Date: Tue, 6 Aug 2013 15:33:46 -0700 From: Anish <akgupt3@gmail.com> To: mailinglists@debank.tv Cc: freebsd-virtualization@freebsd.org Subject: Re: bhyve and virtualbox on the same host using EPT Message-ID: <CALnRwMQZcsw5frCqodFeO5Zz%2BoYg32LBQo2v_Bf3kNmQwOO0-A@mail.gmail.com> In-Reply-To: <1f2844d8e1f5f5f931811be351f19bd9@debank.tv> References: <1f2844d8e1f5f5f931811be351f19bd9@debank.tv>
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Each processor has its own EPT root pointer in VMCS. How many processors are there in system and how many are given to Virtualbox. error = vmcs_set_defaults(&vmx->vmcs[i], (u_long)vmx_longjmp, (u_long)&vmx->ctx[i], vtophys(vmx->pml4ept), pinbased_ctls, procbased_ctls, procbased_ctls2, exit_ctls, entry_ctls, vtophys(vmx->msr_bitmap), vpid); On Tue, Aug 6, 2013 at 3:02 PM, <mailinglists@debank.tv> wrote: > 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 > > ______________________________**_________________ > freebsd-virtualization@**freebsd.org <freebsd-virtualization@freebsd.org>mailing list > http://lists.freebsd.org/**mailman/listinfo/freebsd-**virtualization<http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization> > To unsubscribe, send any mail to "freebsd-virtualization-** > unsubscribe@freebsd.org <freebsd-virtualization-unsubscribe@freebsd.org>" >
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