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Guest CPU definitions with mode='custom' and missing <vendor> are expected to run on a host CPU from any vendor as long as the required CPU model can be used as a guest CPU on the host. But even though no CPU vendor was explicitly requested we would sometimes force it due to a bug in virCPUUpdate and virCPUTranslate. The bug would effectively forbid cross vendor migrations even if they were previously working just fine. Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
186 lines
4.4 KiB
C
186 lines
4.4 KiB
C
/*
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* cpu_conf.h: CPU XML handling
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*
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* Copyright (C) 2009-2011, 2013, 2014 Red Hat, Inc.
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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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* Authors:
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* Jiri Denemark <jdenemar@redhat.com>
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*/
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#ifndef __VIR_CPU_CONF_H__
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# define __VIR_CPU_CONF_H__
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# include "virutil.h"
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# include "virbuffer.h"
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# include "virxml.h"
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# include "virbitmap.h"
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# include "virarch.h"
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# include "numa_conf.h"
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# define VIR_CPU_VENDOR_ID_LENGTH 12
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typedef enum {
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VIR_CPU_TYPE_HOST,
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VIR_CPU_TYPE_GUEST,
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VIR_CPU_TYPE_AUTO,
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VIR_CPU_TYPE_LAST
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} virCPUType;
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VIR_ENUM_DECL(virCPU)
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typedef enum {
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VIR_CPU_MODE_CUSTOM,
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VIR_CPU_MODE_HOST_MODEL,
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VIR_CPU_MODE_HOST_PASSTHROUGH,
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VIR_CPU_MODE_LAST
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} virCPUMode;
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VIR_ENUM_DECL(virCPUMode)
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typedef enum {
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VIR_CPU_MATCH_MINIMUM,
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VIR_CPU_MATCH_EXACT,
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VIR_CPU_MATCH_STRICT,
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VIR_CPU_MATCH_LAST
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} virCPUMatch;
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VIR_ENUM_DECL(virCPUMatch)
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typedef enum {
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VIR_CPU_FALLBACK_ALLOW,
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VIR_CPU_FALLBACK_FORBID,
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VIR_CPU_FALLBACK_LAST
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} virCPUFallback;
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VIR_ENUM_DECL(virCPUFallback)
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typedef enum {
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VIR_CPU_FEATURE_FORCE,
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VIR_CPU_FEATURE_REQUIRE,
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VIR_CPU_FEATURE_OPTIONAL,
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VIR_CPU_FEATURE_DISABLE,
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VIR_CPU_FEATURE_FORBID,
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VIR_CPU_FEATURE_LAST
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} virCPUFeaturePolicy;
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VIR_ENUM_DECL(virCPUFeaturePolicy)
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typedef struct _virCPUFeatureDef virCPUFeatureDef;
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typedef virCPUFeatureDef *virCPUFeatureDefPtr;
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struct _virCPUFeatureDef {
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char *name;
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int policy; /* enum virCPUFeaturePolicy */
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};
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typedef struct _virCPUDef virCPUDef;
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typedef virCPUDef *virCPUDefPtr;
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struct _virCPUDef {
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int type; /* enum virCPUType */
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int mode; /* enum virCPUMode */
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int match; /* enum virCPUMatch */
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virArch arch;
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char *model;
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char *vendor_id; /* vendor id returned by CPUID in the guest */
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int fallback; /* enum virCPUFallback */
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char *vendor;
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unsigned int sockets;
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unsigned int cores;
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unsigned int threads;
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size_t nfeatures;
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size_t nfeatures_max;
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virCPUFeatureDefPtr features;
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};
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void ATTRIBUTE_NONNULL(1)
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virCPUDefFreeModel(virCPUDefPtr def);
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void
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virCPUDefFree(virCPUDefPtr def);
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int ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
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virCPUDefCopyModel(virCPUDefPtr dst,
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const virCPUDef *src,
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bool resetPolicy);
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/*
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* Returns true if feature @name should copied, false otherwise.
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*/
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typedef bool (*virCPUDefFeatureFilter)(const char *name,
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void *opaque);
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int
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virCPUDefCopyModelFilter(virCPUDefPtr dst,
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const virCPUDef *src,
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bool resetPolicy,
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virCPUDefFeatureFilter filter,
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void *opaque)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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void
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virCPUDefStealModel(virCPUDefPtr dst,
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virCPUDefPtr src,
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bool keepVendor);
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virCPUDefPtr
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virCPUDefCopy(const virCPUDef *cpu);
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virCPUDefPtr
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virCPUDefCopyWithoutModel(const virCPUDef *cpu);
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virCPUDefPtr
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virCPUDefParseXML(xmlNodePtr node,
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xmlXPathContextPtr ctxt,
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virCPUType mode);
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bool
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virCPUDefIsEqual(virCPUDefPtr src,
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virCPUDefPtr dst);
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char *
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virCPUDefFormat(virCPUDefPtr def,
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virDomainNumaPtr numa,
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bool updateCPU);
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int
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virCPUDefFormatBuf(virBufferPtr buf,
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virCPUDefPtr def,
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bool updateCPU);
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int
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virCPUDefFormatBufFull(virBufferPtr buf,
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virCPUDefPtr def,
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virDomainNumaPtr numa,
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bool updateCPU);
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int
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virCPUDefAddFeature(virCPUDefPtr cpu,
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const char *name,
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int policy);
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int
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virCPUDefUpdateFeature(virCPUDefPtr cpu,
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const char *name,
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int policy);
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#endif /* __VIR_CPU_CONF_H__ */
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