Date: Wed, 07 Aug 2013 10:02:54 +1200 From: mailinglists@debank.tv To: freebsd-virtualization@freebsd.org Subject: bhyve and virtualbox on the same host using EPT Message-ID: <1f2844d8e1f5f5f931811be351f19bd9@debank.tv>
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All, I'm trying to run a bhyve VM on a host that's already running Virtualbox, the problem I encounter is bhyve doesn't detect EPT capabilities but the Virtualbox logs indicate EPT is in use and functional. My question is; is it possible for two pieces of virtualization software to use EPT on the same host? See below for the various logs, happy to provide more info if needed. Bhyve generates the following error after the bootloader screen: ----------------------------------------------------- Booting... 4 vCPUs requested but only 1 available ----------------------------------------------------- A quick look in the source code indicates that this error means bhyve can't use EPT and falls back to using 1 CPU, now the machine in question does have EPT capabilites (it lists POPCNT in dmesg): ----------------------------------------------------- uname -a FreeBSD becks.debank.tv 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r253788M: Tue Jul 30 12:02:57 NZST 2013 root@becks.debank.tv:/usr/obj/usr/src/sys/GENERIC amd64 ----------------------------------------------------- ----------------------------------------------------- from dmesg CPU: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz (2664.82-MHz K8-class CPU) Origin = "GenuineIntel" Id = 0x106a5 Family = 0x6 Model = 0x1a Stepping = 5 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x98e3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT> AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM> AMD Features2=0x1<LAHF> TSC: P-state invariant, performance statistics real memory = 25769803776 (24576 MB) avail memory = 24060841984 (22946 MB) ----------------------------------------------------- ----------------------------------------------------- root@becks:~/bhyve # kldstat Id Refs Address Size Name 1 27 0xffffffff80200000 150e0d0 kernel 2 1 0xffffffff8170f000 224a98 zfs.ko 3 2 0xffffffff81934000 5c30 opensolaris.ko 4 1 0xffffffff8193a000 2d40 coretemp.ko 5 3 0xffffffff8193d000 51a68 vboxdrv.ko 6 2 0xffffffff81a12000 28c0 vboxnetflt.ko 7 2 0xffffffff81a15000 881d netgraph.ko 8 1 0xffffffff81a1e000 15ff ng_ether.ko 9 1 0xffffffff81a20000 3ec0 vboxnetadp.ko 10 1 0xffffffff81aba000 1037 cpuctl.ko 11 1 0xffffffff81abc000 1686ac vmm.ko ----------------------------------------------------- The Virtualbox logs below show EPT in use: ----------------------------------------------------- 00:00:00.419806 HWACCM: MSR_IA32_VMX_PROCBASED_CTLS2 = 7f00000000 00:00:00.419807 HWACCM: VMX_VMCS_CTRL_PROC_EXEC2_VIRT_APIC 00:00:00.419807 HWACCM: VMX_VMCS_CTRL_PROC_EXEC2_EPT 00:00:00.419808 HWACCM: VMX_VMCS_CTRL_PROC_EXEC2_DESCRIPTOR_INSTR_EXIT 00:00:00.419808 HWACCM: VMX_VMCS_CTRL_PROC_EXEC2_RDTSCP 00:00:00.419809 HWACCM: VMX_VMCS_CTRL_PROC_EXEC2_X2APIC 00:00:00.419809 HWACCM: VMX_VMCS_CTRL_PROC_EXEC2_VPID 00:00:00.419810 HWACCM: VMX_VMCS_CTRL_PROC_EXEC2_WBINVD_EXIT ---- snip ------ 00:00:00.419916 HWACCM: 32-bit and 64-bit guests supported. 00:00:00.419917 HWACCM: VMX enabled! 00:00:00.419918 HWACCM: Enabled nested paging 00:00:00.419919 HWACCM: EPT root page = 00000000b6167000 00:00:00.419922 HWACCM: Large page support enabled! ----------------------------------------------------- Thanks, Rob Evers
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