[Bug 279901] glibc-2.39-2 and above on the host segfault

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279901

--- Comment #37 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to Florian Weimer from comment #36)
Do you see which CPUID leaf causes the trouble?

As a guess, I wonder if the following bhyve patch helps (it tries to fix
CPUID leaf 0x8000_001D %ecx 3):

diff --git a/sys/amd64/vmm/x86.c b/sys/amd64/vmm/x86.c
index a833b61786e7..8474666b5e6f 100644
--- a/sys/amd64/vmm/x86.c
+++ b/sys/amd64/vmm/x86.c
@@ -256,7 +256,7 @@ x86_emulate_cpuid(struct vcpu *vcpu, uint64_t *rax,
uint64_t *rbx,
                                func = 3;       /* unified cache */
                                break;
                        default:
-                               logical_cpus = 0;
+                               logical_cpus = sockets * threads * cores;
                                level = 0;
                                func = 0;
                                break;

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