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Annoyingly there was no existing constructor, and identifying all the places which do a VIR_ALLOC(cpu) is a bit error prone. Hopefully this has found & converted them all. Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
266 lines
5.8 KiB
C
266 lines
5.8 KiB
C
/*
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* cpu_arm.c: CPU driver for arm CPUs
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*
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* Copyright (C) 2013 Red Hat, Inc.
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* Copyright (C) Canonical Ltd. 2012
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include "viralloc.h"
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#include "cpu.h"
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#include "cpu_map.h"
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#include "virstring.h"
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#include "virxml.h"
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#define VIR_FROM_THIS VIR_FROM_CPU
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static const virArch archs[] = {
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VIR_ARCH_ARMV6L,
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VIR_ARCH_ARMV7B,
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VIR_ARCH_ARMV7L,
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VIR_ARCH_AARCH64,
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};
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typedef struct _virCPUarmFeature virCPUarmFeature;
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typedef virCPUarmFeature *virCPUarmFeaturePtr;
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struct _virCPUarmFeature {
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char *name;
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};
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static virCPUarmFeaturePtr
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virCPUarmFeatureNew(void)
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{
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return g_new0(virCPUarmFeature, 1);
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}
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static void
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virCPUarmFeatureFree(virCPUarmFeaturePtr feature)
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{
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if (!feature)
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return;
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g_free(feature->name);
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g_free(feature);
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}
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(virCPUarmFeature, virCPUarmFeatureFree);
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typedef struct _virCPUarmMap virCPUarmMap;
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typedef virCPUarmMap *virCPUarmMapPtr;
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struct _virCPUarmMap {
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GPtrArray *features;
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};
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static virCPUarmMapPtr
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virCPUarmMapNew(void)
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{
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virCPUarmMapPtr map;
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map = g_new0(virCPUarmMap, 1);
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map->features = g_ptr_array_new();
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g_ptr_array_set_free_func(map->features,
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(GDestroyNotify) virCPUarmFeatureFree);
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return map;
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}
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static void
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virCPUarmMapFree(virCPUarmMapPtr map)
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{
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if (!map)
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return;
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g_ptr_array_free(map->features, TRUE);
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g_free(map);
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}
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(virCPUarmMap, virCPUarmMapFree);
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static virCPUarmFeaturePtr
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virCPUarmMapFeatureFind(virCPUarmMapPtr map,
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const char *name)
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{
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size_t i;
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for (i = 0; i < map->features->len; i++) {
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virCPUarmFeaturePtr feature = g_ptr_array_index(map->features, i);
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if (STREQ(feature->name, name))
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return feature;
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}
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return NULL;
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}
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static int
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virCPUarmMapFeatureParse(xmlXPathContextPtr ctxt G_GNUC_UNUSED,
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const char *name,
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void *data)
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{
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g_autoptr(virCPUarmFeature) feature = NULL;
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virCPUarmMapPtr map = data;
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if (virCPUarmMapFeatureFind(map, name)) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("CPU feature %s already defined"), name);
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return -1;
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}
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feature = virCPUarmFeatureNew();
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feature->name = g_strdup(name);
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g_ptr_array_add(map->features, g_steal_pointer(&feature));
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return 0;
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}
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static virCPUarmMapPtr
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virCPUarmLoadMap(void)
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{
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g_autoptr(virCPUarmMap) map = NULL;
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map = virCPUarmMapNew();
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if (cpuMapLoad("arm", NULL, virCPUarmMapFeatureParse, NULL, map) < 0)
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return NULL;
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return g_steal_pointer(&map);
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}
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static virCPUarmMapPtr cpuMap;
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int virCPUarmDriverOnceInit(void);
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VIR_ONCE_GLOBAL_INIT(virCPUarmDriver);
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int
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virCPUarmDriverOnceInit(void)
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{
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if (!(cpuMap = virCPUarmLoadMap()))
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return -1;
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return 0;
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}
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static virCPUarmMapPtr
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virCPUarmGetMap(void)
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{
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if (virCPUarmDriverInitialize() < 0)
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return NULL;
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return cpuMap;
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}
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static int
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virCPUarmUpdate(virCPUDefPtr guest,
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const virCPUDef *host)
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{
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int ret = -1;
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virCPUDefPtr updated = NULL;
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if (guest->mode != VIR_CPU_MODE_HOST_MODEL)
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return 0;
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if (!host) {
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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_("unknown host CPU model"));
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goto cleanup;
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}
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if (!(updated = virCPUDefCopyWithoutModel(guest)))
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goto cleanup;
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updated->mode = VIR_CPU_MODE_CUSTOM;
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if (virCPUDefCopyModel(updated, host, true) < 0)
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goto cleanup;
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virCPUDefStealModel(guest, updated, false);
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guest->mode = VIR_CPU_MODE_CUSTOM;
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guest->match = VIR_CPU_MATCH_EXACT;
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ret = 0;
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cleanup:
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virCPUDefFree(updated);
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return ret;
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}
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static virCPUDefPtr
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virCPUarmBaseline(virCPUDefPtr *cpus,
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unsigned int ncpus G_GNUC_UNUSED,
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virDomainCapsCPUModelsPtr models G_GNUC_UNUSED,
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const char **features G_GNUC_UNUSED,
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bool migratable G_GNUC_UNUSED)
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{
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virCPUDefPtr cpu = NULL;
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cpu = virCPUDefNew();
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cpu->model = g_strdup(cpus[0]->model);
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cpu->type = VIR_CPU_TYPE_GUEST;
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cpu->match = VIR_CPU_MATCH_EXACT;
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return cpu;
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}
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static virCPUCompareResult
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virCPUarmCompare(virCPUDefPtr host G_GNUC_UNUSED,
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virCPUDefPtr cpu G_GNUC_UNUSED,
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bool failMessages G_GNUC_UNUSED)
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{
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return VIR_CPU_COMPARE_IDENTICAL;
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}
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static int
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virCPUarmValidateFeatures(virCPUDefPtr cpu)
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{
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virCPUarmMapPtr map;
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size_t i;
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if (!(map = virCPUarmGetMap()))
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return -1;
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for (i = 0; i < cpu->nfeatures; i++) {
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virCPUFeatureDefPtr feature = &cpu->features[i];
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if (!virCPUarmMapFeatureFind(map, feature->name)) {
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
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_("unknown CPU feature: %s"),
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feature->name);
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return -1;
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}
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}
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return 0;
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}
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struct cpuArchDriver cpuDriverArm = {
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.name = "arm",
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.arch = archs,
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.narch = G_N_ELEMENTS(archs),
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.compare = virCPUarmCompare,
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.decode = NULL,
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.encode = NULL,
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.baseline = virCPUarmBaseline,
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.update = virCPUarmUpdate,
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.validateFeatures = virCPUarmValidateFeatures,
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};
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