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cpu_x86: Log decoded CPU model and signatures
The log message may be useful when debugging why a specific CPU model was selected for a given set of CPUID data. Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
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@ -1773,6 +1773,26 @@ x86ModelHasSignature(virCPUx86ModelPtr model,
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}
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static char *
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x86FormatSignatures(virCPUx86ModelPtr model)
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{
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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size_t i;
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for (i = 0; i < model->nsignatures; i++) {
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virBufferAsprintf(&buf, "%06lx,",
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(unsigned long)model->signatures[i]);
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}
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virBufferTrim(&buf, ",", -1);
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if (virBufferCheckError(&buf) < 0)
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return NULL;
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return virBufferContentAndReset(&buf);
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}
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/*
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* Checks whether a candidate model is a better fit for the CPU data than the
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* current model.
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@ -1896,6 +1916,7 @@ x86Decode(virCPUDefPtr cpu,
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virCPUx86Data features = VIR_CPU_X86_DATA_INIT;
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virCPUx86VendorPtr vendor;
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virDomainCapsCPUModelPtr hvModel = NULL;
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VIR_AUTOFREE(char *) sigs = NULL;
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uint32_t signature;
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ssize_t i;
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int rc;
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@ -1988,6 +2009,11 @@ x86Decode(virCPUDefPtr cpu,
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if (vendor && VIR_STRDUP(cpu->vendor, vendor->name) < 0)
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goto cleanup;
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sigs = x86FormatSignatures(model);
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VIR_DEBUG("Using CPU model %s (signatures %s) for CPU with signature %06lx",
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model->name, NULLSTR(sigs), (unsigned long)signature);
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VIR_STEAL_PTR(cpu->model, cpuModel->model);
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VIR_STEAL_PTR(cpu->features, cpuModel->features);
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cpu->nfeatures = cpuModel->nfeatures;
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