docs/formatdomain.html.in | 4 +++ docs/schemas/domaincommon.rng | 5 +++ src/conf/domain_conf.c | 5 ++- src/conf/domain_conf.h | 1 + src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 26 +++++++++++++++ .../qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args | 25 ++++++++++++++ tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml | 28 ++++++++++++++++ tests/qemuxml2argvtest.c | 1 + .../qemuxml2xmlout-vmcoreinfo.xml | 38 ++++++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 12 files changed, 136 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Starting from qemu 2.11, the `-device vmcoreinfo` will create a fw_cfg
entry for a guest to store dump details, necessary to process kernel
dump with KASLR enabled and providing additional kernel details.
Since the device is a singleton and shouldn't use additional hardware
resources, I decided to map this to a <feature> element in the libvirt
domain XML. Feel free to argue and decide if it is better to have it
under <devices> instead.
The device is arm/x86 only for now (targets that support fw_cfg+dma).
Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1395248
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
docs/formatdomain.html.in | 4 +++
docs/schemas/domaincommon.rng | 5 +++
src/conf/domain_conf.c | 5 ++-
src/conf/domain_conf.h | 1 +
src/qemu/qemu_capabilities.c | 2 ++
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 26 +++++++++++++++
.../qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args | 25 ++++++++++++++
tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml | 28 ++++++++++++++++
tests/qemuxml2argvtest.c | 1 +
.../qemuxml2xmlout-vmcoreinfo.xml | 38 ++++++++++++++++++++++
tests/qemuxml2xmltest.c | 1 +
12 files changed, 136 insertions(+), 1 deletion(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 92e14a919..d87a32a89 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -1878,6 +1878,10 @@
which is also known as a split I/O APIC mode.
<span class="since">Since 3.4.0</span> (QEMU/KVM only)
</dd>
+ <dt><code>vmcoreinfo</code></dt>
+ <dd>Enable QEMU vmcoreinfo device to let the guest kernel save debug
+ details. <span class="since">Since 3.10.0</span> (QEMU only)
+ </dd>
</dl>
<h3><a id="elementsTime">Time keeping</a></h3>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 9cec1a063..86cbe2c8c 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4736,6 +4736,11 @@
<optional>
<ref name="ioapic"/>
</optional>
+ <optional>
+ <element name="vmcoreinfo">
+ <empty/>
+ </element>
+ </optional>
</interleave>
</element>
</optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 400e90032..3a9b56cd2 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -148,7 +148,8 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
"vmport",
"gic",
"smm",
- "ioapic")
+ "ioapic",
+ "vmcoreinfo")
VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, VIR_DOMAIN_CAPABILITIES_POLICY_LAST,
"default",
@@ -18710,6 +18711,7 @@ virDomainDefParseXML(xmlDocPtr xml,
case VIR_DOMAIN_FEATURE_VIRIDIAN:
case VIR_DOMAIN_FEATURE_PRIVNET:
case VIR_DOMAIN_FEATURE_HYPERV:
+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
case VIR_DOMAIN_FEATURE_KVM:
def->features[val] = VIR_TRISTATE_SWITCH_ON;
break;
@@ -26052,6 +26054,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
case VIR_DOMAIN_FEATURE_ACPI:
case VIR_DOMAIN_FEATURE_PAE:
case VIR_DOMAIN_FEATURE_VIRIDIAN:
+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
case VIR_DOMAIN_FEATURE_PRIVNET:
switch ((virTristateSwitch) def->features[i]) {
case VIR_TRISTATE_SWITCH_ABSENT:
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index be38792c6..add668025 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1723,6 +1723,7 @@ typedef enum {
VIR_DOMAIN_FEATURE_GIC,
VIR_DOMAIN_FEATURE_SMM,
VIR_DOMAIN_FEATURE_IOAPIC,
+ VIR_DOMAIN_FEATURE_VMCOREINFO,
VIR_DOMAIN_FEATURE_LAST
} virDomainFeature;
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 7cb091056..44a2833a7 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -443,6 +443,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
/* 270 */
"vxhs",
"virtio-blk.num-queues",
+ "vmcoreinfo",
);
@@ -1670,6 +1671,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
{ "pcie-root-port", QEMU_CAPS_DEVICE_PCIE_ROOT_PORT },
{ "qemu-xhci", QEMU_CAPS_DEVICE_QEMU_XHCI },
{ "spapr-pci-host-bridge", QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE },
+ { "vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBalloon[] = {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index cacc2b77e..0cd9755a8 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -429,6 +429,7 @@ typedef enum {
/* 270 */
QEMU_CAPS_VXHS, /* -drive file.driver=vxhs via query-qmp-schema */
QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES, /* virtio-blk-*.num-queues */
+ QEMU_CAPS_DEVICE_VMCOREINFO, /* -device vmcoreinfo */
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 8708b79ed..b903b27b9 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -9727,6 +9727,29 @@ qemuBuildTPMCommandLine(virCommandPtr cmd,
}
+static int
+qemuBuildVMCoreInfoCommandLine(virCommandPtr cmd,
+ const virDomainDef *def,
+ virQEMUCapsPtr qemuCaps)
+{
+ virTristateSwitch vmci = def->features[VIR_DOMAIN_FEATURE_VMCOREINFO];
+
+ if (vmci != VIR_TRISTATE_SWITCH_ON) {
+ return 0;
+ }
+
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VMCOREINFO)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("vmcoreinfo is not available "
+ "with this QEMU binary"));
+ return -1;
+ }
+
+ virCommandAddArgList(cmd, "-device", "vmcoreinfo", NULL);
+ return 0;
+}
+
+
static int
qemuBuildPanicCommandLine(virCommandPtr cmd,
const virDomainDef *def,
@@ -10146,6 +10169,9 @@ qemuBuildCommandLine(virQEMUDriverPtr driver,
if (qemuBuildNVRAMCommandLine(cmd, def, qemuCaps) < 0)
goto error;
+ if (qemuBuildVMCoreInfoCommandLine(cmd, def, qemuCaps) < 0)
+ goto error;
+
if (snapshot)
virCommandAddArgList(cmd, "-loadvm", snapshot->def->name, NULL);
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
new file mode 100644
index 000000000..772e5a071
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
@@ -0,0 +1,25 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i686 \
+-name QEMUGuest1 \
+-S \
+-M pc \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-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 \
+-device vmcoreinfo
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
new file mode 100644
index 000000000..f8e586531
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
@@ -0,0 +1,28 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <features>
+ <vmcoreinfo/>
+ </features>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 2e07b85aa..7b9b846ef 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2810,6 +2810,7 @@ mymain(void)
DO_TEST_PARSE_ERROR("cpu-cache-emulate-l2", QEMU_CAPS_KVM);
DO_TEST_PARSE_ERROR("cpu-cache-passthrough3", QEMU_CAPS_KVM);
DO_TEST_PARSE_ERROR("cpu-cache-passthrough-l3", QEMU_CAPS_KVM);
+ DO_TEST("vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO);
DO_TEST("user-aliases", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE_CIRRUS_VGA,
QEMU_CAPS_OBJECT_MEMORY_FILE, QEMU_CAPS_PIIX_DISABLE_S3,
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
new file mode 100644
index 000000000..a3922d630
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
@@ -0,0 +1,38 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <features>
+ <vmcoreinfo/>
+ </features>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </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 5a282e5ff..9a7d460e5 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -1260,6 +1260,7 @@ mymain(void)
DO_TEST("cpu-check-default-none2", NONE);
DO_TEST("cpu-check-default-partial", NONE);
DO_TEST("cpu-check-default-partial2", NONE);
+ DO_TEST("vmcoreinfo", NONE);
DO_TEST("smartcard-host", NONE);
DO_TEST("smartcard-host-certificates", NONE);
--
2.15.0.rc0.40.gaefcc5f6f
--
libvir-list mailing list
libvir-list@redhat.com
https://www.redhat.com/mailman/listinfo/libvir-listping, please review/comment
On Mon, Nov 6, 2017 at 1:09 PM, <marcandre.lureau@redhat.com> wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> Starting from qemu 2.11, the `-device vmcoreinfo` will create a fw_cfg
> entry for a guest to store dump details, necessary to process kernel
> dump with KASLR enabled and providing additional kernel details.
>
> Since the device is a singleton and shouldn't use additional hardware
> resources, I decided to map this to a <feature> element in the libvirt
> domain XML. Feel free to argue and decide if it is better to have it
> under <devices> instead.
>
> The device is arm/x86 only for now (targets that support fw_cfg+dma).
>
> Related to:
> https://bugzilla.redhat.com/show_bug.cgi?id=1395248
>
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
> docs/formatdomain.html.in | 4 +++
> docs/schemas/domaincommon.rng | 5 +++
> src/conf/domain_conf.c | 5 ++-
> src/conf/domain_conf.h | 1 +
> src/qemu/qemu_capabilities.c | 2 ++
> src/qemu/qemu_capabilities.h | 1 +
> src/qemu/qemu_command.c | 26 +++++++++++++++
> .../qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args | 25 ++++++++++++++
> tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml | 28 ++++++++++++++++
> tests/qemuxml2argvtest.c | 1 +
> .../qemuxml2xmlout-vmcoreinfo.xml | 38 ++++++++++++++++++++++
> tests/qemuxml2xmltest.c | 1 +
> 12 files changed, 136 insertions(+), 1 deletion(-)
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
>
> diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
> index 92e14a919..d87a32a89 100644
> --- a/docs/formatdomain.html.in
> +++ b/docs/formatdomain.html.in
> @@ -1878,6 +1878,10 @@
> which is also known as a split I/O APIC mode.
> <span class="since">Since 3.4.0</span> (QEMU/KVM only)
> </dd>
> + <dt><code>vmcoreinfo</code></dt>
> + <dd>Enable QEMU vmcoreinfo device to let the guest kernel save debug
> + details. <span class="since">Since 3.10.0</span> (QEMU only)
> + </dd>
> </dl>
>
> <h3><a id="elementsTime">Time keeping</a></h3>
> diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
> index 9cec1a063..86cbe2c8c 100644
> --- a/docs/schemas/domaincommon.rng
> +++ b/docs/schemas/domaincommon.rng
> @@ -4736,6 +4736,11 @@
> <optional>
> <ref name="ioapic"/>
> </optional>
> + <optional>
> + <element name="vmcoreinfo">
> + <empty/>
> + </element>
> + </optional>
> </interleave>
> </element>
> </optional>
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index 400e90032..3a9b56cd2 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -148,7 +148,8 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
> "vmport",
> "gic",
> "smm",
> - "ioapic")
> + "ioapic",
> + "vmcoreinfo")
>
> VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, VIR_DOMAIN_CAPABILITIES_POLICY_LAST,
> "default",
> @@ -18710,6 +18711,7 @@ virDomainDefParseXML(xmlDocPtr xml,
> case VIR_DOMAIN_FEATURE_VIRIDIAN:
> case VIR_DOMAIN_FEATURE_PRIVNET:
> case VIR_DOMAIN_FEATURE_HYPERV:
> + case VIR_DOMAIN_FEATURE_VMCOREINFO:
> case VIR_DOMAIN_FEATURE_KVM:
> def->features[val] = VIR_TRISTATE_SWITCH_ON;
> break;
> @@ -26052,6 +26054,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
> case VIR_DOMAIN_FEATURE_ACPI:
> case VIR_DOMAIN_FEATURE_PAE:
> case VIR_DOMAIN_FEATURE_VIRIDIAN:
> + case VIR_DOMAIN_FEATURE_VMCOREINFO:
> case VIR_DOMAIN_FEATURE_PRIVNET:
> switch ((virTristateSwitch) def->features[i]) {
> case VIR_TRISTATE_SWITCH_ABSENT:
> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> index be38792c6..add668025 100644
> --- a/src/conf/domain_conf.h
> +++ b/src/conf/domain_conf.h
> @@ -1723,6 +1723,7 @@ typedef enum {
> VIR_DOMAIN_FEATURE_GIC,
> VIR_DOMAIN_FEATURE_SMM,
> VIR_DOMAIN_FEATURE_IOAPIC,
> + VIR_DOMAIN_FEATURE_VMCOREINFO,
>
> VIR_DOMAIN_FEATURE_LAST
> } virDomainFeature;
> diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
> index 7cb091056..44a2833a7 100644
> --- a/src/qemu/qemu_capabilities.c
> +++ b/src/qemu/qemu_capabilities.c
> @@ -443,6 +443,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
> /* 270 */
> "vxhs",
> "virtio-blk.num-queues",
> + "vmcoreinfo",
> );
>
>
> @@ -1670,6 +1671,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
> { "pcie-root-port", QEMU_CAPS_DEVICE_PCIE_ROOT_PORT },
> { "qemu-xhci", QEMU_CAPS_DEVICE_QEMU_XHCI },
> { "spapr-pci-host-bridge", QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE },
> + { "vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO },
> };
>
> static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBalloon[] = {
> diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
> index cacc2b77e..0cd9755a8 100644
> --- a/src/qemu/qemu_capabilities.h
> +++ b/src/qemu/qemu_capabilities.h
> @@ -429,6 +429,7 @@ typedef enum {
> /* 270 */
> QEMU_CAPS_VXHS, /* -drive file.driver=vxhs via query-qmp-schema */
> QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES, /* virtio-blk-*.num-queues */
> + QEMU_CAPS_DEVICE_VMCOREINFO, /* -device vmcoreinfo */
>
> 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 8708b79ed..b903b27b9 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -9727,6 +9727,29 @@ qemuBuildTPMCommandLine(virCommandPtr cmd,
> }
>
>
> +static int
> +qemuBuildVMCoreInfoCommandLine(virCommandPtr cmd,
> + const virDomainDef *def,
> + virQEMUCapsPtr qemuCaps)
> +{
> + virTristateSwitch vmci = def->features[VIR_DOMAIN_FEATURE_VMCOREINFO];
> +
> + if (vmci != VIR_TRISTATE_SWITCH_ON) {
> + return 0;
> + }
> +
> + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VMCOREINFO)) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("vmcoreinfo is not available "
> + "with this QEMU binary"));
> + return -1;
> + }
> +
> + virCommandAddArgList(cmd, "-device", "vmcoreinfo", NULL);
> + return 0;
> +}
> +
> +
> static int
> qemuBuildPanicCommandLine(virCommandPtr cmd,
> const virDomainDef *def,
> @@ -10146,6 +10169,9 @@ qemuBuildCommandLine(virQEMUDriverPtr driver,
> if (qemuBuildNVRAMCommandLine(cmd, def, qemuCaps) < 0)
> goto error;
>
> + if (qemuBuildVMCoreInfoCommandLine(cmd, def, qemuCaps) < 0)
> + goto error;
> +
> if (snapshot)
> virCommandAddArgList(cmd, "-loadvm", snapshot->def->name, NULL);
>
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> new file mode 100644
> index 000000000..772e5a071
> --- /dev/null
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> @@ -0,0 +1,25 @@
> +LC_ALL=C \
> +PATH=/bin \
> +HOME=/home/test \
> +USER=test \
> +LOGNAME=test \
> +QEMU_AUDIO_DRV=none \
> +/usr/bin/qemu-system-i686 \
> +-name QEMUGuest1 \
> +-S \
> +-M pc \
> +-m 214 \
> +-smp 1,sockets=1,cores=1,threads=1 \
> +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
> +-nographic \
> +-nodefaults \
> +-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
> +server,nowait \
> +-mon chardev=charmonitor,id=monitor,mode=readline \
> +-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 \
> +-device vmcoreinfo
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> new file mode 100644
> index 000000000..f8e586531
> --- /dev/null
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> @@ -0,0 +1,28 @@
> +<domain type='qemu'>
> + <name>QEMUGuest1</name>
> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> + <memory unit='KiB'>219100</memory>
> + <currentMemory unit='KiB'>219100</currentMemory>
> + <vcpu placement='static'>1</vcpu>
> + <os>
> + <type arch='i686' machine='pc'>hvm</type>
> + <boot dev='hd'/>
> + </os>
> + <features>
> + <vmcoreinfo/>
> + </features>
> + <clock offset='utc'/>
> + <on_poweroff>destroy</on_poweroff>
> + <on_reboot>restart</on_reboot>
> + <on_crash>destroy</on_crash>
> + <devices>
> + <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'/>
> + <memballoon model='virtio'/>
> + </devices>
> +</domain>
> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
> index 2e07b85aa..7b9b846ef 100644
> --- a/tests/qemuxml2argvtest.c
> +++ b/tests/qemuxml2argvtest.c
> @@ -2810,6 +2810,7 @@ mymain(void)
> DO_TEST_PARSE_ERROR("cpu-cache-emulate-l2", QEMU_CAPS_KVM);
> DO_TEST_PARSE_ERROR("cpu-cache-passthrough3", QEMU_CAPS_KVM);
> DO_TEST_PARSE_ERROR("cpu-cache-passthrough-l3", QEMU_CAPS_KVM);
> + DO_TEST("vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO);
>
> DO_TEST("user-aliases", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE_CIRRUS_VGA,
> QEMU_CAPS_OBJECT_MEMORY_FILE, QEMU_CAPS_PIIX_DISABLE_S3,
> diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
> new file mode 100644
> index 000000000..a3922d630
> --- /dev/null
> +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
> @@ -0,0 +1,38 @@
> +<domain type='qemu'>
> + <name>QEMUGuest1</name>
> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> + <memory unit='KiB'>219100</memory>
> + <currentMemory unit='KiB'>219100</currentMemory>
> + <vcpu placement='static'>1</vcpu>
> + <os>
> + <type arch='i686' machine='pc'>hvm</type>
> + <boot dev='hd'/>
> + </os>
> + <features>
> + <vmcoreinfo/>
> + </features>
> + <clock offset='utc'/>
> + <on_poweroff>destroy</on_poweroff>
> + <on_reboot>restart</on_reboot>
> + <on_crash>destroy</on_crash>
> + <devices>
> + <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'>
> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
> + </controller>
> + <controller type='usb' index='0'>
> + <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
> + </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 5a282e5ff..9a7d460e5 100644
> --- a/tests/qemuxml2xmltest.c
> +++ b/tests/qemuxml2xmltest.c
> @@ -1260,6 +1260,7 @@ mymain(void)
> DO_TEST("cpu-check-default-none2", NONE);
> DO_TEST("cpu-check-default-partial", NONE);
> DO_TEST("cpu-check-default-partial2", NONE);
> + DO_TEST("vmcoreinfo", NONE);
>
> DO_TEST("smartcard-host", NONE);
> DO_TEST("smartcard-host-certificates", NONE);
> --
> 2.15.0.rc0.40.gaefcc5f6f
>
> --
> libvir-list mailing list
> libvir-list@redhat.com
> https://www.redhat.com/mailman/listinfo/libvir-list
--
Marc-André Lureau
--
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libvir-list@redhat.com
https://www.redhat.com/mailman/listinfo/libvir-list
On Mon, Nov 06, 2017 at 01:09:09PM +0100, marcandre.lureau@redhat.com wrote:
>From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
>Starting from qemu 2.11, the `-device vmcoreinfo` will create a fw_cfg
>entry for a guest to store dump details, necessary to process kernel
>dump with KASLR enabled and providing additional kernel details.
>
>Since the device is a singleton and shouldn't use additional hardware
>resources, I decided to map this to a <feature> element in the libvirt
>domain XML. Feel free to argue and decide if it is better to have it
>under <devices> instead.
>
So is this similar to -fw_cfg name=etc/vmcoreinfo,file=X but in this case it is
not backed by a file, but collected by QEMU itself?
I'm OK with this being a feature.
>The device is arm/x86 only for now (targets that support fw_cfg+dma).
>
>Related to:
>https://bugzilla.redhat.com/show_bug.cgi?id=1395248
>
>Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
>---
> docs/formatdomain.html.in | 4 +++
> docs/schemas/domaincommon.rng | 5 +++
> src/conf/domain_conf.c | 5 ++-
> src/conf/domain_conf.h | 1 +
> src/qemu/qemu_capabilities.c | 2 ++
> src/qemu/qemu_capabilities.h | 1 +
> src/qemu/qemu_command.c | 26 +++++++++++++++
> .../qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args | 25 ++++++++++++++
> tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml | 28 ++++++++++++++++
> tests/qemuxml2argvtest.c | 1 +
> .../qemuxml2xmlout-vmcoreinfo.xml | 38 ++++++++++++++++++++++
> tests/qemuxml2xmltest.c | 1 +
> 12 files changed, 136 insertions(+), 1 deletion(-)
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
>
>diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
>index 92e14a919..d87a32a89 100644
>--- a/docs/formatdomain.html.in
>+++ b/docs/formatdomain.html.in
>@@ -1878,6 +1878,10 @@
> which is also known as a split I/O APIC mode.
> <span class="since">Since 3.4.0</span> (QEMU/KVM only)
> </dd>
>+ <dt><code>vmcoreinfo</code></dt>
>+ <dd>Enable QEMU vmcoreinfo device to let the guest kernel save debug
>+ details. <span class="since">Since 3.10.0</span> (QEMU only)
>+ </dd>
> </dl>
>
> <h3><a id="elementsTime">Time keeping</a></h3>
>diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
>index 9cec1a063..86cbe2c8c 100644
>--- a/docs/schemas/domaincommon.rng
>+++ b/docs/schemas/domaincommon.rng
>@@ -4736,6 +4736,11 @@
> <optional>
> <ref name="ioapic"/>
> </optional>
>+ <optional>
>+ <element name="vmcoreinfo">
>+ <empty/>
>+ </element>
>+ </optional>
> </interleave>
> </element>
> </optional>
>diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
>index 400e90032..3a9b56cd2 100644
>--- a/src/conf/domain_conf.c
>+++ b/src/conf/domain_conf.c
>@@ -148,7 +148,8 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
> "vmport",
> "gic",
> "smm",
>- "ioapic")
>+ "ioapic",
>+ "vmcoreinfo")
>
> VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, VIR_DOMAIN_CAPABILITIES_POLICY_LAST,
> "default",
>@@ -18710,6 +18711,7 @@ virDomainDefParseXML(xmlDocPtr xml,
> case VIR_DOMAIN_FEATURE_VIRIDIAN:
> case VIR_DOMAIN_FEATURE_PRIVNET:
> case VIR_DOMAIN_FEATURE_HYPERV:
>+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
> case VIR_DOMAIN_FEATURE_KVM:
> def->features[val] = VIR_TRISTATE_SWITCH_ON;
> break;
>@@ -26052,6 +26054,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
> case VIR_DOMAIN_FEATURE_ACPI:
> case VIR_DOMAIN_FEATURE_PAE:
> case VIR_DOMAIN_FEATURE_VIRIDIAN:
>+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
> case VIR_DOMAIN_FEATURE_PRIVNET:
> switch ((virTristateSwitch) def->features[i]) {
> case VIR_TRISTATE_SWITCH_ABSENT:
>diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
>index be38792c6..add668025 100644
>--- a/src/conf/domain_conf.h
>+++ b/src/conf/domain_conf.h
>@@ -1723,6 +1723,7 @@ typedef enum {
> VIR_DOMAIN_FEATURE_GIC,
> VIR_DOMAIN_FEATURE_SMM,
> VIR_DOMAIN_FEATURE_IOAPIC,
>+ VIR_DOMAIN_FEATURE_VMCOREINFO,
>
> VIR_DOMAIN_FEATURE_LAST
> } virDomainFeature;
>diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
>index 7cb091056..44a2833a7 100644
>--- a/src/qemu/qemu_capabilities.c
>+++ b/src/qemu/qemu_capabilities.c
>@@ -443,6 +443,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
> /* 270 */
> "vxhs",
> "virtio-blk.num-queues",
>+ "vmcoreinfo",
> );
>
>
>@@ -1670,6 +1671,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
> { "pcie-root-port", QEMU_CAPS_DEVICE_PCIE_ROOT_PORT },
> { "qemu-xhci", QEMU_CAPS_DEVICE_QEMU_XHCI },
> { "spapr-pci-host-bridge", QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE },
>+ { "vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO },
> };
>
> static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBalloon[] = {
>diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
>index cacc2b77e..0cd9755a8 100644
>--- a/src/qemu/qemu_capabilities.h
>+++ b/src/qemu/qemu_capabilities.h
>@@ -429,6 +429,7 @@ typedef enum {
> /* 270 */
> QEMU_CAPS_VXHS, /* -drive file.driver=vxhs via query-qmp-schema */
> QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES, /* virtio-blk-*.num-queues */
>+ QEMU_CAPS_DEVICE_VMCOREINFO, /* -device vmcoreinfo */
>
> 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 8708b79ed..b903b27b9 100644
>--- a/src/qemu/qemu_command.c
>+++ b/src/qemu/qemu_command.c
>@@ -9727,6 +9727,29 @@ qemuBuildTPMCommandLine(virCommandPtr cmd,
> }
>
>
>+static int
>+qemuBuildVMCoreInfoCommandLine(virCommandPtr cmd,
>+ const virDomainDef *def,
>+ virQEMUCapsPtr qemuCaps)
>+{
>+ virTristateSwitch vmci = def->features[VIR_DOMAIN_FEATURE_VMCOREINFO];
>+
>+ if (vmci != VIR_TRISTATE_SWITCH_ON) {
>+ return 0;
>+ }
>+
>+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VMCOREINFO)) {
>+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>+ _("vmcoreinfo is not available "
>+ "with this QEMU binary"));
>+ return -1;
>+ }
>+
>+ virCommandAddArgList(cmd, "-device", "vmcoreinfo", NULL);
>+ return 0;
>+}
>+
>+
> static int
> qemuBuildPanicCommandLine(virCommandPtr cmd,
> const virDomainDef *def,
>@@ -10146,6 +10169,9 @@ qemuBuildCommandLine(virQEMUDriverPtr driver,
> if (qemuBuildNVRAMCommandLine(cmd, def, qemuCaps) < 0)
> goto error;
>
>+ if (qemuBuildVMCoreInfoCommandLine(cmd, def, qemuCaps) < 0)
>+ goto error;
>+
> if (snapshot)
> virCommandAddArgList(cmd, "-loadvm", snapshot->def->name, NULL);
>
>diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
>new file mode 100644
>index 000000000..772e5a071
>--- /dev/null
>+++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
>@@ -0,0 +1,25 @@
>+LC_ALL=C \
>+PATH=/bin \
>+HOME=/home/test \
>+USER=test \
>+LOGNAME=test \
>+QEMU_AUDIO_DRV=none \
>+/usr/bin/qemu-system-i686 \
>+-name QEMUGuest1 \
>+-S \
>+-M pc \
>+-m 214 \
>+-smp 1,sockets=1,cores=1,threads=1 \
>+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
>+-nographic \
>+-nodefaults \
>+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
>+server,nowait \
>+-mon chardev=charmonitor,id=monitor,mode=readline \
>+-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 \
>+-device vmcoreinfo
>diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
>new file mode 100644
>index 000000000..f8e586531
>--- /dev/null
>+++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
>@@ -0,0 +1,28 @@
>+<domain type='qemu'>
>+ <name>QEMUGuest1</name>
>+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
>+ <memory unit='KiB'>219100</memory>
>+ <currentMemory unit='KiB'>219100</currentMemory>
>+ <vcpu placement='static'>1</vcpu>
>+ <os>
>+ <type arch='i686' machine='pc'>hvm</type>
>+ <boot dev='hd'/>
>+ </os>
>+ <features>
>+ <vmcoreinfo/>
>+ </features>
>+ <clock offset='utc'/>
>+ <on_poweroff>destroy</on_poweroff>
>+ <on_reboot>restart</on_reboot>
>+ <on_crash>destroy</on_crash>
>+ <devices>
>+ <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'/>
>+ <memballoon model='virtio'/>
>+ </devices>
>+</domain>
>diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
>index 2e07b85aa..7b9b846ef 100644
>--- a/tests/qemuxml2argvtest.c
>+++ b/tests/qemuxml2argvtest.c
>@@ -2810,6 +2810,7 @@ mymain(void)
> DO_TEST_PARSE_ERROR("cpu-cache-emulate-l2", QEMU_CAPS_KVM);
> DO_TEST_PARSE_ERROR("cpu-cache-passthrough3", QEMU_CAPS_KVM);
> DO_TEST_PARSE_ERROR("cpu-cache-passthrough-l3", QEMU_CAPS_KVM);
>+ DO_TEST("vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO);
>
> DO_TEST("user-aliases", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE_CIRRUS_VGA,
> QEMU_CAPS_OBJECT_MEMORY_FILE, QEMU_CAPS_PIIX_DISABLE_S3,
>diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
>new file mode 100644
>index 000000000..a3922d630
>--- /dev/null
>+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
>@@ -0,0 +1,38 @@
>+<domain type='qemu'>
>+ <name>QEMUGuest1</name>
>+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
>+ <memory unit='KiB'>219100</memory>
>+ <currentMemory unit='KiB'>219100</currentMemory>
>+ <vcpu placement='static'>1</vcpu>
>+ <os>
>+ <type arch='i686' machine='pc'>hvm</type>
>+ <boot dev='hd'/>
>+ </os>
>+ <features>
>+ <vmcoreinfo/>
>+ </features>
>+ <clock offset='utc'/>
>+ <on_poweroff>destroy</on_poweroff>
>+ <on_reboot>restart</on_reboot>
>+ <on_crash>destroy</on_crash>
>+ <devices>
>+ <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'>
>+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
>+ </controller>
>+ <controller type='usb' index='0'>
>+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
>+ </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 5a282e5ff..9a7d460e5 100644
>--- a/tests/qemuxml2xmltest.c
>+++ b/tests/qemuxml2xmltest.c
>@@ -1260,6 +1260,7 @@ mymain(void)
> DO_TEST("cpu-check-default-none2", NONE);
> DO_TEST("cpu-check-default-partial", NONE);
> DO_TEST("cpu-check-default-partial2", NONE);
>+ DO_TEST("vmcoreinfo", NONE);
>
> DO_TEST("smartcard-host", NONE);
> DO_TEST("smartcard-host-certificates", NONE);
>--
>2.15.0.rc0.40.gaefcc5f6f
>
>--
>libvir-list mailing list
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--
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Hi
----- Original Message -----
> On Mon, Nov 06, 2017 at 01:09:09PM +0100, marcandre.lureau@redhat.com wrote:
> >From: Marc-André Lureau <marcandre.lureau@redhat.com>
> >
> >Starting from qemu 2.11, the `-device vmcoreinfo` will create a fw_cfg
> >entry for a guest to store dump details, necessary to process kernel
> >dump with KASLR enabled and providing additional kernel details.
> >
> >Since the device is a singleton and shouldn't use additional hardware
> >resources, I decided to map this to a <feature> element in the libvirt
> >domain XML. Feel free to argue and decide if it is better to have it
> >under <devices> instead.
> >
>
> So is this similar to -fw_cfg name=etc/vmcoreinfo,file=X but in this case it
> is
> not backed by a file, but collected by QEMU itself?
correct
>
> I'm OK with this being a feature.
Should I split the commit or can I resubmit like this without RFC?
Thanks
>
> >The device is arm/x86 only for now (targets that support fw_cfg+dma).
> >
> >Related to:
> >https://bugzilla.redhat.com/show_bug.cgi?id=1395248
> >
> >Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> >---
> > docs/formatdomain.html.in | 4 +++
> > docs/schemas/domaincommon.rng | 5 +++
> > src/conf/domain_conf.c | 5 ++-
> > src/conf/domain_conf.h | 1 +
> > src/qemu/qemu_capabilities.c | 2 ++
> > src/qemu/qemu_capabilities.h | 1 +
> > src/qemu/qemu_command.c | 26 +++++++++++++++
> > .../qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args | 25 ++++++++++++++
> > tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml | 28 ++++++++++++++++
> > tests/qemuxml2argvtest.c | 1 +
> > .../qemuxml2xmlout-vmcoreinfo.xml | 38
> > ++++++++++++++++++++++
> > tests/qemuxml2xmltest.c | 1 +
> > 12 files changed, 136 insertions(+), 1 deletion(-)
> > create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> > create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> > create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
> >
> >diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
> >index 92e14a919..d87a32a89 100644
> >--- a/docs/formatdomain.html.in
> >+++ b/docs/formatdomain.html.in
> >@@ -1878,6 +1878,10 @@
> > which is also known as a split I/O APIC mode.
> > <span class="since">Since 3.4.0</span> (QEMU/KVM only)
> > </dd>
> >+ <dt><code>vmcoreinfo</code></dt>
> >+ <dd>Enable QEMU vmcoreinfo device to let the guest kernel save debug
> >+ details. <span class="since">Since 3.10.0</span> (QEMU only)
> >+ </dd>
> > </dl>
> >
> > <h3><a id="elementsTime">Time keeping</a></h3>
> >diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
> >index 9cec1a063..86cbe2c8c 100644
> >--- a/docs/schemas/domaincommon.rng
> >+++ b/docs/schemas/domaincommon.rng
> >@@ -4736,6 +4736,11 @@
> > <optional>
> > <ref name="ioapic"/>
> > </optional>
> >+ <optional>
> >+ <element name="vmcoreinfo">
> >+ <empty/>
> >+ </element>
> >+ </optional>
> > </interleave>
> > </element>
> > </optional>
> >diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> >index 400e90032..3a9b56cd2 100644
> >--- a/src/conf/domain_conf.c
> >+++ b/src/conf/domain_conf.c
> >@@ -148,7 +148,8 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
> > "vmport",
> > "gic",
> > "smm",
> >- "ioapic")
> >+ "ioapic",
> >+ "vmcoreinfo")
> >
> > VIR_ENUM_IMPL(virDomainCapabilitiesPolicy,
> > VIR_DOMAIN_CAPABILITIES_POLICY_LAST,
> > "default",
> >@@ -18710,6 +18711,7 @@ virDomainDefParseXML(xmlDocPtr xml,
> > case VIR_DOMAIN_FEATURE_VIRIDIAN:
> > case VIR_DOMAIN_FEATURE_PRIVNET:
> > case VIR_DOMAIN_FEATURE_HYPERV:
> >+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
> > case VIR_DOMAIN_FEATURE_KVM:
> > def->features[val] = VIR_TRISTATE_SWITCH_ON;
> > break;
> >@@ -26052,6 +26054,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
> > case VIR_DOMAIN_FEATURE_ACPI:
> > case VIR_DOMAIN_FEATURE_PAE:
> > case VIR_DOMAIN_FEATURE_VIRIDIAN:
> >+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
> > case VIR_DOMAIN_FEATURE_PRIVNET:
> > switch ((virTristateSwitch) def->features[i]) {
> > case VIR_TRISTATE_SWITCH_ABSENT:
> >diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> >index be38792c6..add668025 100644
> >--- a/src/conf/domain_conf.h
> >+++ b/src/conf/domain_conf.h
> >@@ -1723,6 +1723,7 @@ typedef enum {
> > VIR_DOMAIN_FEATURE_GIC,
> > VIR_DOMAIN_FEATURE_SMM,
> > VIR_DOMAIN_FEATURE_IOAPIC,
> >+ VIR_DOMAIN_FEATURE_VMCOREINFO,
> >
> > VIR_DOMAIN_FEATURE_LAST
> > } virDomainFeature;
> >diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
> >index 7cb091056..44a2833a7 100644
> >--- a/src/qemu/qemu_capabilities.c
> >+++ b/src/qemu/qemu_capabilities.c
> >@@ -443,6 +443,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
> > /* 270 */
> > "vxhs",
> > "virtio-blk.num-queues",
> >+ "vmcoreinfo",
> > );
> >
> >
> >@@ -1670,6 +1671,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[]
> >= {
> > { "pcie-root-port", QEMU_CAPS_DEVICE_PCIE_ROOT_PORT },
> > { "qemu-xhci", QEMU_CAPS_DEVICE_QEMU_XHCI },
> > { "spapr-pci-host-bridge", QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE },
> >+ { "vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO },
> > };
> >
> > static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBalloon[]
> > = {
> >diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
> >index cacc2b77e..0cd9755a8 100644
> >--- a/src/qemu/qemu_capabilities.h
> >+++ b/src/qemu/qemu_capabilities.h
> >@@ -429,6 +429,7 @@ typedef enum {
> > /* 270 */
> > QEMU_CAPS_VXHS, /* -drive file.driver=vxhs via query-qmp-schema */
> > QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES, /* virtio-blk-*.num-queues */
> >+ QEMU_CAPS_DEVICE_VMCOREINFO, /* -device vmcoreinfo */
> >
> > 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 8708b79ed..b903b27b9 100644
> >--- a/src/qemu/qemu_command.c
> >+++ b/src/qemu/qemu_command.c
> >@@ -9727,6 +9727,29 @@ qemuBuildTPMCommandLine(virCommandPtr cmd,
> > }
> >
> >
> >+static int
> >+qemuBuildVMCoreInfoCommandLine(virCommandPtr cmd,
> >+ const virDomainDef *def,
> >+ virQEMUCapsPtr qemuCaps)
> >+{
> >+ virTristateSwitch vmci = def->features[VIR_DOMAIN_FEATURE_VMCOREINFO];
> >+
> >+ if (vmci != VIR_TRISTATE_SWITCH_ON) {
> >+ return 0;
> >+ }
> >+
> >+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VMCOREINFO)) {
> >+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> >+ _("vmcoreinfo is not available "
> >+ "with this QEMU binary"));
> >+ return -1;
> >+ }
> >+
> >+ virCommandAddArgList(cmd, "-device", "vmcoreinfo", NULL);
> >+ return 0;
> >+}
> >+
> >+
> > static int
> > qemuBuildPanicCommandLine(virCommandPtr cmd,
> > const virDomainDef *def,
> >@@ -10146,6 +10169,9 @@ qemuBuildCommandLine(virQEMUDriverPtr driver,
> > if (qemuBuildNVRAMCommandLine(cmd, def, qemuCaps) < 0)
> > goto error;
> >
> >+ if (qemuBuildVMCoreInfoCommandLine(cmd, def, qemuCaps) < 0)
> >+ goto error;
> >+
> > if (snapshot)
> > virCommandAddArgList(cmd, "-loadvm", snapshot->def->name, NULL);
> >
> >diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> >b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> >new file mode 100644
> >index 000000000..772e5a071
> >--- /dev/null
> >+++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.args
> >@@ -0,0 +1,25 @@
> >+LC_ALL=C \
> >+PATH=/bin \
> >+HOME=/home/test \
> >+USER=test \
> >+LOGNAME=test \
> >+QEMU_AUDIO_DRV=none \
> >+/usr/bin/qemu-system-i686 \
> >+-name QEMUGuest1 \
> >+-S \
> >+-M pc \
> >+-m 214 \
> >+-smp 1,sockets=1,cores=1,threads=1 \
> >+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
> >+-nographic \
> >+-nodefaults \
> >+-chardev
> >socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
> >+server,nowait \
> >+-mon chardev=charmonitor,id=monitor,mode=readline \
> >+-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 \
> >+-device vmcoreinfo
> >diff --git a/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> >b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> >new file mode 100644
> >index 000000000..f8e586531
> >--- /dev/null
> >+++ b/tests/qemuxml2argvdata/qemuxml2argv-vmcoreinfo.xml
> >@@ -0,0 +1,28 @@
> >+<domain type='qemu'>
> >+ <name>QEMUGuest1</name>
> >+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> >+ <memory unit='KiB'>219100</memory>
> >+ <currentMemory unit='KiB'>219100</currentMemory>
> >+ <vcpu placement='static'>1</vcpu>
> >+ <os>
> >+ <type arch='i686' machine='pc'>hvm</type>
> >+ <boot dev='hd'/>
> >+ </os>
> >+ <features>
> >+ <vmcoreinfo/>
> >+ </features>
> >+ <clock offset='utc'/>
> >+ <on_poweroff>destroy</on_poweroff>
> >+ <on_reboot>restart</on_reboot>
> >+ <on_crash>destroy</on_crash>
> >+ <devices>
> >+ <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'/>
> >+ <memballoon model='virtio'/>
> >+ </devices>
> >+</domain>
> >diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
> >index 2e07b85aa..7b9b846ef 100644
> >--- a/tests/qemuxml2argvtest.c
> >+++ b/tests/qemuxml2argvtest.c
> >@@ -2810,6 +2810,7 @@ mymain(void)
> > DO_TEST_PARSE_ERROR("cpu-cache-emulate-l2", QEMU_CAPS_KVM);
> > DO_TEST_PARSE_ERROR("cpu-cache-passthrough3", QEMU_CAPS_KVM);
> > DO_TEST_PARSE_ERROR("cpu-cache-passthrough-l3", QEMU_CAPS_KVM);
> >+ DO_TEST("vmcoreinfo", QEMU_CAPS_DEVICE_VMCOREINFO);
> >
> > DO_TEST("user-aliases", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE_CIRRUS_VGA,
> > QEMU_CAPS_OBJECT_MEMORY_FILE, QEMU_CAPS_PIIX_DISABLE_S3,
> >diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
> >b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
> >new file mode 100644
> >index 000000000..a3922d630
> >--- /dev/null
> >+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-vmcoreinfo.xml
> >@@ -0,0 +1,38 @@
> >+<domain type='qemu'>
> >+ <name>QEMUGuest1</name>
> >+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> >+ <memory unit='KiB'>219100</memory>
> >+ <currentMemory unit='KiB'>219100</currentMemory>
> >+ <vcpu placement='static'>1</vcpu>
> >+ <os>
> >+ <type arch='i686' machine='pc'>hvm</type>
> >+ <boot dev='hd'/>
> >+ </os>
> >+ <features>
> >+ <vmcoreinfo/>
> >+ </features>
> >+ <clock offset='utc'/>
> >+ <on_poweroff>destroy</on_poweroff>
> >+ <on_reboot>restart</on_reboot>
> >+ <on_crash>destroy</on_crash>
> >+ <devices>
> >+ <emulator>/usr/bin/qemu-system-i686</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='ide' index='0'>
> >+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> >function='0x1'/>
> >+ </controller>
> >+ <controller type='usb' index='0'>
> >+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> >function='0x2'/>
> >+ </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 5a282e5ff..9a7d460e5 100644
> >--- a/tests/qemuxml2xmltest.c
> >+++ b/tests/qemuxml2xmltest.c
> >@@ -1260,6 +1260,7 @@ mymain(void)
> > DO_TEST("cpu-check-default-none2", NONE);
> > DO_TEST("cpu-check-default-partial", NONE);
> > DO_TEST("cpu-check-default-partial2", NONE);
> >+ DO_TEST("vmcoreinfo", NONE);
> >
> > DO_TEST("smartcard-host", NONE);
> > DO_TEST("smartcard-host-certificates", NONE);
> >--
> >2.15.0.rc0.40.gaefcc5f6f
> >
> >--
> >libvir-list mailing list
> >libvir-list@redhat.com
> >https://www.redhat.com/mailman/listinfo/libvir-list
>
--
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On Thu, Nov 16, 2017 at 09:27:52AM -0500, Marc-André Lureau wrote: >Hi > >----- Original Message ----- >> On Mon, Nov 06, 2017 at 01:09:09PM +0100, marcandre.lureau@redhat.com wrote: >> >From: Marc-André Lureau <marcandre.lureau@redhat.com> >> > >> >Starting from qemu 2.11, the `-device vmcoreinfo` will create a fw_cfg >> >entry for a guest to store dump details, necessary to process kernel >> >dump with KASLR enabled and providing additional kernel details. >> > >> >Since the device is a singleton and shouldn't use additional hardware >> >resources, I decided to map this to a <feature> element in the libvirt >> >domain XML. Feel free to argue and decide if it is better to have it >> >under <devices> instead. >> > >> >> So is this similar to -fw_cfg name=etc/vmcoreinfo,file=X but in this case it >> is >> not backed by a file, but collected by QEMU itself? > >correct > would you mind adding a tiny detail about that into the commit message? >> >> I'm OK with this being a feature. > >Should I split the commit or can I resubmit like this without RFC? > It would be nice to have this in news.xml, so if you don't mind resending with the second patch adding it to docs/news.xml, I'd be glad.-- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
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