++++++++---
> tests/testutils.c | 16 ++++++
> tests/testutils.h | 2 +
> tests/xlconfigdata/test-fullvirt-ovmf.cfg | 26 +++++++++
> tests/xlconfigdata/test-fullvirt-ovmf.xml | 58 ++++++++++++++++++++
> tests/xlconfigtest.c | 90 +++++++++++++++++++++++--------
> 7 files changed, 202 insertions(+), 29 deletions(-)
>
> diff --git a/src/Makefile.am b/src/Makefile.am
> index 7004d14..1aff57d 100644
> --- a/src/Makefile.am
> +++ b/src/Makefile.am
> @@ -1151,7 +1151,7 @@ noinst_LTLIBRARIES += libvirt_xenconfig.la
> libvirt_la_BUILT_LIBADD += libvirt_xenconfig.la
> libvirt_xenconfig_la_LIBADD = $(LIBXL_LIBS)
> libvirt_xenconfig_la_CFLAGS = \
> - -I$(srcdir)/conf $(AM_CFLAGS)
> + -I$(srcdir)/conf -I$(srcdir)/libxl $(AM_CFLAGS)
> libvirt_xenconfig_la_SOURCES = $(XENCONFIG_SOURCES)
> endif WITH_XENCONFIG
>
> diff --git a/src/xenconfig/xen_xl.c b/src/xenconfig/xen_xl.c
> index 9b8306f..dc54a73 100644
> --- a/src/xenconfig/xen_xl.c
> +++ b/src/xenconfig/xen_xl.c
> @@ -33,6 +33,7 @@
> #include "virstring.h"
> #include "virstoragefile.h"
> #include "xen_xl.h"
> +#include "libxl_capabilities.h"
>
> #define VIR_FROM_THIS VIR_FROM_XENXL
>
> @@ -103,15 +104,31 @@ xenParseXLOS(virConfPtr conf, virDomainDefPtr def, virCapsPtr caps)
> size_t i;
>
> if (def->os.type == VIR_DOMAIN_OSTYPE_HVM) {
> + const char *bios;
> const char *boot;
>
> - for (i = 0; i < caps->nguests; i++) {
> - if (caps->guests[i]->ostype == VIR_DOMAIN_OSTYPE_HVM &&
> - caps->guests[i]->arch.id == def->os.arch) {
> - if (VIR_ALLOC(def->os.loader) < 0 ||
> - VIR_STRDUP(def->os.loader->path,
> - caps->guests[i]->arch.defaultInfo.loader) < 0)
> - return -1;
> + if (xenConfigGetString(conf, "bios", &bios, NULL) < 0)
> + return -1;
> +
> + if (bios && STREQ(bios, "ovmf")) {
> + if (VIR_ALLOC(def->os.loader) < 0)
> + return -1;
> +
> + def->os.loader->type = VIR_DOMAIN_LOADER_TYPE_PFLASH;
> + def->os.loader->readonly = VIR_TRISTATE_BOOL_YES;
> +
> + if (VIR_STRDUP(def->os.loader->path,
> + LIBXL_FIRMWARE_DIR "/ovmf.bin") < 0)
> + return -1;
> + } else {
> + for (i = 0; i < caps->nguests; i++) {
> + if (caps->guests[i]->ostype == VIR_DOMAIN_OSTYPE_HVM &&
> + caps->guests[i]->arch.id == def->os.arch) {
> + if (VIR_ALLOC(def->os.loader) < 0 ||
> + VIR_STRDUP(def->os.loader->path,
> + caps->guests[i]->arch.defaultInfo.loader) < 0)
> + return -1;
> + }
> }
> }
>
> @@ -535,6 +552,12 @@ xenFormatXLOS(virConfPtr conf, virDomainDefPtr def)
> if (xenConfigSetString(conf, "builder", "hvm") < 0)
> return -1;
>
> + if (def->os.loader &&
> + def->os.loader->type == VIR_DOMAIN_LOADER_TYPE_PFLASH) {
> + if (xenConfigSetString(conf, "bios", "ovmf") < 0)
> + return -1;
> + }
> +
> #ifdef LIBXL_HAVE_BUILDINFO_KERNEL
> if (def->os.kernel &&
> xenConfigSetString(conf, "kernel", def->os.kernel) < 0)
> diff --git a/tests/testutils.c b/tests/testutils.c
> index e2dd2fe..54adab2 100644
> --- a/tests/testutils.c
> +++ b/tests/testutils.c
> @@ -718,6 +718,22 @@ virTestCompareToFile(const char *strcontent,
> return ret;
> }
>
> +/*
> + * @param strcontent: String input content
> + * @param strsrc: String source to compare strcontent against
> + */
> +int
> +virTestCompareToString(const char *strcontent,
> + const char *strsrc)
> +{
> + if (STRNEQ_NULLABLE(strcontent, strsrc)) {
> + virTestDifference(stderr, strcontent, strsrc);
> + return -1;
> + }
> +
> + return 0;
> +}
> +
> static void
> virTestErrorFuncQuiet(void *data ATTRIBUTE_UNUSED,
> virErrorPtr err ATTRIBUTE_UNUSED)
> diff --git a/tests/testutils.h b/tests/testutils.h
> index e3881e8..c7c641c 100644
> --- a/tests/testutils.h
> +++ b/tests/testutils.h
> @@ -75,6 +75,8 @@ int virTestDifferenceBin(FILE *stream,
> size_t length);
> int virTestCompareToFile(const char *strcontent,
> const char *filename);
> +int virTestCompareToString(const char *strcontent,
> + const char *strsrc);
>
> unsigned int virTestGetDebug(void);
> unsigned int virTestGetVerbose(void);
> diff --git a/tests/xlconfigdata/test-fullvirt-ovmf.cfg b/tests/xlconfigdata/test-fullvirt-ovmf.cfg
> new file mode 100644
> index 0000000..b08e7fd
> --- /dev/null
> +++ b/tests/xlconfigdata/test-fullvirt-ovmf.cfg
> @@ -0,0 +1,26 @@
> +name = "XenGuest2"
> +uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
> +maxmem = 579
> +memory = 394
> +vcpus = 1
> +pae = 1
> +acpi = 1
> +apic = 1
> +viridian = 0
> +rtc_timeoffset = 0
> +localtime = 0
> +on_poweroff = "destroy"
> +on_reboot = "restart"
> +on_crash = "restart"
> +device_model = "/usr/lib/xen/bin/qemu-system-i386"
> +sdl = 0
> +vnc = 1
> +vncunused = 1
> +vnclisten = "127.0.0.1"
> +vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge,model=e1000" ]
> +parallel = "none"
> +serial = "none"
> +builder = "hvm"
> +bios = "ovmf"
> +boot = "d"
> +disk = [ "format=raw,vdev=hda,access=rw,backendtype=phy,target=/dev/HostVG/XenGuest2", "format=qcow2,vdev=hdb,access=rw,backendtype=qdisk,target=/var/lib/libvirt/images/XenGuest2-home", "format=raw,vdev=hdc,access=ro,backendtype=qdisk,devtype=cdrom,target=/root/boot.iso" ]
> diff --git a/tests/xlconfigdata/test-fullvirt-ovmf.xml b/tests/xlconfigdata/test-fullvirt-ovmf.xml
> new file mode 100644
> index 0000000..ca902e6
> --- /dev/null
> +++ b/tests/xlconfigdata/test-fullvirt-ovmf.xml
> @@ -0,0 +1,58 @@
> +<domain type='xen'>
> + <name>XenGuest2</name>
> + <uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
> + <memory unit='KiB'>592896</memory>
> + <currentMemory unit='KiB'>403456</currentMemory>
> + <vcpu placement='static'>1</vcpu>
> + <os>
> + <type arch='x86_64' machine='xenfv'>hvm</type>
> + <loader readonly='yes' type='pflash'>/LIBXL_FIRMWARE_DIR/ovmf.bin</loader>
> + <boot dev='cdrom'/>
> + </os>
> + <features>
> + <acpi/>
> + <apic/>
> + <pae/>
> + </features>
> + <clock offset='variable' adjustment='0' basis='utc'/>
> + <on_poweroff>destroy</on_poweroff>
> + <on_reboot>restart</on_reboot>
> + <on_crash>restart</on_crash>
> + <devices>
> + <emulator>/usr/lib/xen/bin/qemu-system-i386</emulator>
> + <disk type='block' device='disk'>
> + <driver name='phy' type='raw'/>
> + <source dev='/dev/HostVG/XenGuest2'/>
> + <target dev='hda' bus='ide'/>
> + <address type='drive' controller='0' bus='0' target='0' unit='0'/>
> + </disk>
> + <disk type='file' device='disk'>
> + <driver name='qemu' type='qcow2'/>
> + <source file='/var/lib/libvirt/images/XenGuest2-home'/>
> + <target dev='hdb' bus='ide'/>
> + <address type='drive' controller='0' bus='0' target='0' unit='1'/>
> + </disk>
> + <disk type='file' device='cdrom'>
> + <driver name='qemu' type='raw'/>
> + <source file='/root/boot.iso'/>
> + <target dev='hdc' bus='ide'/>
> + <readonly/>
> + <address type='drive' controller='0' bus='1' target='0' unit='0'/>
> + </disk>
> + <controller type='ide' index='0'/>
> + <interface type='bridge'>
> + <mac address='00:16:3e:66:92:9c'/>
> + <source bridge='xenbr1'/>
> + <script path='vif-bridge'/>
> + <model type='e1000'/>
> + </interface>
> + <input type='mouse' bus='ps2'/>
> + <input type='keyboard' bus='ps2'/>
> + <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'>
> + <listen type='address' address='127.0.0.1'/>
> + </graphics>
> + <video>
> + <model type='cirrus' vram='8192' heads='1' primary='yes'/>
> + </video>
> + </devices>
> +</domain>
> diff --git a/tests/xlconfigtest.c b/tests/xlconfigtest.c
> index 62bb144..55c756c 100644
> --- a/tests/xlconfigtest.c
> +++ b/tests/xlconfigtest.c
> @@ -43,12 +43,33 @@
> static virCapsPtr caps;
> static virDomainXMLOptionPtr xmlopt;
>
> +
> +/*
> + * This function provides a mechanism to replace variables in test
> + * data files whose values are discovered at built time.
> + */
> +static char *
> +testReplaceVarsXML(const char *xml)
> +{
> + char *xmlcfgData;
> + char *replacedXML;
> +
> + if (virTestLoadFile(xml, &xmlcfgData) < 0)
> + return NULL;
> +
> + replacedXML = virStringReplace(xmlcfgData, "/LIBXL_FIRMWARE_DIR",
> + LIBXL_FIRMWARE_DIR);
I think we want to replace just LIBXL_FW_DIR without the leading slash.
That's what would have been done if we had .in files anyway.
> +
> + VIR_FREE(xmlcfgData);
> + return replacedXML;
> +}
Michal
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