if (!supported)
break;
- for (idx = 1, i = 1; idx < 64; ++idx) {
+ if (*nent >= maxnent)
+ goto out;
+
+ do_host_cpuid(&entry[1], function, 1);
+ ++*nent;
+
+ entry[1].eax &= kvm_cpuid_D_1_eax_x86_features;
+ cpuid_mask(&entry[1].eax, CPUID_D_1_EAX);
+ if (entry[1].eax & (F(XSAVES)|F(XSAVEC)))
+ entry[1].ebx = xstate_required_size(supported, true);
+ else
+ entry[1].ebx = 0;
+ /* Saving XSS controlled state via XSAVES isn't supported. */
+ entry[1].ecx = 0;
+ entry[1].edx = 0;
+
+ for (idx = 2, i = 2; idx < 64; ++idx) {
u64 mask = ((u64)1 << idx);
+
if (*nent >= maxnent)
goto out;
do_host_cpuid(&entry[i], function, idx);
- if (idx == 1) {
- entry[i].eax &= kvm_cpuid_D_1_eax_x86_features;
- cpuid_mask(&entry[i].eax, CPUID_D_1_EAX);
- entry[i].ebx = 0;
- if (entry[i].eax & (F(XSAVES)|F(XSAVEC)))
- entry[i].ebx =
- xstate_required_size(supported,
- true);
- } else {
- if (entry[i].eax == 0 || !(supported & mask))
- continue;
- if (WARN_ON_ONCE(entry[i].ecx & 1))
- continue;
- }
+ if (entry[i].eax == 0 || !(supported & mask))
+ continue;
+ if (WARN_ON_ONCE(entry[i].ecx & 1))
+ continue;
entry[i].ecx = 0;
entry[i].edx = 0;
++*nent;