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Implement cpuArchBaseline in x86 CPU driver

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This commit is contained in:
Jiri Denemark 2010-01-27 14:33:20 +01:00
parent 7b5ae2f077
commit 5130713ba1
1 changed files with 86 additions and 1 deletions
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87
src/cpu/cpu_x86.c
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@ -137,6 +137,17 @@ x86cpuidClearBits(struct cpuX86cpuid *cpuid,
}
static inline void
x86cpuidAndBits(struct cpuX86cpuid *cpuid,
const struct cpuX86cpuid *mask)
{
cpuid->eax &= mask->eax;
cpuid->ebx &= mask->ebx;
cpuid->ecx &= mask->ecx;
cpuid->edx &= mask->edx;
}
static struct cpuX86cpuid *
x86DataCpuid(const union cpuData *data,
uint32_t function)
@ -477,6 +488,27 @@ x86ModelSubtract(struct x86_model *model1,
}
static void
x86ModelIntersect(struct x86_model *model1,
const struct x86_model *model2)
{
int i;
struct cpuX86cpuid *cpuid;
for (i = 0; i < model1->ncpuid; i++) {
struct cpuX86cpuid *intersection = model1->cpuid + i;
cpuid = x86cpuidFind(model2->cpuid,
model2->ncpuid,
intersection->function);
if (cpuid != NULL)
x86cpuidAndBits(intersection, cpuid);
else
x86cpuidClearBits(intersection, intersection);
}
}
static int
x86ModelAdd(struct x86_model *model1,
const struct x86_model *model2)
@ -1192,6 +1224,59 @@ error:
#endif
static virCPUDefPtr
x86Baseline(virCPUDefPtr *cpus,
unsigned int ncpus,
const char **models,
unsigned int nmodels)
{
struct x86_map *map = NULL;
struct x86_model *base_model = NULL;
union cpuData *data = NULL;
virCPUDefPtr cpu = NULL;
unsigned int i;
if (!(map = x86LoadMap()))
goto error;
if (!(base_model = x86ModelFromCPU(cpus[0], map, 0)))
goto error;
if (VIR_ALLOC(cpu) < 0 ||
!(cpu->arch = strdup(cpus[0]->arch)))
goto no_memory;
for (i = 1; i < ncpus; i++) {
struct x86_model *model;
if (!(model = x86ModelFromCPU(cpus[i], map, 0)))
goto error;
x86ModelIntersect(base_model, model);
x86ModelFree(model);
}
if (!(data = x86DataFromModel(base_model)))
goto no_memory;
if (x86Decode(cpu, data, models, nmodels) < 0)
goto error;
cleanup:
x86DataFree(data);
x86ModelFree(base_model);
x86MapFree(map);
return cpu;
no_memory:
virReportOOMError();
error:
virCPUDefFree(cpu);
cpu = NULL;
goto cleanup;
}
struct cpuArchDriver cpuDriverX86 = {
.name = "x86",
.arch = archs,
@ -1206,5 +1291,5 @@ struct cpuArchDriver cpuDriverX86 = {
.nodeData = NULL,
#endif
.guestData = x86GuestData,
.baseline = NULL,
.baseline = x86Baseline,
};