hv: cpuid: add cpuid_level

Get maximum input value for basic cpuid information.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

Author: lifeix

hypervisor/arch/x86/cpu.c

@@ -128,6 +128,10 @@ static void get_cpu_capabilities(void)
 	uint32_t eax, unused;
 	uint32_t family, model;
 
+	cpuid(CPUID_VENDORSTRING,
+		&boot_cpu_data.cpuid_level,
+		&unused, &unused, &unused);
+
 	cpuid(CPUID_FEATURES, &eax, &unused,
 		&boot_cpu_data.cpuid_leaves[FEAT_1_ECX],
 		&boot_cpu_data.cpuid_leaves[FEAT_1_EDX]);

hypervisor/include/arch/x86/cpu.h

@@ -244,6 +244,7 @@ struct cpuinfo_x86 {
 	uint8_t x86, x86_model;
 	uint8_t x86_virt_bits;
 	uint8_t x86_phys_bits;
+	uint32_t cpuid_level;
 	uint32_t extended_cpuid_level;
 	uint64_t physical_address_mask;
 	uint32_t cpuid_leaves[FEATURE_WORDS];