2  * x86 KVM CPU type initialization
7  * See the COPYING file in the top-level directory.
12 #include "host-cpu.h"
18 #include "accel/accel-cpu-target.h"
25     eax = kvm_arch_get_supported_cpuid(cs->kvm_state, 0x80000008, 0, R_EAX);  in kvm_set_guest_phys_bits()
30     cpu->guest_phys_bits = guest_phys_bits;  in kvm_set_guest_phys_bits()
31     if (cpu->guest_phys_bits > cpu->phys_bits) {  in kvm_set_guest_phys_bits()
32         cpu->guest_phys_bits = cpu->phys_bits;  in kvm_set_guest_phys_bits()
35     if (cpu->host_phys_bits && cpu->host_phys_bits_limit &&  in kvm_set_guest_phys_bits()
36         cpu->guest_phys_bits > cpu->host_phys_bits_limit) {  in kvm_set_guest_phys_bits()
37         cpu->guest_phys_bits = cpu->host_phys_bits_limit;  in kvm_set_guest_phys_bits()
44     CPUX86State *env = &cpu->env;  in kvm_cpu_realizefn()
50      * cpu->ucode_rev and cpu->phys_bits, and updates the CPUID results in  in kvm_cpu_realizefn()
64      *   cpu_common_realizefn() (via xcc->parent_realize)  in kvm_cpu_realizefn()
66     if (cpu->max_features) {  in kvm_cpu_realizefn()
69                 env->features[FEAT_7_0_ECX] |= CPUID_7_0_ECX_WAITPKG;  in kvm_cpu_realizefn()
72             if (env->features[FEAT_1_ECX] & CPUID_EXT_MONITOR) {  in kvm_cpu_realizefn()
73                 host_cpuid(5, 0, &cpu->mwait.eax, &cpu->mwait.ebx,  in kvm_cpu_realizefn()
74                            &cpu->mwait.ecx, &cpu->mwait.edx);  in kvm_cpu_realizefn()
77         if (cpu->ucode_rev == 0) {  in kvm_cpu_realizefn()
78             cpu->ucode_rev =  in kvm_cpu_realizefn()
88     if ((env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) &&  in kvm_cpu_realizefn()
89         cpu->guest_phys_bits == -1) {  in kvm_cpu_realizefn()
108     CPUX86State *env = &cpu->env;  in kvm_cpu_max_instance_init()
117     env->cpuid_min_level =  in kvm_cpu_max_instance_init()
119     env->cpuid_min_xlevel =  in kvm_cpu_max_instance_init()
121     env->cpuid_min_xlevel2 =  in kvm_cpu_max_instance_init()
143         if (!esa->size) {  in kvm_cpu_xsave_init()
148             assert(esa->size == eax);  in kvm_cpu_xsave_init()
149             esa->offset = ebx;  in kvm_cpu_xsave_init()
150             esa->ecx = ecx;  in kvm_cpu_xsave_init()
156  * KVM-specific features that are automatically added/removed
157  * from cpudef models when KVM is enabled.
162  *       by the KVM accelerator (see "OS requirements" section at
163  *       docs/system/target-i386.rst)
167     { "kvm-nopiodelay", "on" },
168     { "kvm-asyncpf", "on" },
169     { "kvm-steal-time", "on" },
170     { "kvm-pv-eoi", "on" },
171     { "kvmclock-stable-bit", "on" },
173     { "kvm-msi-ext-dest-id", "off" },
186     for (pv = kvm_default_props; pv->prop; pv++) {  in x86_cpu_change_kvm_default()
187         if (!strcmp(pv->prop, prop)) {  in x86_cpu_change_kvm_default()
188             pv->value = value;  in x86_cpu_change_kvm_default()
197     assert(pv->prop);  in x86_cpu_change_kvm_default()
207     if (xcc->model) {  in kvm_cpu_instance_init()
212             x86_cpu_change_kvm_default("kvm-msi-ext-dest-id", "on");  in kvm_cpu_instance_init()
219     if (cpu->max_features) {  in kvm_cpu_instance_init()
230     acc->cpu_target_realize = kvm_cpu_realizefn;  in kvm_cpu_accel_class_init()
231     acc->cpu_instance_init = kvm_cpu_instance_init;  in kvm_cpu_accel_class_init()
234     .name = ACCEL_CPU_NAME("kvm"),