NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
};
+static const char *kvm_feature_name[] = {
+ "kvmclock", "kvm_nopiodelay", "kvm_mmu", NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+};
+
static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features,
uint32_t *ext_features,
uint32_t *ext2_features,
- uint32_t *ext3_features)
+ uint32_t *ext3_features,
+ uint32_t *kvm_features)
{
int i;
int found = 0;
*ext3_features |= 1 << i;
found = 1;
}
+ for ( i = 0 ; i < 32 ; i++ )
+ if (kvm_feature_name[i] && !strcmp (flagname, kvm_feature_name[i])) {
+ *kvm_features |= 1 << i;
+ found = 1;
+ }
+
if (!found) {
fprintf(stderr, "CPU feature %s not found\n", flagname);
}
int family;
int model;
int stepping;
- uint32_t features, ext_features, ext2_features, ext3_features;
+ uint32_t features, ext_features, ext2_features, ext3_features, kvm_features;
uint32_t xlevel;
char model_id[48];
int vendor_override;
char *s = strdup(cpu_model);
char *featurestr, *name = strtok(s, ",");
- uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0;
- uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0;
+ uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0, plus_kvm_features = 0;
+ uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0, minus_kvm_features = 0;
uint32_t numvalue;
def = NULL;
memcpy(x86_cpu_def, def, sizeof(*def));
}
+ plus_kvm_features = ~0; /* not supported bits will be filtered out later */
+
add_flagname_to_bitmaps("hypervisor", &plus_features,
- &plus_ext_features, &plus_ext2_features, &plus_ext3_features);
+ &plus_ext_features, &plus_ext2_features, &plus_ext3_features,
+ &plus_kvm_features);
featurestr = strtok(NULL, ",");
while (featurestr) {
char *val;
if (featurestr[0] == '+') {
- add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features);
+ add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features, &plus_kvm_features);
} else if (featurestr[0] == '-') {
- add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features);
+ add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features, &minus_kvm_features);
} else if ((val = strchr(featurestr, '='))) {
*val = 0; val++;
if (!strcmp(featurestr, "family")) {
x86_cpu_def->ext_features |= plus_ext_features;
x86_cpu_def->ext2_features |= plus_ext2_features;
x86_cpu_def->ext3_features |= plus_ext3_features;
+ x86_cpu_def->kvm_features |= plus_kvm_features;
x86_cpu_def->features &= ~minus_features;
x86_cpu_def->ext_features &= ~minus_ext_features;
x86_cpu_def->ext2_features &= ~minus_ext2_features;
x86_cpu_def->ext3_features &= ~minus_ext3_features;
+ x86_cpu_def->kvm_features &= ~minus_kvm_features;
free(s);
return 0;
env->cpuid_ext_features = def->ext_features;
env->cpuid_ext2_features = def->ext2_features;
env->cpuid_xlevel = def->xlevel;
- env->cpuid_ext3_features = def->ext3_features;
+ env->cpuid_kvm_features = def->kvm_features;
{
const char *model_id = def->model_id;
int c, len, i;
#include "gdbstub.h"
#include "host-utils.h"
+#ifdef CONFIG_KVM_PARA
+#include <linux/kvm_para.h>
+#endif
+//
//#define DEBUG_KVM
#ifdef DEBUG_KVM
}
}
+#ifdef CONFIG_KVM_PARA
+struct kvm_para_features {
+ int cap;
+ int feature;
+} para_features[] = {
+#ifdef KVM_CAP_CLOCKSOURCE
+ { KVM_CAP_CLOCKSOURCE, KVM_FEATURE_CLOCKSOURCE },
+#endif
+#ifdef KVM_CAP_NOP_IO_DELAY
+ { KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY },
+#endif
+#ifdef KVM_CAP_PV_MMU
+ { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP },
+#endif
+#ifdef KVM_CAP_CR3_CACHE
+ { KVM_CAP_CR3_CACHE, KVM_FEATURE_CR3_CACHE },
+#endif
+ { -1, -1 }
+};
+
+static int get_para_features(CPUState *env)
+{
+ int i, features = 0;
+
+ for (i = 0; i < ARRAY_SIZE(para_features) - 1; i++) {
+ if (kvm_check_extension(env->kvm_state, para_features[i].cap))
+ features |= (1 << para_features[i].feature);
+ }
+
+ return features;
+}
+#endif
+
int kvm_arch_init_vcpu(CPUState *env)
{
struct {
} __attribute__((packed)) cpuid_data;
uint32_t limit, i, j, cpuid_i;
uint32_t unused;
+ struct kvm_cpuid_entry2 *c;
+#ifdef KVM_CPUID_SIGNATURE
+ uint32_t signature[3];
+#endif
env->mp_state = KVM_MP_STATE_RUNNABLE;
cpuid_i = 0;
+#ifdef CONFIG_KVM_PARA
+ /* Paravirtualization CPUIDs */
+ memcpy(signature, "KVMKVMKVM\0\0\0", 12);
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = KVM_CPUID_SIGNATURE;
+ c->eax = 0;
+ c->ebx = signature[0];
+ c->ecx = signature[1];
+ c->edx = signature[2];
+
+ c = &cpuid_data.entries[cpuid_i++];
+ memset(c, 0, sizeof(*c));
+ c->function = KVM_CPUID_FEATURES;
+ c->eax = env->cpuid_kvm_features & get_para_features(env);
+#endif
+
cpu_x86_cpuid(env, 0, 0, &limit, &unused, &unused, &unused);
for (i = 0; i <= limit; i++) {
- struct kvm_cpuid_entry2 *c = &cpuid_data.entries[cpuid_i++];
+ c = &cpuid_data.entries[cpuid_i++];
switch (i) {
case 2: {
cpu_x86_cpuid(env, 0x80000000, 0, &limit, &unused, &unused, &unused);
for (i = 0x80000000; i <= limit; i++) {
- struct kvm_cpuid_entry2 *c = &cpuid_data.entries[cpuid_i++];
+ c = &cpuid_data.entries[cpuid_i++];
c->function = i;
c->flags = 0;