[libvirt] [PATCH v3] Add flag to BaselineCPU API to return detailed CPU features
Don Dugger
n0ano at n0ano.com
Mon Aug 12 14:43:03 UTC 2013
Has anybody had a chance to review this patch?
On Fri, Aug 02, 2013 at 01:08:19PM -0600, n0ano wrote:
>
> Currently the virConnectBaselineCPU API does not expose the CPU features
> that are part of the CPU's model. This patch adds a new flag,
> VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, that causes the API to explictly
> list all features that are part of that model.
>
> Signed-off-by: Don Dugger <donald.d.dugger at intel.com>
>
> ---
> [V2 - per review comments change the flag name to be more descriptive
> and change errors from warnings to propogated errors.]
>
> [V3 - Incorporate review suggestions to better handle flags and errors.
> Also add documentation about the API change.]
>
> include/libvirt/libvirt.h.in | 9 ++++++
> src/cpu/cpu.c | 12 ++++---
> src/cpu/cpu.h | 12 ++++---
> src/cpu/cpu_arm.c | 6 +++-
> src/cpu/cpu_generic.c | 5 ++-
> src/cpu/cpu_powerpc.c | 10 ++++--
> src/cpu/cpu_s390.c | 6 +++-
> src/cpu/cpu_x86.c | 45 ++++++++++++++++++++++++---
> src/libvirt.c | 7 ++++-
> src/qemu/qemu_driver.c | 4 +--
> tests/cputest.c | 30 +++++++++---------
> tests/cputestdata/x86-baseline-3-result.xml | 35 +++++++++++++++++++++
> tests/cputestdata/x86-baseline-3.xml | 7 +++++
> tools/virsh-domain.c | 10 +++++-
> tools/virsh.pod | 7 +++--
> 15 files changed, 166 insertions(+), 39 deletions(-)
> create mode 100644 tests/cputestdata/x86-baseline-3-result.xml
> create mode 100644 tests/cputestdata/x86-baseline-3.xml
>
> diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
> index 7bd3559..b843355 100644
> --- a/include/libvirt/libvirt.h.in
> +++ b/include/libvirt/libvirt.h.in
> @@ -4008,6 +4008,15 @@ int virConnectCompareCPU(virConnectPtr conn,
>
>
> /**
> + * virConnectBaselineCPUFlags
> + *
> + * Flags when getting XML description of a computed CPU
> + */
> +typedef enum {
> + VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES = (1 << 0), /* show all features */
> +} virConnectBaselineCPUFlags;
> +
> +/**
> * virConnectBaselineCPU:
> *
> * @conn: virConnect connection
> diff --git a/src/cpu/cpu.c b/src/cpu/cpu.c
> index 4124354..023ce26 100644
> --- a/src/cpu/cpu.c
> +++ b/src/cpu/cpu.c
> @@ -167,7 +167,7 @@ cpuDecode(virCPUDefPtr cpu,
> return -1;
> }
>
> - return driver->decode(cpu, data, models, nmodels, preferred);
> + return driver->decode(cpu, data, models, nmodels, preferred, 0);
> }
>
>
> @@ -276,7 +276,8 @@ char *
> cpuBaselineXML(const char **xmlCPUs,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels)
> + unsigned int nmodels,
> + unsigned int flags)
> {
> xmlDocPtr doc = NULL;
> xmlXPathContextPtr ctxt = NULL;
> @@ -323,7 +324,7 @@ cpuBaselineXML(const char **xmlCPUs,
> doc = NULL;
> }
>
> - if (!(cpu = cpuBaseline(cpus, ncpus, models, nmodels)))
> + if (!(cpu = cpuBaseline(cpus, ncpus, models, nmodels, flags)))
> goto error;
>
> cpustr = virCPUDefFormat(cpu, 0);
> @@ -350,7 +351,8 @@ virCPUDefPtr
> cpuBaseline(virCPUDefPtr *cpus,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels)
> + unsigned int nmodels,
> + unsigned int flags)
> {
> struct cpuArchDriver *driver;
> size_t i;
> @@ -392,7 +394,7 @@ cpuBaseline(virCPUDefPtr *cpus,
> return NULL;
> }
>
> - return driver->baseline(cpus, ncpus, models, nmodels);
> + return driver->baseline(cpus, ncpus, models, nmodels, flags);
> }
>
>
> diff --git a/src/cpu/cpu.h b/src/cpu/cpu.h
> index 4003435..7f1d4bd 100644
> --- a/src/cpu/cpu.h
> +++ b/src/cpu/cpu.h
> @@ -53,7 +53,8 @@ typedef int
> const virCPUDataPtr data,
> const char **models,
> unsigned int nmodels,
> - const char *preferred);
> + const char *preferred,
> + unsigned int flags);
>
> typedef int
> (*cpuArchEncode) (virArch arch,
> @@ -81,7 +82,8 @@ typedef virCPUDefPtr
> (*cpuArchBaseline) (virCPUDefPtr *cpus,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels);
> + unsigned int nmodels,
> + unsigned int flags);
>
> typedef int
> (*cpuArchUpdate) (virCPUDefPtr guest,
> @@ -149,13 +151,15 @@ extern char *
> cpuBaselineXML(const char **xmlCPUs,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels);
> + unsigned int nmodels,
> + unsigned int flags);
>
> extern virCPUDefPtr
> cpuBaseline (virCPUDefPtr *cpus,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels);
> + unsigned int nmodels,
> + unsigned int flags);
>
> extern int
> cpuUpdate (virCPUDefPtr guest,
> diff --git a/src/cpu/cpu_arm.c b/src/cpu/cpu_arm.c
> index 25e25ba..d1b2a99 100644
> --- a/src/cpu/cpu_arm.c
> +++ b/src/cpu/cpu_arm.c
> @@ -44,8 +44,12 @@ ArmDecode(virCPUDefPtr cpu ATTRIBUTE_UNUSED,
> const virCPUDataPtr data ATTRIBUTE_UNUSED,
> const char **models ATTRIBUTE_UNUSED,
> unsigned int nmodels ATTRIBUTE_UNUSED,
> - const char *preferred ATTRIBUTE_UNUSED)
> + const char *preferred ATTRIBUTE_UNUSED,
> + unsigned int flags)
> {
> +
> + virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, -1);
> +
> return 0;
> }
>
> diff --git a/src/cpu/cpu_generic.c b/src/cpu/cpu_generic.c
> index 2fe792f..1264da4 100644
> --- a/src/cpu/cpu_generic.c
> +++ b/src/cpu/cpu_generic.c
> @@ -113,7 +113,8 @@ static virCPUDefPtr
> genericBaseline(virCPUDefPtr *cpus,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels)
> + unsigned int nmodels,
> + unsigned int flags)
> {
> virCPUDefPtr cpu = NULL;
> virCPUFeatureDefPtr features = NULL;
> @@ -121,6 +122,8 @@ genericBaseline(virCPUDefPtr *cpus,
> unsigned int count;
> size_t i, j;
>
> + virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, NULL);
> +
> if (!cpuModelIsAllowed(cpus[0]->model, models, nmodels)) {
> virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> _("CPU model %s is not supported by hypervisor"),
> diff --git a/src/cpu/cpu_powerpc.c b/src/cpu/cpu_powerpc.c
> index 55a4153..647a8a1 100644
> --- a/src/cpu/cpu_powerpc.c
> +++ b/src/cpu/cpu_powerpc.c
> @@ -304,12 +304,15 @@ ppcDecode(virCPUDefPtr cpu,
> const virCPUDataPtr data,
> const char **models,
> unsigned int nmodels,
> - const char *preferred ATTRIBUTE_UNUSED)
> + const char *preferred ATTRIBUTE_UNUSED,
> + unsigned int flags)
> {
> int ret = -1;
> struct ppc_map *map;
> const struct ppc_model *model;
>
> + virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, -1);
> +
> if (data == NULL || (map = ppcLoadMap()) == NULL)
> return -1;
>
> @@ -377,7 +380,8 @@ static virCPUDefPtr
> ppcBaseline(virCPUDefPtr *cpus,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels)
> + unsigned int nmodels,
> + unsigned int flags)
> {
> struct ppc_map *map = NULL;
> const struct ppc_model *model;
> @@ -385,6 +389,8 @@ ppcBaseline(virCPUDefPtr *cpus,
> virCPUDefPtr cpu = NULL;
> size_t i;
>
> + virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, NULL);
> +
> if (!(map = ppcLoadMap()))
> goto error;
>
> diff --git a/src/cpu/cpu_s390.c b/src/cpu/cpu_s390.c
> index cbfae42..d997e06 100644
> --- a/src/cpu/cpu_s390.c
> +++ b/src/cpu/cpu_s390.c
> @@ -48,8 +48,12 @@ s390Decode(virCPUDefPtr cpu ATTRIBUTE_UNUSED,
> const virCPUDataPtr data ATTRIBUTE_UNUSED,
> const char **models ATTRIBUTE_UNUSED,
> unsigned int nmodels ATTRIBUTE_UNUSED,
> - const char *preferred ATTRIBUTE_UNUSED)
> + const char *preferred ATTRIBUTE_UNUSED,
> + unsigned int flags)
> {
> +
> + virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, -1);
> +
> return 0;
> }
>
> diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
> index a388f0f..f16a3cb 100644
> --- a/src/cpu/cpu_x86.c
> +++ b/src/cpu/cpu_x86.c
> @@ -1319,13 +1319,41 @@ x86GuestData(virCPUDefPtr host,
> return x86Compute(host, guest, data, message);
> }
>
> +static int
> +x86AddFeatures(virCPUDefPtr cpu,
> + struct x86_map *map)
> +{
> + const struct x86_model *candidate;
> + const struct x86_feature *feature = map->features;
> +
> + candidate = map->models;
> + while (candidate != NULL) {
> + if (STREQ(cpu->model, candidate->name))
> + break;
> + candidate = candidate->next;
> + }
> + if (!candidate) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("%s not a known CPU model"), cpu->model);
> + return -1;
> + }
> + while (feature != NULL) {
> + if (x86DataIsSubset(candidate->data, feature->data) &&
> + (virCPUDefAddFeature(cpu, feature->name, VIR_CPU_FEATURE_REQUIRE) < 0))
> + return -1;
> + feature = feature->next;
> + }
> + return 0;
> +}
> +
>
> static int
> x86Decode(virCPUDefPtr cpu,
> const struct cpuX86Data *data,
> const char **models,
> unsigned int nmodels,
> - const char *preferred)
> + const char *preferred,
> + unsigned int flags)
> {
> int ret = -1;
> struct x86_map *map;
> @@ -1334,6 +1362,8 @@ x86Decode(virCPUDefPtr cpu,
> virCPUDefPtr cpuModel = NULL;
> size_t i;
>
> + virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, -1);
> +
> if (data == NULL || (map = x86LoadMap()) == NULL)
> return -1;
>
> @@ -1406,6 +1436,9 @@ x86Decode(virCPUDefPtr cpu,
> goto out;
> }
>
> + if (flags & VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES &&
> + (x86AddFeatures(cpuModel, map) < 0))
> + goto out;
> cpu->model = cpuModel->model;
> cpu->vendor = cpuModel->vendor;
> cpu->nfeatures = cpuModel->nfeatures;
> @@ -1426,9 +1459,10 @@ x86DecodeCPUData(virCPUDefPtr cpu,
> const virCPUDataPtr data,
> const char **models,
> unsigned int nmodels,
> - const char *preferred)
> + const char *preferred,
> + unsigned int flags)
> {
> - return x86Decode(cpu, data->data.x86, models, nmodels, preferred);
> + return x86Decode(cpu, data->data.x86, models, nmodels, preferred, flags);
> }
>
>
> @@ -1674,7 +1708,8 @@ static virCPUDefPtr
> x86Baseline(virCPUDefPtr *cpus,
> unsigned int ncpus,
> const char **models,
> - unsigned int nmodels)
> + unsigned int nmodels,
> + unsigned int flags)
> {
> struct x86_map *map = NULL;
> struct x86_model *base_model = NULL;
> @@ -1755,7 +1790,7 @@ x86Baseline(virCPUDefPtr *cpus,
> if (vendor && x86DataAddCpuid(base_model->data, &vendor->cpuid) < 0)
> goto error;
>
> - if (x86Decode(cpu, base_model->data, models, nmodels, NULL) < 0)
> + if (x86Decode(cpu, base_model->data, models, nmodels, NULL, flags) < 0)
> goto error;
>
> if (!outputVendor)
> diff --git a/src/libvirt.c b/src/libvirt.c
> index 8157488..6ce6c32 100644
> --- a/src/libvirt.c
> +++ b/src/libvirt.c
> @@ -18522,11 +18522,16 @@ error:
> * @conn: virConnect connection
> * @xmlCPUs: array of XML descriptions of host CPUs
> * @ncpus: number of CPUs in xmlCPUs
> - * @flags: extra flags; not used yet, so callers should always pass 0
> + * @flags: bitwise-OR of virConnectBaselineCPUFlags
> *
> * Computes the most feature-rich CPU which is compatible with all given
> * host CPUs.
> *
> + * If @flags includes VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES then libvirt
> + * will explicitly list all CPU features that are part of the host CPU,
> + * without this flag features that are part of the CPU model will not be
> + * listed.
> + *
> * Returns XML description of the computed CPU or NULL on error.
> */
> char *
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index 2daafa8..2ad236e 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -11056,12 +11056,12 @@ qemuConnectBaselineCPU(virConnectPtr conn ATTRIBUTE_UNUSED,
> {
> char *cpu = NULL;
>
> - virCheckFlags(0, NULL);
> + virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, NULL);
>
> if (virConnectBaselineCPUEnsureACL(conn) < 0)
> goto cleanup;
>
> - cpu = cpuBaselineXML(xmlCPUs, ncpus, NULL, 0);
> + cpu = cpuBaselineXML(xmlCPUs, ncpus, NULL, 0, flags);
>
> cleanup:
> return cpu;
> diff --git a/tests/cputest.c b/tests/cputest.c
> index 2e5f0cd..959cb9f 100644
> --- a/tests/cputest.c
> +++ b/tests/cputest.c
> @@ -75,6 +75,7 @@ struct data {
> const char *modelsName;
> unsigned int nmodels;
> const char *preferred;
> + unsigned int flags;
> int result;
> };
>
> @@ -330,7 +331,7 @@ cpuTestBaseline(const void *arg)
> if (!(cpus = cpuTestLoadMultiXML(data->arch, data->name, &ncpus)))
> goto cleanup;
>
> - baseline = cpuBaseline(cpus, ncpus, NULL, 0);
> + baseline = cpuBaseline(cpus, ncpus, NULL, 0, data->flags);
> if (data->result < 0) {
> virResetLastError();
> if (!baseline)
> @@ -510,12 +511,12 @@ mymain(void)
> }
>
> #define DO_TEST(arch, api, name, host, cpu, \
> - models, nmodels, preferred, result) \
> + models, nmodels, preferred, flags, result) \
> do { \
> static struct data data = { \
> arch, api, host, cpu, models, \
> models == NULL ? NULL : #models, \
> - nmodels, preferred, result \
> + nmodels, preferred, flags, result \
> }; \
> if (cpuTestRun(name, &data) < 0) \
> ret = -1; \
> @@ -524,31 +525,31 @@ mymain(void)
> #define DO_TEST_COMPARE(arch, host, cpu, result) \
> DO_TEST(arch, API_COMPARE, \
> host "/" cpu " (" #result ")", \
> - host, cpu, NULL, 0, NULL, result)
> + host, cpu, NULL, 0, NULL, 0, result)
>
> #define DO_TEST_UPDATE(arch, host, cpu, result) \
> do { \
> DO_TEST(arch, API_UPDATE, \
> cpu " on " host, \
> - host, cpu, NULL, 0, NULL, 0); \
> + host, cpu, NULL, 0, NULL, 0, 0); \
> DO_TEST_COMPARE(arch, host, host "+" cpu, result); \
> } while (0)
>
> -#define DO_TEST_BASELINE(arch, name, result) \
> +#define DO_TEST_BASELINE(arch, name, flags, result) \
> DO_TEST(arch, API_BASELINE, name, NULL, "baseline-" name, \
> - NULL, 0, NULL, result)
> + NULL, 0, NULL, flags, result)
>
> #define DO_TEST_HASFEATURE(arch, host, feature, result) \
> DO_TEST(arch, API_HAS_FEATURE, \
> host "/" feature " (" #result ")", \
> - host, feature, NULL, 0, NULL, result)
> + host, feature, NULL, 0, NULL, 0, result)
>
> #define DO_TEST_GUESTDATA(arch, host, cpu, models, preferred, result) \
> DO_TEST(arch, API_GUEST_DATA, \
> host "/" cpu " (" #models ", pref=" #preferred ")", \
> host, cpu, models, \
> models == NULL ? 0 : sizeof(models) / sizeof(char *), \
> - preferred, result)
> + preferred, 0, result)
>
> /* host to host comparison */
> DO_TEST_COMPARE("x86", "host", "host", VIR_CPU_COMPARE_IDENTICAL);
> @@ -593,11 +594,12 @@ mymain(void)
> DO_TEST_UPDATE("x86", "host", "host-passthrough", VIR_CPU_COMPARE_IDENTICAL);
>
> /* computing baseline CPUs */
> - DO_TEST_BASELINE("x86", "incompatible-vendors", -1);
> - DO_TEST_BASELINE("x86", "no-vendor", 0);
> - DO_TEST_BASELINE("x86", "some-vendors", 0);
> - DO_TEST_BASELINE("x86", "1", 0);
> - DO_TEST_BASELINE("x86", "2", 0);
> + DO_TEST_BASELINE("x86", "incompatible-vendors", 0, -1);
> + DO_TEST_BASELINE("x86", "no-vendor", 0, 0);
> + DO_TEST_BASELINE("x86", "some-vendors", 0, 0);
> + DO_TEST_BASELINE("x86", "1", 0, 0);
> + DO_TEST_BASELINE("x86", "2", 0, 0);
> + DO_TEST_BASELINE("x86", "3", VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, 0);
>
> /* CPU features */
> DO_TEST_HASFEATURE("x86", "host", "vmx", YES);
> diff --git a/tests/cputestdata/x86-baseline-3-result.xml b/tests/cputestdata/x86-baseline-3-result.xml
> new file mode 100644
> index 0000000..d196112
> --- /dev/null
> +++ b/tests/cputestdata/x86-baseline-3-result.xml
> @@ -0,0 +1,35 @@
> +<cpu mode='custom' match='exact'>
> + <model fallback='allow'>Westmere</model>
> + <feature policy='require' name='lahf_lm'/>
> + <feature policy='require' name='lm'/>
> + <feature policy='require' name='nx'/>
> + <feature policy='require' name='syscall'/>
> + <feature policy='require' name='aes'/>
> + <feature policy='require' name='popcnt'/>
> + <feature policy='require' name='sse4.2'/>
> + <feature policy='require' name='sse4.1'/>
> + <feature policy='require' name='cx16'/>
> + <feature policy='require' name='ssse3'/>
> + <feature policy='require' name='pni'/>
> + <feature policy='require' name='sse2'/>
> + <feature policy='require' name='sse'/>
> + <feature policy='require' name='fxsr'/>
> + <feature policy='require' name='mmx'/>
> + <feature policy='require' name='clflush'/>
> + <feature policy='require' name='pse36'/>
> + <feature policy='require' name='pat'/>
> + <feature policy='require' name='cmov'/>
> + <feature policy='require' name='mca'/>
> + <feature policy='require' name='pge'/>
> + <feature policy='require' name='mtrr'/>
> + <feature policy='require' name='sep'/>
> + <feature policy='require' name='apic'/>
> + <feature policy='require' name='cx8'/>
> + <feature policy='require' name='mce'/>
> + <feature policy='require' name='pae'/>
> + <feature policy='require' name='msr'/>
> + <feature policy='require' name='tsc'/>
> + <feature policy='require' name='pse'/>
> + <feature policy='require' name='de'/>
> + <feature policy='require' name='fpu'/>
> +</cpu>
> diff --git a/tests/cputestdata/x86-baseline-3.xml b/tests/cputestdata/x86-baseline-3.xml
> new file mode 100644
> index 0000000..7654a1d
> --- /dev/null
> +++ b/tests/cputestdata/x86-baseline-3.xml
> @@ -0,0 +1,7 @@
> +<cpuTest>
> +<cpu>
> + <arch>x86_64</arch>
> + <model>Westmere</model>
> + <topology sockets='1' cores='2' threads='1'/>
> +</cpu>
> +</cpuTest>
> diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
> index 8cafce4..a1d5ab4 100644
> --- a/tools/virsh-domain.c
> +++ b/tools/virsh-domain.c
> @@ -6148,6 +6148,10 @@ static const vshCmdOptDef opts_cpu_baseline[] = {
> .flags = VSH_OFLAG_REQ,
> .help = N_("file containing XML CPU descriptions")
> },
> + {.name = "features",
> + .type = VSH_OT_BOOL,
> + .help = N_("Show features that are part of the CPU model type")
> + },
> {.name = NULL}
> };
>
> @@ -6159,6 +6163,7 @@ cmdCPUBaseline(vshControl *ctl, const vshCmd *cmd)
> char *buffer;
> char *result = NULL;
> const char **list = NULL;
> + unsigned int flags = 0;
> int count = 0;
>
> xmlDocPtr xml = NULL;
> @@ -6168,6 +6173,9 @@ cmdCPUBaseline(vshControl *ctl, const vshCmd *cmd)
> virBuffer buf = VIR_BUFFER_INITIALIZER;
> size_t i;
>
> + if (vshCommandOptBool(cmd, "model_features"))
> + flags |= VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES;
> +
> if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0)
> return false;
>
> @@ -6211,7 +6219,7 @@ cmdCPUBaseline(vshControl *ctl, const vshCmd *cmd)
> list[i] = vshStrdup(ctl, (const char *)xmlBufferContent(xml_buf));
> }
>
> - result = virConnectBaselineCPU(ctl->conn, list, count, 0);
> + result = virConnectBaselineCPU(ctl->conn, list, count, flags);
>
> if (result) {
> vshPrint(ctl, "%s", result);
> diff --git a/tools/virsh.pod b/tools/virsh.pod
> index 3ff6da1..0ae5178 100644
> --- a/tools/virsh.pod
> +++ b/tools/virsh.pod
> @@ -485,13 +485,16 @@ cell and the total free memory on the machine. Finally, with a
> numeric argument or with --cellno plus a cell number it will display
> the free memory for the specified cell only.
>
> -=item B<cpu-baseline> I<FILE>
> +=item B<cpu-baseline> I<FILE> [I<--features>]
>
> Compute baseline CPU which will be supported by all host CPUs given in <file>.
> The list of host CPUs is built by extracting all <cpu> elements from the
> <file>. Thus, the <file> can contain either a set of <cpu> elements separated
> by new lines or even a set of complete <capabilities> elements printed by
> -B<capabilities> command.
> +B<capabilities> command. If I<--features> is specified then the
> +resulting XML description will explicitly include all features that make
> +up the CPU, without this option features that are part of the CPU model
> +will not be listed in the XML description.
>
> =item B<cpu-compare> I<FILE>
>
> --
> 1.7.10.4
>
> --
> Don Dugger
> "Censeo Toto nos in Kansa esse decisse." - D. Gale
> n0ano at n0ano.com
> Ph: 303/443-3786
--
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
n0ano at n0ano.com
Ph: 303/443-3786
More information about the libvir-list
mailing list