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diff --git a/usr.sbin/bhyvectl/amd64/bhyvectl_machdep.c b/usr.sbin/bhyvectl/amd64/bhyvectl_machdep.c
--- a/usr.sbin/bhyvectl/amd64/bhyvectl_machdep.c
+++ b/usr.sbin/bhyvectl/amd64/bhyvectl_machdep.c
@@ -31,6 +31,7 @@
#include <machine/cpufunc.h>
#include <machine/specialreg.h>
+#include <machine/vmm.h>
#include <err.h>
#include <fcntl.h>
@@ -41,6 +42,7 @@
#include <string.h>
#include <time.h>
#include <unistd.h>
+#include <ctype.h>
#include <vmmapi.h>
#include "amd/vmcb.h"
@@ -93,6 +95,7 @@
static vm_paddr_t gpa_pmap;
static int inject_nmi, assert_lapic_lvt = -1;
static int get_intinfo;
+static int get_cpuid_cfg;
static int set_cr0, get_cr0, set_cr2, get_cr2, set_cr3, get_cr3;
static int set_cr4, get_cr4;
static uint64_t set_cr0_val, set_cr2_val, set_cr3_val, set_cr4_val;
@@ -278,6 +281,38 @@
printf("\n");
}
+static void
+print_cpuid_cfg(struct vm_vcpu_cpuid_config *vvcc)
+{
+ printf("CPUID configuration for vcpu %d: flags = 0x%x, nent = %d\n",
+ vvcc->vvcc_vcpuid, vvcc->vvcc_flags, vvcc->vvcc_nent);
+
+ if (vvcc->vvcc_nent == 0)
+ return;
+
+ printf("%10s,%5s %10s %10s %10s %10s %16s\n",
+ "Function", "Index", "EAX", "EBX", "ECX", "EDX", "ASCII");
+
+ for (uint32_t i = 0; i != vvcc->vvcc_nent; i++) {
+ struct vcpu_cpuid_entry *vce =
+ &((struct vcpu_cpuid_entry *)vvcc->vvcc_entries)[i];
+ char *regs = (char *)&vce->vce_eax;
+
+ printf("0x%.8x", vce->vce_function);
+ if ((vce->vce_flags & VCE_FLAG_MATCH_INDEX) != 0)
+ printf(",0x%.3x: ", vce->vce_index);
+ else
+ printf(": ");
+ printf("0x%.8x,0x%.8x,0x%.8x,0x%.8x ",
+ vce->vce_eax, vce->vce_ebx, vce->vce_ecx, vce->vce_edx);
+
+ for (int j = 0; j != 16; j++)
+ printf("%c", isprint(regs[j]) ? regs[j] : '.');
+
+ printf("\n");
+ }
+}
+
/* AMD 6th generation and Intel compatible MSRs */
#define MSR_AMD6TH_START 0xC0000000
#define MSR_AMD6TH_END 0xC0001FFF
@@ -1217,6 +1252,7 @@
{ "get-x2apic-state", NO_ARG, &get_x2apic_state, 1 },
{ "inject-nmi", NO_ARG, &inject_nmi, 1 },
{ "get-intinfo", NO_ARG, &get_intinfo, 1 },
+ { "get-cpuid-cfg", NO_ARG, &get_cpuid_cfg, 1 },
};
const struct option intel_opts[] = {
{ "get-vmcs-pinbased-ctls",
@@ -1885,4 +1921,39 @@
print_intinfo("current", info[1]);
}
}
+
+ if (!error && (get_cpuid_cfg || get_all)) {
+ struct vm_vcpu_cpuid_config vvcc = {
+ .vvcc_vcpuid = 0, /* filled in by the ioctl code */
+ .vvcc_flags = 0,
+ .vvcc_nent = 0,
+ .vvcc_entries = NULL
+ };
+ size_t entries_sz;
+
+ /*
+ * Get the flags and the number of configured CPUID entries,
+ * and allocate a buffer for the entries if necessary.
+ */
+ error = vm_get_cpuid(vcpu, &vvcc);
+ if (error == 0 && vvcc.vvcc_nent != 0) {
+ entries_sz = vvcc.vvcc_nent *
+ sizeof (struct vcpu_cpuid_entry);
+ vvcc.vvcc_entries = malloc(entries_sz);
+ }
+
+ /*
+ * If there are CPUID entries, call vm_get_cpuid() again
+ * to get them.
+ */
+ if (error == 0 && vvcc.vvcc_entries != NULL) {
+ bzero(vvcc.vvcc_entries, entries_sz);
+
+ error = vm_get_cpuid(vcpu, &vvcc);
+ }
+
+ if (error == 0) {
+ print_cpuid_cfg(&vvcc);
+ }
+ }
}

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