Re: port-amd64/55543: PVHVM fails to attach hypervisor bus on Amazon EC2 t2.micro

To: port-amd64-maintainer%netbsd.org@localhost,gnats-admin%netbsd.org@localhost,netbsd-bugs%netbsd.org@localhost,jmcneill%invisible.ca@localhost
Subject: Re: port-amd64/55543: PVHVM fails to attach hypervisor bus on Amazon EC2 t2.micro
From: Jared McNeill <jmcneill%invisible.ca@localhost>
Date: Wed, 9 Sep 2020 23:50:01 +0000 (UTC)
The following reply was made to PR port-amd64/55543; it has been noted by GNATS.

From: Jared McNeill <jmcneill%invisible.ca@localhost>
To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: gnats-bugs%netbsd.org@localhost, port-amd64-maintainer%netbsd.org@localhost, 
    gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: port-amd64/55543: PVHVM fails to attach hypervisor bus on Amazon
 EC2 t2.micro
Date: Wed, 9 Sep 2020 20:47:44 -0300 (ADT)

 On Wed, 9 Sep 2020, Manuel Bouyer wrote:
 
 > Good, so it should work with the stock hypervisor.c 1.88, which I
 > just commited.
 > Can you try it ?
 
 Looks good!
 
 [     1.000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
 [     1.000000]     2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
 [     1.000000]     2018, 2019, 2020 The NetBSD Foundation, Inc.  All rights reserved.
 [     1.000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
 [     1.000000]     The Regents of the University of California.  All rights reserved.
 
 [     1.000000] NetBSD 9.99.72 (GENERIC) #10: Wed Sep  9 19:09:01 ADT 2020
 [     1.000000]         jmcneill%starscream.invisible.ca@localhost:/home/jmcneill/netbsd/cvs-src/sys/arch/amd64/compile/obj/GENERIC
 [     1.000000] total memory = 1023 MB
 [     1.000000] avail memory = 966 MB
 [     1.000000] pool redzone disabled for 'buf4k'
 [     1.000000] pool redzone disabled for 'buf64k'
 [     1.000000] entropy: no seed from bootloader
 [     1.000000] timecounter: Timecounters tick every 10.000 msec
 [     1.000000] Kernelized RAIDframe activated
 [     1.000000] timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
 [     1.000003] Xen HVM domU (4.2.amazon)
 [     1.000003] mainbus0 (root)
 [     1.000003] Identified Guest XEN in HVM mode.
 [     1.000003] ACPI: RSDP 0x00000000000EA020 000024 (v02 Xen   )
 [     1.000003] ACPI: XSDT 0x00000000FC00E2A0 000054 (v01 Xen    HVM      00000000 HVML 00000000)
 [     1.000003] ACPI: FACP 0x00000000FC00DF60 0000F4 (v04 Xen    HVM      00000000 HVML 00000000)
 [     1.000003] ACPI: DSDT 0x00000000FC0021C0 00BD19 (v02 Xen    HVM      00000000 INTL 20090123)
 [     1.000003] ACPI: FACS 0x00000000FC002180 000040
 [     1.000003] ACPI: APIC 0x00000000FC00E060 0000D8 (v02 Xen    HVM      00000000 HVML 00000000)
 [     1.000003] ACPI: HPET 0x00000000FC00E1B0 000038 (v01 Xen    HVM      00000000 HVML 00000000)
 [     1.000003] ACPI: WAET 0x00000000FC00E1F0 000028 (v01 Xen    HVM      00000000 HVML 00000000)
 [     1.000003] ACPI: SSDT 0x00000000FC00E220 000031 (v02 Xen    HVM      00000000 INTL 20090123)
 [     1.000003] ACPI: SSDT 0x00000000FC00E260 000033 (v02 Xen    HVM      00000000 INTL 20090123)
 [     1.000003] ACPI: 3 ACPI AML tables successfully acquired and loaded
 [     1.000003] ioapic0 at mainbus0 apid 1: pa 0xfec00000, version 0x11, 48 pins
 [     1.000003] cpu0 at mainbus0 apid 0
 [     1.000003] cpu0: Use lfence to serialize rdtsc
 [     1.000003] cpu0: Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz, id 0x306f2
 [     1.000003] cpu0: node 0, package 0, core 0, smt 0
 [     1.000003] cpu0: autoconfiguration error: failed to set event upcall vector: -38
 [     1.000003] cpu0: autoconfiguration error: falling back to global vector
 [     1.000003] hypervisor0 at mainbus0: Xen version 4.2.amazon
 [     1.000003] hypervisor0: features:  writable_page_tables auto_translated_physmap hvm_callback_vector hvm_safe_pvclock hvm_pirqs
 [     1.000003] xenbus0 at hypervisor0: Xen Virtual Bus Interface
 [     1.000003] acpi0 at mainbus0: Intel ACPICA 20200717
 [     1.000003] acpi0: X/RSDT: OemId <   Xen,     HVM,00000000>, AslId <HVML,00000000>
 [     1.000003] acpi0: SCI interrupting at int 9
 [     1.000003] acpi0: fixed power button present
 [     1.000003] acpi0: fixed sleep button present
 [     1.000003] timecounter: Timecounter "ACPI-Safe" frequency 3579545 Hz quality 900
 [     1.002884] hpet0 at acpi0: high precision event timer (mem 0xfed00000-0xfed00400)
 [     1.002884] timecounter: Timecounter "hpet0" frequency 62500000 Hz quality 2000
 [     1.009071] MEM0 (PNP0C02) at acpi0 not configured
 [     1.009071] SYSR (PNP0C02) at acpi0 not configured
 [     1.009071] attimer1 at acpi0 (TMR, PNP0100): io 0x40-0x43 irq 0
 [     1.009071] pcppi1 at acpi0 (SPKR, PNP0800): io 0x61
 [     1.009071] spkr0 at pcppi1: PC Speaker
 [     1.009071] wsbell at spkr0 not configured
 [     1.009071] midi0 at pcppi1: PC speaker
 [     1.009071] sysbeep0 at pcppi1
 [     1.009071] pckbc1 at acpi0 (PS2M, PNP0F13) (aux port): irq 12
 [     1.009071] pckbc2 at acpi0 (PS2K, PNP0303) (kbd port): io 0x60,0x64 irq 1
 [     1.009071] FDC0 (PNP0700) at acpi0 not configured
 [     1.009071] UAR1 (PNP0501) at acpi0 not configured
 [     1.009071] HP0 (PNP0C02) at acpi0 not configured
 [     1.009071] ACPI: Enabled 2 GPEs in block 00 to 0F
 [     1.009071] attimer1: attached to pcppi1
 [     1.009071] pckbd0 at pckbc2 (kbd slot)
 [     1.009071] pckbc2: using irq 1 for kbd slot
 [     1.009071] wskbd0 at pckbd0 mux 1
 [     1.009071] pms0 at pckbc2 (aux slot)
 [     1.009071] pckbc2: using irq 12 for aux slot
 [     1.009071] wsmouse0 at pms0 mux 0
 [     1.009071] pci0 at mainbus0 bus 0: configuration mode 1
 [     1.009071] pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
 [     1.009071] pchb0 at pci0 dev 0 function 0: Intel 82441FX (PMC) PCI and Memory Controller (rev. 0x02)
 [     1.009071] pcib0 at pci0 dev 1 function 0: Intel 82371SB (PIIX3) PCI-ISA Bridge (rev. 0x00)
 [     1.009071] piixide0 at pci0 dev 1 function 1: Intel 82371SB IDE Interface (PIIX3) (rev. 0x00)
 [     1.009071] piixide0: bus-master DMA support present
 [     1.009071] piixide0: primary channel wired to compatibility mode
 [     1.009071] piixide0: primary channel interrupting at ioapic0 pin 14
 [     1.009071] atabus0 at piixide0 channel 0
 [     1.009071] piixide0: secondary channel wired to compatibility mode
 [     1.009071] piixide0: secondary channel interrupting at ioapic0 pin 15
 [     1.009071] atabus1 at piixide0 channel 1
 [     1.009071] piixpm0 at pci0 dev 1 function 3: Intel 82371AB (PIIX4) Power Management Controller (rev. 0x01)
 [     1.009071] timecounter: Timecounter "piixpm0" frequency 3579545 Hz quality 900
 [     1.009071] piixpm0: 24-bit timer
 [     1.009071] piixpm0: SMBus disabled
 [     1.009071] vga0 at pci0 dev 2 function 0: Cirrus Logic CL-GD5446 (rev. 0x00)
 [     1.009071] wsdisplay0 at vga0 kbdmux 1
 [     1.009071] wsmux1: connecting to wsdisplay0
 [     1.009071] wskbd0: connecting to wsdisplay0
 [     1.009071] drm at vga0 not configured
 [     1.009071] XenSource, Inc. Xen Platform Device (undefined, subclass 0x80, revision 0x01) at pci0 dev 3 function 0 not configured
 [     1.009071] isa0 at pcib0
 [     1.009071] com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
 [     1.009071] com0: console
 [     1.009071] fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
 [     1.009071] fdc0: can't set up ISA DMA map
 [     1.009071] acpicpu0 at cpu0: ACPI CPU
 [     1.009071] acpicpu0: C1: HLT, lat   0 us, pow     0 mW
 [     1.009071] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
 [     1.182865] xenbus0: using event channel 3
 [     1.182865] IPsec: Initialized Security Association Processing.
 [     1.182865] aes: Intel AES-NI
 [     1.182865] chacha: x86 SSE2 ChaCha
 [     1.182865] adiantum: self-test passed
 [     1.182865] aes_ccm: self-test passed
 [     1.182865] blake2s: self-test passed
 [     1.182865] xbd0 at xenbus0 id 768: Xen Virtual Block Device Interface
 [     1.191689] xbd0: using event channel 5
 [     1.191689] xennet0 at xenbus0 id 0: Xen Virtual Network Interface
 [     1.210478] xennet0: backend features 0x7<IPV6-CSUM,SG,RX-COPY>
 [     1.210478] pool redzone disabled for 'xnfrx'
 [     1.210478] xennet0: MAC address 12:12:e0:36:4f:c3
 [     1.221142] xennet0: using event channel 6
 [     1.221142] balloon at xenbus0 id 0 not configured
 [     1.221142] xbd0: 10240 MB, 512 bytes/sect x 20971520 sectors
 [     1.221142] xbd0: backend features 0
 [     1.232341] cgd: self-test aes-xts-256
 [     1.232341] cgd: self-test aes-xts-512
 [     1.232341] cgd: self-test aes-cbc-128
 [     1.232341] cgd: self-test aes-cbc-256
 [     1.232341] cgd: self-test 3des-cbc-192
 [     1.232341] cgd: self-test blowfish-cbc-448
 [     1.232341] cgd: self-test aes-cbc-128 (encblkno8)
 [     1.232341] cgd: self-tests passed
 [     1.232341] WARNING: 2 errors while detecting hardware; check system log.
 [     1.244188] boot device: xbd0
 [     1.244188] root on xbd0a dumps on xbd0b
 [     1.250396] root file system type: ffs
 [     1.250396] kern.module.path=/stand/amd64/9.99.72/modules
 [     1.250396] clock: unknown CMOS layout
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