[libvirt] [RFC 6/6] qemu: Cache GIC capabilities

Implement support for saving GIC capabilities in the cache and read them back. --- src/qemu/qemu_capabilities.c | 87 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 64007f0..23c3740 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -2906,6 +2906,77 @@ virQEMUCapsLoadCache(virQEMUCapsPtr qemuCaps, const char *filename, } VIR_FREE(nodes); + if ((n = virXPathNodeSet("./gic", ctxt, &nodes)) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("failed to parse qemu capabilities gic")); + goto cleanup; + } + if (n > 0) { + unsigned int uintValue; + bool boolValue; + + qemuCaps->ngicCapabilities = n; + if (VIR_ALLOC_N(qemuCaps->gicCapabilities, n) < 0) + goto cleanup; + + for (i = 0; i < n; i++) { + virGICCapabilityPtr cap = &qemuCaps->gicCapabilities[i]; + + if (!(str = virXMLPropString(nodes[i], "version"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("missing GIC version " + "in QEMU capabilities cache")); + goto cleanup; + } + if (str && + virStrToLong_ui(str, NULL, 10, &uintValue) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed GIC version " + "in QEMU capabilities cache")); + goto cleanup; + } + cap->version = uintValue; + VIR_FREE(str); + + if (!(str = virXMLPropString(nodes[i], "kernel"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("missing in-kernel GIC information " + "in QEMU capabilities cache")); + goto cleanup; + } + if (str && + !(boolValue = STREQ(str, "true")) && + STRNEQ(str, "false")) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed in-kernel GIC information " + "in QEMU capabilities cache")); + goto cleanup; + } + if (boolValue) + cap->implementation |= VIR_GIC_IMPLEMENTATION_KERNEL; + VIR_FREE(str); + + if (!(str = virXMLPropString(nodes[i], "emulated"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("missing emulated GIC information " + "in QEMU capabilities cache")); + goto cleanup; + } + if (str && + !(boolValue = STREQ(str, "true")) && + STRNEQ(str, "false")) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed emulated GIC information " + "in QEMU capabilities cache")); + goto cleanup; + } + if (boolValue) + cap->implementation |= VIR_GIC_IMPLEMENTATION_EMULATED; + VIR_FREE(str); + } + } + VIR_FREE(nodes); + ret = 0; cleanup: VIR_FREE(str); @@ -2972,6 +3043,22 @@ virQEMUCapsSaveCache(virQEMUCapsPtr qemuCaps, const char *filename) qemuCaps->machineMaxCpus[i]); } + for (i = 0; i < qemuCaps->ngicCapabilities; i++) { + virGICCapabilityPtr cap; + bool kernel; + bool emulated; + + cap = &qemuCaps->gicCapabilities[i]; + kernel = (cap->implementation & VIR_GIC_IMPLEMENTATION_KERNEL); + emulated = (cap->implementation & VIR_GIC_IMPLEMENTATION_EMULATED); + + virBufferAsprintf(&buf, + "<gic version='%d' kernel='%s' emulated='%s'/>\n", + cap->version, + kernel ? "true" : "false", + emulated ? "true" : "false"); + } + virBufferAdjustIndent(&buf, -2); virBufferAddLit(&buf, "</qemuCaps>\n"); -- 2.5.5