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From b6f5a9033bbed6d3b4567544b7f6556c7b4e1861 Mon Sep 17 00:00:00 2001
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Message-Id: <b6f5a9033bbed6d3b4567544b7f6556c7b4e1861@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Wed, 24 Aug 2016 16:10:51 -0400
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Subject: [PATCH] qemu: Add cpu ID to the vCPU pid list in the status XML
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https://bugzilla.redhat.com/show_bug.cgi?id=1097930
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https://bugzilla.redhat.com/show_bug.cgi?id=1224341
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Note the vcpu ID so that once we allow non-contiguous vCPU topologies it
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will be possible to pair thread id's with the vcpus.
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(cherry picked from commit 3f57ce4a7675958c4c0f6aaddfbc2e3c2e8473da)
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---
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 src/qemu/qemu_domain.c  | 13 ++++++++++++-
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 tests/qemuxml2xmltest.c |  3 ++-
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 2 files changed, 14 insertions(+), 2 deletions(-)
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diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
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index 01f0d6a..c27129e 100644
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--- a/src/qemu/qemu_domain.c
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+++ b/src/qemu/qemu_domain.c
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@@ -1368,7 +1368,7 @@ qemuDomainObjPrivateXMLFormatVcpus(virBufferPtr buf,
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     virBufferAdjustIndent(buf, 2);
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     for (i = 0; i < nvcpupids; i++)
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-        virBufferAsprintf(buf, "<vcpu pid='%d'/>\n", vcpupids[i]);
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+        virBufferAsprintf(buf, "<vcpu id='%zu' pid='%d'/>\n", i, vcpupids[i]);
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     virBufferAdjustIndent(buf, -2);
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     virBufferAddLit(buf, "</vcpus>\n");
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@@ -1497,9 +1497,19 @@ qemuDomainObjPrivateXMLParseVcpu(xmlNodePtr node,
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                                  unsigned int idx,
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                                  qemuDomainObjPrivatePtr priv)
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 {
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+    char *idstr;
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     char *pidstr;
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     int ret = -1;
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+    if ((idstr = virXMLPropString(node, "id"))) {
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+        if (virStrToLong_uip(idstr, NULL, 10, &idx) < 0 ||
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+            idx >= priv->nvcpupids) {
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+            virReportError(VIR_ERR_INTERNAL_ERROR,
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+                           _("invalid vcpu index '%s'"), idstr);
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+            goto cleanup;
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+        }
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+    }
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+
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     if (!(pidstr = virXMLPropString(node, "pid")))
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         goto cleanup;
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@@ -1509,6 +1519,7 @@ qemuDomainObjPrivateXMLParseVcpu(xmlNodePtr node,
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     ret = 0;
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  cleanup:
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+    VIR_FREE(idstr);
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     VIR_FREE(pidstr);
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     return ret;
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 }
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diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
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index 573899f..639494b 100644
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--- a/tests/qemuxml2xmltest.c
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+++ b/tests/qemuxml2xmltest.c
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@@ -113,7 +113,8 @@ testGetStatuXMLPrefixVcpus(virBufferPtr buf,
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     virBufferAdjustIndent(buf, 2);
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     while ((vcpuid = virBitmapNextSetBit(data->activeVcpus, vcpuid)) >= 0)
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-        virBufferAsprintf(buf, "<vcpu pid='%zd'/>\n", vcpuid + 3803519);
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+        virBufferAsprintf(buf, "<vcpu id='%zd' pid='%zd'/>\n",
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+                          vcpuid, vcpuid + 3803519);
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     virBufferAdjustIndent(buf, -2);
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     virBufferAddLit(buf, "</vcpus>\n");
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-- 
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2.10.0
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