Date: Mon, 08 May 2023 09:02:11 +0200 From: Corvin =?ISO-8859-1?Q?K=F6hne?= <corvink@FreeBSD.org> To: Rebecca Cran <rebecca@bsdio.com>, virtualization@FreeBSD.org Subject: Re: Bhyve: SMBIOS area too small for 65+ vCPUs Message-ID: <825bd0e2b446c6eb93f3194399037b5e164ae3cc.camel@FreeBSD.org> In-Reply-To: <e4215350-2a1e-6b29-f2cd-3b3af15e4d00@bsdio.com> References: <e4215350-2a1e-6b29-f2cd-3b3af15e4d00@bsdio.com>
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--=-A62HmCN2dr0LbRgsR7+z Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sun, 2023-05-07 at 11:12 -0600, Rebecca Cran wrote: > I have a machine with enough cores that I'm able to run large VMs > with=20 > up to 128 or more vCPUs. >=20 > However, it looks like bhyve's SMBIOS area is too small once we reach > 65=20 > vCPUs since I get the following assert failure on boot: >=20 >=20 > 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 >=20 >=20 > =C2=A0From looking through the code it appears we can't simply make it > larger=20 > because the ACPI tables after after it. >=20 >=20 Hi Rebecca, I've already ported qemu's fwcfg interface and qemu's acpi table loader to bhyve. It shouldn't be hard to do the same for smbios. Do you know how qemu passes his smbios tables to the guest? Is it just a binary blob or does it requires some patch instruction like acpi? --=20 Kind regards, Corvin --=-A62HmCN2dr0LbRgsR7+z Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEgvRSla3m2t/H2U9G2FTaVjFeAmoFAmRYnnMACgkQ2FTaVjFe Amq0ahAApL4g4lKhmtfnfbuXqIl4rhhtQvnLdORuN5ei+dLg2ET3P9VDiDOAuTEs pqa3ozF1vAs9OgwGyGw9IRaZK24HZSlnA/maRWsN38yOmNH82esPZEaWMbZMN4c2 829kVwlsyC7NqdNnvS9fMsVtVfevIMRaKvNoumqwHK9XZacb2FQ++OnuBvCPpgpz YPrqOnx58pBcfjLFvzUG+n5Y7H9h9igOB/wPAVRCoAcCpKVBVZuyvo4KNLtAYff3 kSr8LDh7rVn8df84+TskloRyBVOBAKuHNu5PCS1k/izsGRhun8/MAjNTsX8fjv6K aTBRb2wqt9j4EYLmdLEoofNYo5RAVcqk7j6GkshoccHoxjtJ/kWzQtAlJOVgJx/W qXFuK6dsv6UYT9P6o+L0B5l897BvUwcI+Uiqj1GTiZLAnyplJ77W7Vm+tok3LpVt AefW1iEEhwSJoLERAjMfV0bHMWw66029qZFYXOC7dmSA042+Purnn+A62pWtyAN/ aRiF+73ze5yJlnUTNVnnBPwatcd8CcRTICcHqP4QbqBiYfEFaOKN2RUSsyFPI1Xw kmhPZ0T4LHV7d94z7IlkRHs7DsPOhQYWWl8qNZ9zxTvAoP2xDwl6iZy+1uAAkhjC fg7PTDxGRYFXgR6AvkyxwMblb8LwjJIYahV9XBAMXUoieenQbys= =r78M -----END PGP SIGNATURE----- --=-A62HmCN2dr0LbRgsR7+z--
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