From: Michal Privoznik <mprivozn@redhat.com> So far the set of available Hyper-V enlightenments are reported in domain capabilities. Well, some enlightenments are more than just simple on/off switch. For instance, the 'spinlocks' enlightenment expects a number, or 'vendor_id' expects a string. All of these have some default values (at least in QEMU) and are used when the passthrough mode is set. Allow querying these defaults in domain capabilities XML. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> --- docs/formatdomaincaps.rst | 5 ++- src/conf/domain_capabilities.c | 61 ++++++++++++++++++++++++++++++++- src/conf/domain_capabilities.h | 11 ++++++ src/conf/schemas/domaincaps.rng | 29 ++++++++++++++++ src/libvirt_private.syms | 2 ++ src/qemu/qemu_capabilities.c | 12 +++---- 6 files changed, 111 insertions(+), 9 deletions(-) diff --git a/docs/formatdomaincaps.rst b/docs/formatdomaincaps.rst index 4eb8211b09..32dc09d41e 100644 --- a/docs/formatdomaincaps.rst +++ b/docs/formatdomaincaps.rst @@ -869,7 +869,10 @@ Hyper-V Enlightenments Report which features improving behavior of guests running Microsoft Windows are supported. The ``features`` enum corresponds to the ``<hyperv/>`` element (well, its children) as documented in `Hypervisor features -<formatdomain.html#hypervisor-features>`__. +<formatdomain.html#hypervisor-features>`__. The ``defaults`` element then +contains child elements describing default values as reported by hypervisor, +e.h. whether direct or extended TLB flushes are available. :since:`(since +11.9.0)` Launch security ^^^^^^^^^^^^^^^ diff --git a/src/conf/domain_capabilities.c b/src/conf/domain_capabilities.c index f29c4e0515..422b68c085 100644 --- a/src/conf/domain_capabilities.c +++ b/src/conf/domain_capabilities.c @@ -92,6 +92,32 @@ virSGXCapabilitiesFree(virSGXCapability *cap) } +void +virDomainCapsFeatureHypervFree(virDomainCapsFeatureHyperv *cap) +{ + if (!cap) + return; + + g_free(cap->vendor_id); + g_free(cap); +} + + +virDomainCapsFeatureHyperv * +virDomainCapsFeatureHypervCopy(virDomainCapsFeatureHyperv *cap) +{ + virDomainCapsFeatureHyperv *ret = NULL; + + if (!cap) + return NULL; + + ret = g_memdup2(cap, sizeof(virDomainCapsFeatureHyperv)); + ret->vendor_id = g_strdup(cap->vendor_id); + + return ret; +} + + static void virDomainCapsDispose(void *obj) { @@ -105,7 +131,7 @@ virDomainCapsDispose(void *obj) virCPUDefFree(caps->cpu.hostModel); virSEVCapabilitiesFree(caps->sev); virSGXCapabilitiesFree(caps->sgx); - g_free(caps->hyperv); + virDomainCapsFeatureHypervFree(caps->hyperv); values = &caps->os.loader.values; for (i = 0; i < values->nvalues; i++) @@ -791,6 +817,8 @@ static void virDomainCapsFeatureHypervFormat(virBuffer *buf, const virDomainCapsFeatureHyperv *hyperv) { + virBuffer defaults = VIR_BUFFER_INIT_CHILD(buf); + if (!hyperv) return; @@ -798,6 +826,37 @@ virDomainCapsFeatureHypervFormat(virBuffer *buf, ENUM_PROCESS(hyperv, features, virDomainHypervTypeToString); + virBufferAdjustIndent(&defaults, 2); + + if (VIR_DOMAIN_CAPS_ENUM_IS_SET(hyperv->features, VIR_DOMAIN_HYPERV_SPINLOCKS) && + hyperv->spinlocks != 0) { + virBufferAsprintf(&defaults, "<spinlocks>%u</spinlocks>\n", hyperv->spinlocks); + } + + if (VIR_DOMAIN_CAPS_ENUM_IS_SET(hyperv->features, VIR_DOMAIN_HYPERV_STIMER) && + hyperv->stimer_direct != VIR_TRISTATE_SWITCH_ABSENT) { + virBufferAsprintf(&defaults, "<stimer_direct>%s</stimer_direct>\n", + virTristateSwitchTypeToString(hyperv->stimer_direct)); + } + + if (VIR_DOMAIN_CAPS_ENUM_IS_SET(hyperv->features, VIR_DOMAIN_HYPERV_TLBFLUSH)) { + if (hyperv->tlbflush_direct != VIR_TRISTATE_SWITCH_ABSENT) { + virBufferAsprintf(&defaults, "<tlbflush_direct>%s</tlbflush_direct>\n", + virTristateSwitchTypeToString(hyperv->tlbflush_direct)); + } + + if (hyperv->tlbflush_extended != VIR_TRISTATE_SWITCH_ABSENT) { + virBufferAsprintf(&defaults, "<tlbflush_extended>%s</tlbflush_extended>\n", + virTristateSwitchTypeToString(hyperv->tlbflush_extended)); + } + } + + if (VIR_DOMAIN_CAPS_ENUM_IS_SET(hyperv->features, VIR_DOMAIN_HYPERV_VENDOR_ID)) { + virBufferEscapeString(&defaults, "<vendor_id>%s</vendor_id>\n", hyperv->vendor_id); + } + + virXMLFormatElement(buf, "defaults", NULL, &defaults); + FORMAT_EPILOGUE(hyperv); } diff --git a/src/conf/domain_capabilities.h b/src/conf/domain_capabilities.h index 43141dbdd5..437981c711 100644 --- a/src/conf/domain_capabilities.h +++ b/src/conf/domain_capabilities.h @@ -163,6 +163,11 @@ typedef struct _virDomainCapsFeatureHyperv virDomainCapsFeatureHyperv; struct _virDomainCapsFeatureHyperv { virTristateBool supported; virDomainCapsEnum features; /* Info about supported virDomainHyperv features */ + unsigned int spinlocks; + virTristateSwitch stimer_direct; + virTristateSwitch tlbflush_direct; + virTristateSwitch tlbflush_extended; + char *vendor_id; }; STATIC_ASSERT_ENUM(VIR_DOMAIN_LAUNCH_SECURITY_LAST); @@ -378,3 +383,9 @@ void virSGXCapabilitiesFree(virSGXCapability *capabilities); G_DEFINE_AUTOPTR_CLEANUP_FUNC(virSGXCapability, virSGXCapabilitiesFree); + +void virDomainCapsFeatureHypervFree(virDomainCapsFeatureHyperv *capabilities); +G_DEFINE_AUTOPTR_CLEANUP_FUNC(virDomainCapsFeatureHyperv, virDomainCapsFeatureHypervFree); + +virDomainCapsFeatureHyperv * +virDomainCapsFeatureHypervCopy(virDomainCapsFeatureHyperv *cap); diff --git a/src/conf/schemas/domaincaps.rng b/src/conf/schemas/domaincaps.rng index 7edae54931..8d0380951d 100644 --- a/src/conf/schemas/domaincaps.rng +++ b/src/conf/schemas/domaincaps.rng @@ -509,6 +509,35 @@ <element name="hyperv"> <ref name="supported"/> <ref name="enum"/> + <optional> + <element name="defaults"> + <optional> + <element name="spinlocks"> + <ref name="unsignedInt"/> + </element> + </optional> + <optional> + <element name="stimer_direct"> + <ref name="virOnOff"/> + </element> + </optional> + <optional> + <element name="tlbflush_direct"> + <ref name="virOnOff"/> + </element> + </optional> + <optional> + <element name="tlbflush_extended"> + <ref name="virOnOff"/> + </element> + </optional> + <optional> + <element name="vendor_id"> + <text/> + </element> + </optional> + </element> + </optional> </element> </define> diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 1a4f47aabc..26776dff2a 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -217,6 +217,8 @@ virDomainCapsCPUUsableTypeFromString; virDomainCapsCPUUsableTypeToString; virDomainCapsEnumClear; virDomainCapsEnumSet; +virDomainCapsFeatureHypervCopy; +virDomainCapsFeatureHypervFree; virDomainCapsFormat; virDomainCapsNew; virSEVCapabilitiesFree; diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 5b485d7bfb..2ccddbfcaa 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -2070,8 +2070,7 @@ virQEMUCaps *virQEMUCapsNewCopy(virQEMUCaps *qemuCaps) if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SGX_EPC)) virQEMUCapsSGXInfoCopy(&ret->sgxCapabilities, qemuCaps->sgxCapabilities); - ret->hypervCapabilities = g_memdup2(qemuCaps->hypervCapabilities, - sizeof(virDomainCapsFeatureHyperv)); + ret->hypervCapabilities = virDomainCapsFeatureHypervCopy(qemuCaps->hypervCapabilities); return g_steal_pointer(&ret); } @@ -2113,7 +2112,7 @@ void virQEMUCapsDispose(void *obj) virSEVCapabilitiesFree(qemuCaps->sevCapabilities); virSGXCapabilitiesFree(qemuCaps->sgxCapabilities); - g_free(qemuCaps->hypervCapabilities); + virDomainCapsFeatureHypervFree(qemuCaps->hypervCapabilities); virQEMUCapsAccelClear(&qemuCaps->kvm); virQEMUCapsAccelClear(&qemuCaps->hvf); @@ -3138,7 +3137,7 @@ static int virQEMUCapsProbeHypervCapabilities(virQEMUCaps *qemuCaps, qemuMonitorCPUModelInfo *fullQEMU) { - g_autofree virDomainCapsFeatureHyperv *hvcaps = NULL; + g_autoptr(virDomainCapsFeatureHyperv) hvcaps = NULL; size_t i; if (!fullQEMU) @@ -4494,7 +4493,7 @@ static int virQEMUCapsParseHypervCapabilities(virQEMUCaps *qemuCaps, xmlXPathContextPtr ctxt) { - g_autofree virDomainCapsFeatureHyperv *hvcaps = NULL; + g_autoptr(virDomainCapsFeatureHyperv) hvcaps = NULL; xmlNodePtr n = NULL; g_autofree xmlNodePtr *capNodes = NULL; int ncapNodes; @@ -6930,8 +6929,7 @@ static void virQEMUCapsFillDomainFeatureHypervCaps(virQEMUCaps *qemuCaps, virDomainCaps *domCaps) { - domCaps->hyperv = g_memdup2(qemuCaps->hypervCapabilities, - sizeof(virDomainCapsFeatureHyperv)); + domCaps->hyperv = virDomainCapsFeatureHypervCopy(qemuCaps->hypervCapabilities); } -- 2.49.1