Date: Sun, 7 May 2023 11:12:20 -0600 From: Rebecca Cran <rebecca@bsdio.com> To: virtualization@FreeBSD.org Cc: =?UTF-8?Q?Corvin_K=c3=b6hne?= <corvink@FreeBSD.org> Subject: Bhyve: SMBIOS area too small for 65+ vCPUs Message-ID: <e4215350-2a1e-6b29-f2cd-3b3af15e4d00@bsdio.com>
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I have a machine with enough cores that I'm able to run large VMs with up to 128 or more vCPUs. However, it looks like bhyve's SMBIOS area is too small once we reach 65 vCPUs since I get the following assert failure on boot: bcran@maxamd:~/bhyve % sudo ./runbhyve.sh fbuf frame buffer base: 0xde214e00000 [sz 16777216] Assertion failed: (curaddr - startaddr < SMBIOS_MAX_LENGTH), function smbios_build, file /usr/src/usr.sbin/bhyve/smbiostbl.c, line 936. Abort trap From looking through the code it appears we can't simply make it larger because the ACPI tables after after it. -- Rebecca Cran
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