Date: Mon, 31 Mar 2014 11:25:06 -0700 From: Peter Grehan <grehan@freebsd.org> To: bRa B <branzo@itaserv.net> Cc: freebsd-virtualization@freebsd.org Subject: Re: Bhyve on a Core i7-920 Message-ID: <5339B302.6000905@freebsd.org> In-Reply-To: <1396289325336661500@itaserv.net> References: <1396289325336661500@itaserv.net>
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Hi Brando, > Howdy folks, i have encountered a strange issue when i was trying to > run CentOS 6.5 with bhyve on a server with 11.0-CURRENT FreeBSD > Installed: > > VM unrestricted guest capability required Error in initializing VM > > the machine has 48GB of ram, and the cpu is a i7 920 as stated in the > subject of this email. It has the instructions required to run bhyve > ( VMX and POPCNT, as they appear in the dmesg log and in the Intel's > Ark: > http://ark.intel.com/products/37147/Intel-Core-i7-920-Processor-8M-Cache-2_66-GHz-4_80-GTs-Intel-QPI?q=core%20i7-920 > ). > > Is there something wrong with this CPU? The 920 aka 'Bloomfield' is a first-generation Nehalem: http://en.wikipedia.org/wiki/Intel_Core#Core_i7 That particular model doesn't have support for 16-bit real mode/32-bit protected/unpaged mode (aka "flat"). This is required for MP support for FreeBSD, or Linux support, since grub starts Linux in 32-bit flat mode. The VT-x feature that enables supports for this is known as 'unrestricted guest', and was introduced in the Westmere microarch. It *may* be possible to get Linux working with grub-bhyve by adding support to start it directly in 64-bit mode, but it would be UP only. later, Peter.
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