Josh Grosse <j...@jggimi.net> writes:

> On Wed, Nov 17, 2021 at 08:36:35PM -0500, Dave Voutila wrote:
>> My work adding an ipi for clearing VMCS didn't touch anything to do with
>> emulating instructions touch memory regions.
>>
>> Another thing that changed around this time, IIRC, was we bumped seabios
>> in ports.
>>
>> Can you grab an older "vmm-firmware" from the below, unpack it, and boot
>> the same vm but tell vmctl to use that bios image with -B?
>>
>> http://firmware.openbsd.org/firmware/6.9/vmm-firmware-1.11.0p3.tgz
>>
>> I would be shocked if my ipi work magically made vmm or vmd start
>> showing a floppy disk device.
>
> There was no change in outcome with firmware 1.11 (6.9) or 1.14 (-current).
> With the Aug 31 commit applied, I see this message in OpenBSD/amd64 -release 
> 7.0
> guests:
>
>     fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
>
> and the subsequent logging of:
>
>     fdcresult: overrun
>
> However, with kernels built preceeding the Aug 31 commit, these don't occur.

Interesting. Thanks for testing my suggestion. I'm in the middle of
squashing some other issue in vmm but will take a look at this next. We
do very little emulation in vmm(4) and send most of it to vmd(8), so
this is a bit surprising, but clearly something is funky.

-dv

>
> An up-to-date kernel built with VMM_DEBUG shows these messages when starting 
> a guest:
>
> vm_impl_init_vmx: created vm_map @ 0xfffffd81d3e729a0
> vm_resetcpu: resetting vm 1 vcpu 0 to power on defaults
> Guest EPTP = 0x1cd92f01e
> vmm_alloc_vpid: allocated VPID/ASID 1
> vmm_handle_cpuid: function 0x0a (arch. perf mon) not supported
> vmx_handle_cr: mov to cr0 @ 100149e, data=0x80010031
> vmx_handle_wrmsr: wrmsr exit, msr=0x8b, discarding data written from 
> guest=0x0:0x0
> vmx_handle_wrmsr: wrmsr exit, msr=0x8b, discarding data written from 
> guest=0x0:0x0
> vmm_handle_cpuid: unsupported rax=0x40000100
> vmm_handle_cpuid: invalid cpuid input leaf 0x15, guest rip=0xffffffff81c89979 
> - resetting to 0xd
> vmm_handle_cpuid: function 0x06 (thermal/power mgt) not supported
> vmm_handle_cpuid: function 0x0a (arch. perf mon) not supported
>
> My dmesg:
>
> OpenBSD 7.0-current (GENERIC.MP) #37: Mon Nov 15 23:13:17 EST 2021
>     j...@x220.jggimi.net:/sys/arch/amd64/compile/GENERIC.MP
> real mem = 8451125248 (8059MB)
> avail mem = 8179060736 (7800MB)
> random: good seed from bootblocks
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xdae9c000 (64 entries)
> bios0: vendor LENOVO version "8DET76WW (1.46 )" date 06/21/2018
> bios0: LENOVO 4291G26
> acpi0 at bios0: ACPI 4.0
> acpi0: sleep states S0 S3 S4 S5
> acpi0: tables DSDT FACP SLIC SSDT SSDT SSDT HPET APIC MCFG ECDT ASF! TCPA 
> SSDT SSDT DMAR UEFI UEFI UEFI
> acpi0: wakeup devices LID_(S3) SLPB(S3) IGBE(S4) EXP4(S4) EXP7(S4) EHC1(S3) 
> EHC2(S3) HDEF(S4)
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpihpet0 at acpi0: 14318179 Hz
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2492.23 MHz, 06-2a-07
> cpu0:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> cpu0: 256KB 64b/line 8-way L2 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
> cpu0: apic clock running at 99MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE
> cpu1 at mainbus0: apid 1 (application processor)
> cpu1: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.91 MHz, 06-2a-07
> cpu1:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> cpu1: 256KB 64b/line 8-way L2 cache
> cpu1: smt 1, core 0, package 0
> cpu2 at mainbus0: apid 2 (application processor)
> cpu2: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.92 MHz, 06-2a-07
> cpu2:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> cpu2: 256KB 64b/line 8-way L2 cache
> cpu2: smt 0, core 1, package 0
> cpu3 at mainbus0: apid 3 (application processor)
> cpu3: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.91 MHz, 06-2a-07
> cpu3:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> cpu3: 256KB 64b/line 8-way L2 cache
> cpu3: smt 1, core 1, package 0
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xf8000000, bus 0-63
> acpiec0 at acpi0
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus -1 (PEG_)
> acpiprt2 at acpi0: bus 2 (EXP1)
> acpiprt3 at acpi0: bus 3 (EXP2)
> acpiprt4 at acpi0: bus -1 (EXP4)
> acpiprt5 at acpi0: bus 13 (EXP5)
> acpiprt6 at acpi0: bus -1 (EXP7)
> acpibtn0 at acpi0: LID_
> acpibtn1 at acpi0: SLPB
> acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
> acpicmos0 at acpi0
> tpm0 at acpi0 TPM_ 1.2 (TIS) addr 0xfed40000/0x5000, device 0x0000104a rev 
> 0x4e
> acpibat0 at acpi0: BAT0 model "42T4875" serial    94 type LION oem "Panasonic"
> acpiac0 at acpi0: AC unit online
> acpithinkpad0 at acpi0: version 1.0
> "PNP0C14" at acpi0 not configured
> "PNP0C14" at acpi0 not configured
> acpicpu0 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
> acpicpu1 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
> acpicpu2 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
> acpicpu3 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
> acpipwrres0 at acpi0: PUBS, resource for EHC1, EHC2
> acpitz0 at acpi0: critical temperature is 99 degC
> acpidock0 at acpi0: GDCK not docked (0)
> acpivideo0 at acpi0: VID_
> acpivout0 at acpivideo0: LCD0
> acpivideo1 at acpi0: VID_
> cpu0: using VERW MDS workaround (except on vmm entry)
> cpu0: Enhanced SpeedStep 2492 MHz: speeds: 2501, 2500, 2200, 2000, 1800, 
> 1600, 1400, 1200, 1000, 800 MHz
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel Core 2G Host" rev 0x09
> inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 3000" rev 0x09
> drm0 at inteldrm0
> inteldrm0: msi, SANDYBRIDGE, gen 6
> "Intel 6 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
> em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address 
> f0:de:f1:78:7c:39
> ehci0 at pci0 dev 26 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 16
> usb0 at ehci0: USB revision 2.0
> uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 
> addr 1
> azalia0 at pci0 dev 27 function 0 "Intel 6 Series HD Audio" rev 0x04: msi
> azalia0: codecs: Conexant CX20590, Intel/0x2805, using Conexant CX20590
> audio0 at azalia0
> ppb0 at pci0 dev 28 function 0 "Intel 6 Series PCIE" rev 0xb4: msi
> pci1 at ppb0 bus 2
> ppb1 at pci0 dev 28 function 1 "Intel 6 Series PCIE" rev 0xb4: msi
> pci2 at ppb1 bus 3
> iwn0 at pci2 dev 0 function 0 "Intel Centrino Advanced-N 6205" rev 0x34: msi, 
> MIMO 2T2R, MoW, address 8c:70:5a:c4:39:bc
> ppb2 at pci0 dev 28 function 4 "Intel 6 Series PCIE" rev 0xb4: msi
> pci3 at ppb2 bus 13
> sdhc0 at pci3 dev 0 function 0 "Ricoh 5U822 SD/MMC" rev 0x07: apic 2 int 16
> sdhc0: SDHC 3.0, 50 MHz base clock
> sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed, dma
> ehci1 at pci0 dev 29 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 23
> usb1 at ehci1: USB revision 2.0
> uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 
> addr 1
> pcib0 at pci0 dev 31 function 0 "Intel QM67 LPC" rev 0x04
> ahci0 at pci0 dev 31 function 2 "Intel 6 Series AHCI" rev 0x04: msi, AHCI 1.3
> ahci0: port 0: 6.0Gb/s
> ahci0: port 2: 3.0Gb/s
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 0 lun 0: <ATA, SSD2SC240G1CS175, CS11> 
> naa.5f8db4c115701558
> sd0: 228936MB, 512 bytes/sector, 468862128 sectors, thin
> sd1 at scsibus1 targ 2 lun 0: <ATA, KINGSTON SUV500M, 0030> 
> naa.50026b7782967799
> sd1: 114473MB, 512 bytes/sector, 234441648 sectors, thin
> ichiic0 at pci0 dev 31 function 3 "Intel 6 Series SMBus" rev 0x04: apic 2 int 
> 18
> iic0 at ichiic0
> spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
> spdmem1 at iic0 addr 0x51: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
> isa0 at pcib0
> isadma0 at isa0
> pckbc0 at isa0 port 0x60/5 irq 1 irq 12
> pckbd0 at pckbc0 (kbd slot)
> wskbd0 at pckbd0: console keyboard
> pms0 at pckbc0 (aux slot)
> wsmouse0 at pms0 mux 0
> wsmouse1 at pms0 mux 0
> pms0: Synaptics clickpad, firmware 8.1, 0x1e2b1 0x940300 0x194b40 0xd002a3 
> 0x123800
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> aps0 at isa0 port 0x1600/31
> vmm0 at mainbus0: VMX/EPT
> efifb at mainbus0 not configured
> dt: 445 probes
> sdmmc0: can't enable card
> uhub2 at uhub0 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" 
> rev 2.00/0.00 addr 2
> uhub3 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" 
> rev 2.00/0.00 addr 2
> vscsi0 at root
> scsibus2 at vscsi0: 256 targets
> softraid0 at root
> scsibus3 at softraid0: 256 targets
> sd2 at scsibus3 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006>
> sd2: 228935MB, 512 bytes/sector, 468860513 sectors
> root on sd2a (84cf7725b144158a.a) swap on sd2b dump on sd2b
> drm:pid21029:intel_cpu_fifo_underrun_irq_handler *ERROR* [drm] *ERROR* CPU 
> pipe A FIFO underrun
> drm:pid21029:cpt_set_fifo_underrun_reporting *ERROR* [drm] *ERROR* uncleared 
> pch fifo underrun on pch transcoder A
> drm:pid21029:intel_pch_fifo_underrun_irq_handler *ERROR* [drm] *ERROR* PCH 
> transcoder A FIFO underrun
> inteldrm0: 1366x768, 32bpp
> wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
> wsdisplay0: screen 1-5 added (std, vt100 emulation)

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