[PATCH v1 6/7] qemu: Implement the IBS pSeries feature

This patch adds the implementation of the IBS pSeries feature, using the QEMU_CAPS_MACHINE_PSERIES_CAP_IBS capability added in the previous patch. IBS can have the following values: "broken", "workaround", "fixed-ibs", "fixed-ccd" and "fixed-na". This is the XML format for the cap: <features> <ibs value='fixed-ibs'/> </features> Signed-off-by: Daniel Henrique Barboza <danielhb413(a)gmail.com&gt; --- docs/formatdomain.html.in | 14 ++++++ docs/schemas/domaincommon.rng | 17 +++++++ src/conf/domain_conf.c | 46 +++++++++++++++++++ src/conf/domain_conf.h | 14 ++++++ src/libvirt_private.syms | 1 + src/qemu/qemu_command.c | 5 ++ src/qemu/qemu_validate.c | 11 +++++ tests/qemuxml2argvdata/pseries-features.args | 2 +- tests/qemuxml2argvdata/pseries-features.xml | 1 + tests/qemuxml2argvtest.c | 25 ++++++++-- tests/qemuxml2xmloutdata/pseries-features.xml | 1 + tests/qemuxml2xmltest.c | 3 +- 12 files changed, 135 insertions(+), 5 deletions(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 2146374475..01aa825fc6 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -2076,6 +2076,7 @@ &lt;msrs unknown='ignore'/&gt; &lt;cfpc value='workaround'/&gt; &lt;sbbc value='workaround'/&gt; + &lt;ibs value='fixed-na'/&gt; &lt;/features&gt; ...</pre> @@ -2401,6 +2402,19 @@ default will be used. <span class="since">Since 6.3.0</span> (QEMU/KVM only) </dd> + <dt><code>ibs</code></dt> + <dd>Configure ibs (Indirect Branch Speculation) availability for + pSeries guests. + Possible values for the <code>value</code> attribute + are <code>broken</code> (no protection), <code>workaround</code> + (count cache flush), <code>fixed-ibs</code> (fixed by + serializing indirect branches), <code>fixed-ccd</code> (fixed by + disabling the cache count) and <code>fixed-na (fixed in + hardware - no longer applicable)</code>. + If the attribute is not defined, the hypervisor + default will be used. + <span class="since">Since 6.3.0</span> (QEMU/KVM only) + </dd> </dl> <h3><a id="elementsTime">Time keeping</a></h3> diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index 72c281aa8f..75d5cd3271 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -5436,6 +5436,9 @@ <optional> <ref name="sbbc"/> </optional> + <optional> + <ref name="ibs"/> + </optional> </interleave> </element> </optional> @@ -5719,6 +5722,20 @@ </element> </define> + <define name="ibs"> + <element name="ibs"> + <attribute name="value"> + <choice> + <value>broken</value> + <value>workaround</value> + <value>fixed-ibs</value> + <value>fixed-ccd</value> + <value>fixed-na</value> + </choice> + </attribute> + </element> + </define> + <define name="address"> <element name="address"> <choice> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 5373b29263..dfa7421249 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -175,6 +175,7 @@ VIR_ENUM_IMPL(virDomainFeature, "ccf-assist", "cfpc", "sbbc", + "ibs", ); VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, @@ -1269,6 +1270,16 @@ VIR_ENUM_IMPL(virDomainSBBC, "fixed", ); +VIR_ENUM_IMPL(virDomainIBS, + VIR_DOMAIN_IBS_LAST, + "none", + "broken", + "workaround", + "fixed-ibs", + "fixed-ccd", + "fixed-na", +); + /* Internal mapping: subset of block job types that can be present in * <mirror> XML (remaining types are not two-phase). */ VIR_ENUM_DECL(virDomainBlockJob); @@ -21009,6 +21020,21 @@ virDomainDefParseXML(xmlDocPtr xml, } break; + case VIR_DOMAIN_FEATURE_IBS: + tmp = virXMLPropString(nodes[i], "value"); + if (tmp) { + int value = virDomainIBSTypeFromString(tmp); + if (value < 0 || value == VIR_DOMAIN_IBS_NONE) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Unknown value: %s"), + tmp); + goto error; + } + def->features[val] = value; + VIR_FREE(tmp); + } + break; + case VIR_DOMAIN_FEATURE_HTM: case VIR_DOMAIN_FEATURE_NESTED_HV: case VIR_DOMAIN_FEATURE_CCF_ASSIST: @@ -23338,6 +23364,18 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src, } break; + case VIR_DOMAIN_FEATURE_IBS: + if (src->features[i] != dst->features[i]) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("State of feature '%s' differs: " + "source: '%s=%s', destination: '%s=%s'"), + featureName, + "value", virDomainIBSTypeToString(src->features[i]), + "value", virDomainIBSTypeToString(dst->features[i])); + return false; + } + break; + case VIR_DOMAIN_FEATURE_MSRS: break; @@ -29112,6 +29150,14 @@ virDomainDefFormatFeatures(virBufferPtr buf, virDomainSBBCTypeToString(def->features[i])); break; + case VIR_DOMAIN_FEATURE_IBS: + if (def->features[i] == VIR_DOMAIN_IBS_NONE) + break; + + virBufferAsprintf(&childBuf, "<ibs value='%s'/>\n", + virDomainIBSTypeToString(def->features[i])); + break; + /* coverity[dead_error_begin] */ case VIR_DOMAIN_FEATURE_LAST: break; diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index c04441e587..a5582f7a34 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1816,6 +1816,7 @@ typedef enum { VIR_DOMAIN_FEATURE_CCF_ASSIST, VIR_DOMAIN_FEATURE_CFPC, VIR_DOMAIN_FEATURE_SBBC, + VIR_DOMAIN_FEATURE_IBS, VIR_DOMAIN_FEATURE_LAST } virDomainFeature; @@ -1994,6 +1995,19 @@ typedef enum { VIR_ENUM_DECL(virDomainSBBC); +typedef enum { + VIR_DOMAIN_IBS_NONE = 0, + VIR_DOMAIN_IBS_BROKEN, + VIR_DOMAIN_IBS_WORKAROUND, + VIR_DOMAIN_IBS_FIXEDIBS, + VIR_DOMAIN_IBS_FIXEDCCD, + VIR_DOMAIN_IBS_FIXEDNA, + + VIR_DOMAIN_IBS_LAST +} virDomainIBS; + +VIR_ENUM_DECL(virDomainIBS); + /* Operating system configuration data & machine / arch */ struct _virDomainOSEnv { char *name; diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 99e74eee84..09a6ca8956 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -455,6 +455,7 @@ virDomainHubTypeFromString; virDomainHubTypeToString; virDomainHypervTypeFromString; virDomainHypervTypeToString; +virDomainIBSTypeToString; virDomainInputBusTypeToString; virDomainInputDefFind; virDomainInputDefFree; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 0c3b37760a..32565b49a9 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -7173,6 +7173,11 @@ qemuBuildMachineCommandLine(virCommandPtr cmd, virBufferAsprintf(&buf, ",cap-sbbc=%s", str); } + if (def->features[VIR_DOMAIN_FEATURE_IBS] != VIR_DOMAIN_IBS_NONE) { + const char *str = virDomainIBSTypeToString(def->features[VIR_DOMAIN_FEATURE_IBS]); + virBufferAsprintf(&buf, ",cap-ibs=%s", str); + } + if (cpu && cpu->model && cpu->mode == VIR_CPU_MODE_HOST_MODEL && qemuDomainIsPSeries(def) && diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c index f75cec93c2..7d356f683a 100644 --- a/src/qemu/qemu_validate.c +++ b/src/qemu/qemu_validate.c @@ -156,6 +156,16 @@ qemuValidateDomainDefPSeriesFeature(const virDomainDef *def, return -1; } + break; + + case VIR_DOMAIN_FEATURE_IBS: + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_CAP_IBS)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("ibs configuration is not supported by " + "this QEMU binary")); + return -1; + } + break; } @@ -216,6 +226,7 @@ qemuValidateDomainDefFeatures(const virDomainDef *def, case VIR_DOMAIN_FEATURE_CCF_ASSIST: case VIR_DOMAIN_FEATURE_CFPC: case VIR_DOMAIN_FEATURE_SBBC: + case VIR_DOMAIN_FEATURE_IBS: if (qemuValidateDomainDefPSeriesFeature(def, qemuCaps, i) < 0) return -1; break; diff --git a/tests/qemuxml2argvdata/pseries-features.args b/tests/qemuxml2argvdata/pseries-features.args index 9a64df7593..668eeb157b 100644 --- a/tests/qemuxml2argvdata/pseries-features.args +++ b/tests/qemuxml2argvdata/pseries-features.args @@ -12,7 +12,7 @@ QEMU_AUDIO_DRV=none \ -S \ -machine pseries,accel=tcg,usb=off,dump-guest-core=off,resize-hpt=required,\ cap-hpt-max-page-size=1048576k,cap-htm=on,cap-nested-hv=off,cap-ccf-assist=on,\ -cap-cfpc=fixed,cap-sbbc=broken \ +cap-cfpc=fixed,cap-sbbc=broken,cap-ibs=fixed-ccd \ -m 512 \ -realtime mlock=off \ -smp 1,sockets=1,cores=1,threads=1 \ diff --git a/tests/qemuxml2argvdata/pseries-features.xml b/tests/qemuxml2argvdata/pseries-features.xml index ef431b0067..6e4700a56a 100644 --- a/tests/qemuxml2argvdata/pseries-features.xml +++ b/tests/qemuxml2argvdata/pseries-features.xml @@ -15,6 +15,7 @@ <ccf-assist state='on'/> <cfpc value='fixed'/> <sbbc value='broken'/> + <ibs value='fixed-ccd'/> </features> <devices> <emulator>/usr/bin/qemu-system-ppc64</emulator> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 0b4dc0dec5..eb509e0bc0 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1965,6 +1965,7 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT); /* parse error: no QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT */ @@ -1975,7 +1976,8 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV, QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, - QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC); + QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS); /* parse error: no QEMU_CAPS_MACHINE_PSERIES_CAP_HPT_MAX_PAGE_SIZE */ DO_TEST_PARSE_ERROR("pseries-features", @@ -1985,6 +1987,7 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT); /* parse error: no QEMU_CAPS_MACHINE_PSERIES_CAP_HTM */ @@ -1995,6 +1998,7 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT); /* parse error: no QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV */ @@ -2005,6 +2009,7 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT); /* parse error: no QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST */ @@ -2015,6 +2020,7 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV, QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT); /* parse error: no QEMU_CAPS_MACHINE_PSERIES_CFPC */ @@ -2025,7 +2031,8 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_HTM, QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV, QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, - QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC); + QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS); /* parse error: no QEMU_CAPS_MACHINE_PSERIES_SBBC */ DO_TEST_PARSE_ERROR("pseries-features", @@ -2035,7 +2042,19 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_HTM, QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV, QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, - QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC); + QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS); + + /* parse error: no QEMU_CAPS_MACHINE_PSERIES_IBS */ + DO_TEST_PARSE_ERROR("pseries-features", + QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE, + QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT, + QEMU_CAPS_MACHINE_PSERIES_CAP_HPT_MAX_PAGE_SIZE, + QEMU_CAPS_MACHINE_PSERIES_CAP_HTM, + QEMU_CAPS_MACHINE_PSERIES_CAP_NESTED_HV, + QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, + QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, + QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC); DO_TEST_PARSE_ERROR("pseries-features-invalid-machine", NONE); diff --git a/tests/qemuxml2xmloutdata/pseries-features.xml b/tests/qemuxml2xmloutdata/pseries-features.xml index 3700ffa195..e1c1d7306e 100644 --- a/tests/qemuxml2xmloutdata/pseries-features.xml +++ b/tests/qemuxml2xmloutdata/pseries-features.xml @@ -17,6 +17,7 @@ <ccf-assist state='on'/> <cfpc value='fixed'/> <sbbc value='broken'/> + <ibs value='fixed-ccd'/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index 9e1b5be13c..78fa9060e1 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -696,7 +696,8 @@ mymain(void) QEMU_CAPS_MACHINE_PSERIES_CAP_CCF_ASSIST, QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT, QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, - QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC); + QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, + QEMU_CAPS_MACHINE_PSERIES_CAP_IBS); DO_TEST("pseries-serial-native", QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE, -- 2.25.2