[libvirt] [PATCH 2/9] Implement cpuArchBaseline in generic CPU driver
Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com>
---
src/cpu/cpu_generic.c | 103 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 101 insertions(+), 2 deletions(-)
diff --git a/src/cpu/cpu_generic.c b/src/cpu/cpu_generic.c
index 16bc4b0..dc35b30 100644
--- a/src/cpu/cpu_generic.c
+++ b/src/cpu/cpu_generic.c
@@ -2,7 +2,7 @@
* cpu_generic.c: CPU manipulation driver for architectures which are not
* handled by their own driver
*
- * Copyright (C) 2009 Red Hat, Inc.
+ * Copyright (C) 2009--2010 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -24,6 +24,7 @@
#include <config.h>
+#include "memory.h"
#include "hash.h"
#include "cpu.h"
#include "cpu_generic.h"
@@ -109,6 +110,104 @@ cleanup:
}
+static virCPUDefPtr
+genericBaseline(unsigned int ncpus,
+ virCPUDefPtr *cpus,
+ unsigned int nmodels,
+ const char **models)
+{
+ virCPUDefPtr cpu = NULL;
+ virCPUFeatureDefPtr features = NULL;
+ unsigned int nfeatures;
+ unsigned int count;
+ unsigned int i, j;
+
+ if (models) {
+ bool found = false;
+ for (i = 0; i < nmodels; i++) {
+ if (STREQ(cpus[0]->model, models[i])) {
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ virCPUReportError(NULL, VIR_ERR_INTERNAL_ERROR,
+ _("CPU model '%s' is not support by hypervisor"),
+ cpus[0]->model);
+ goto error;
+ }
+ }
+
+ if (VIR_ALLOC(cpu) < 0 ||
+ !(cpu->arch = strdup(cpus[0]->arch)) ||
+ !(cpu->model = strdup(cpus[0]->model)) ||
+ VIR_ALLOC_N(features, cpus[0]->nfeatures) < 0)
+ goto no_memory;
+
+ cpu->type = VIR_CPU_TYPE_HOST;
+
+ count = nfeatures = cpus[0]->nfeatures;
+ for (i = 0; i < nfeatures; i++)
+ features[i].name = cpus[0]->features[i].name;
+
+ for (i = 1; i < ncpus; i++) {
+ virHashTablePtr hash;
+
+ if (STRNEQ(cpu->arch, cpus[i]->arch)) {
+ virCPUReportError(NULL, VIR_ERR_INTERNAL_ERROR,
+ _("CPUs have incompatible architectures: '%s' !=
'%s'"),
+ cpu->arch, cpus[i]->arch);
+ goto error;
+ }
+
+ if (STRNEQ(cpu->model, cpus[i]->model)) {
+ virCPUReportError(NULL, VIR_ERR_INTERNAL_ERROR,
+ _("CPU models don't match: '%s' !=
'%s'"),
+ cpu->model, cpus[i]->model);
+ goto error;
+ }
+
+ if (!(hash = genericHashFeatures(cpus[i])))
+ goto no_memory;
+
+ for (j = 0; j < nfeatures; j++) {
+ if (features[j].name &&
+ !virHashLookup(hash, features[j].name)) {
+ features[j].name = NULL;
+ count--;
+ }
+ }
+
+ virHashFree(hash, NULL);
+ }
+
+ if (VIR_ALLOC_N(cpu->features, count) < 0)
+ goto no_memory;
+ cpu->nfeatures = count;
+
+ j = 0;
+ for (i = 0; i < nfeatures; i++) {
+ if (!features[i].name)
+ continue;
+
+ if (!(cpu->features[j++].name = strdup(features[i].name)))
+ goto no_memory;
+ }
+
+cleanup:
+ VIR_FREE(features);
+
+ return cpu;
+
+no_memory:
+ virReportOOMError(NULL);
+error:
+ virCPUDefFree(cpu);
+ cpu = NULL;
+ goto cleanup;
+}
+
+
struct cpuArchDriver cpuDriverGeneric = {
.name = "generic",
.arch = NULL,
@@ -119,5 +218,5 @@ struct cpuArchDriver cpuDriverGeneric = {
.free = NULL,
.nodeData = NULL,
.guestData = NULL,
- .baseline = NULL,
+ .baseline = genericBaseline,
};
--
1.6.6.1