Re: Xen 4.18.5_20250521nb0 not ELF binary (Was: Re: EFI and Xen)

To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Subject: Re: Xen 4.18.5_20250521nb0 not ELF binary (Was: Re: EFI and Xen)
From: Chuck Zmudzinski <frchuckz%gmail.com@localhost>
Date: Sat, 24 May 2025 08:16:42 -0400
On 5/24/2025 8:08 AM, Chuck Zmudzinski wrote:
> On 5/24/2025 7:38 AM, Manuel Bouyer wrote:
>> On Sat, May 24, 2025 at 07:00:55AM -0400, Chuck Zmudzinski wrote:
>>> On 5/24/2025 3:40 AM, Manuel Bouyer wrote:
>>> > On Fri, May 23, 2025 at 10:06:05PM -0400, Chuck Zmudzinski wrote:
>>> >> On 5/23/2025 5:18 PM, Chuck Zmudzinski wrote:
>>> >> > On 5/23/2025 4:22 PM, Manuel Bouyer wrote:
>>> >> >> On Fri, May 23, 2025 at 04:19:46PM -0400, Chuck Zmudzinski wrote:
>>> >> >>> On 5/23/2025 4:15 PM, Manuel Bouyer wrote:
>>> >> >>> > On Fri, May 23, 2025 at 04:13:01PM -0400, Chuck Zmudzinski wrote:
>>> >> >>> >> [...]
>>> >> >>> >> I needed to acquire a PCI serial card to get some useful messages because the motherboard does not have a built-in serial port.
>>> >> >>> >> 
>>> >> >>> >> It appears Xen 4.18.4_20241221nb0 from pkgsrc crashes on my box before the NetBSD dom0 starts:
>>> >> >>> >> 
>>> >> >>> >> -------- snip ------
>>> >> >>> >> (XEN) Xen call trace:
>>> >> >>> >> (XEN)    [<ffff82d040261a00>] R intel_iommu_enable_eim+0/0xe0
>>> >> >>> >> (XEN)    [<ffff82d040268ac4>] S iommu_enable_x2apic+0x24/0x70
>>> >> >>> >> (XEN)    [<ffff82d0403f579d>] S x2apic_bsp_setup+0x12d/0x220
>>> >> >>> >> (XEN)    [<ffff82d0403ff0e4>] S __start_xen+0x1af4/0x2620
>>> >> >>> >> (XEN)    [<ffff82d040204434>] S __high_start+0x94/0xa0
>>> >> >>> >> (XEN) 
>>> >> >>> >> (XEN) 
>>> >> >>> >> (XEN) ****************************************
>>> >> >>> >> (XEN) Panic on CPU 0:
>>> >> >>> >> (XEN) CONTROL-FLOW PROTECTION FAULT: #CP[0003] endbranch
>>> >> >>> >> (XEN) ****************************************
>>> >> >>> >> (XEN) 
>>> >> >>> >> (XEN) Reboot in five seconds...
>>> >> >>> >> (XEN) Resetting with ACPI MEMORY or I/O RESET_REG.
>>> >> >>> >> -------- end messages ------
>>> >> >>> > 
>>> >> >>> > Do you have a way to disable x2apic in the BIOS ?
>>> >> >>> 
>>> >> >>> I can check later this evening but I have an appointment now.
>>> >> >>> 
>>> >> >>> > 
>>> >> >>> >> 
>>> >> >>> >> Please note only the pkgsrc version of Xen crashes. I can boot Xen with no problems using Xen packaged by Fedora, AlmaLinux, etc. on this box.
>>> >> >>> > 
>>> >> >>> > Is it the same Xen version ?
>>> >> >>> 
>>> >> >>> More or less - I know Xen 4.18.4 worked, now Fedora is at Xen 4.19.
>>> >> >> 
>>> >> >> strange; maybe they had a patch.
>>> >> >> Note that I just updated xen in pkgsrc to 4.18.5
>>> >> >> 
>>> >> > 
>>> >> > Actually, I do remember that Xen 4.19.1 from Fedora did not work on my box but a patch that was added in 4.19.2 fixed it. I see the patch I needed on the Xen 4.19 branch was not added in Xen 4.18.4 but it is added in Xen 4.18.5, so maybe it will be fixed in Xen 4.18.5. I will try it when I can download Xen 4.18.5.
>>> >> > 
>>> >> > Thanks.
>>> >> 
>>> >> I rebuilt the latest Xen from pkgsrc but no help. Then I searched
>>> >> Google for information about the error I am getting which has to
>>> >> do with Control-flow Enforcement Technology (cet) and tried experimenting
>>> >> with the Xen cet= options.
>>> >> 
>>> >> Now I am not getting the crash, but just when it is ready to build the
>>> >> PV Dom0, it complains that it does not have an ELF binary.
>>> >> 
>>> >> Note the magic incantation to get past the crash is to add the option
>>> >> cet=no-ibt to the Xen command line.
>>> >> 
>>> >> With this configuration, I get:
>>> >> 
>>> >> (XEN) Xen version 4.18.5_20250521nb0 (chuckz@) (gcc (nb3 20231008) 10.5.0) debug=n Fri May 23 18:59:50 EDT 2025
>>> >> (XEN) Latest ChangeSet: 
>>> >> (XEN) build-id: 86afac8b52e2d124001208bb6261d17088a2f26f
>>> >> (XEN) Bootloader: NetBSD/x86 EFI Boot (x64), Revision 1.2 (Mon Dec 16 13:08:11 UTC 2024) (from NetBSD 10.1)
>>> >> (XEN) Command line: dom0_mem=2G com2=9600,8n1,0x40c0,16,1:0.0 console=com2 cet=no-ibt pv-l1tf=false
>>> >> ... snip many messages
>>> >> (XEN)  First cpu on runqueue, activating
>>> >> (XEN) Adding cpu 17 to runqueue 2
>>> >> (XEN) Adding cpu 18 to runqueue 2
>>> >> (XEN) Adding cpu 19 to runqueue 2
>>> >> (XEN) mcheck_poll: Machine check polling timer started.
>>> >> (XEN) NX (Execute Disable) protection active
>>> >> (XEN) d0 has maximum 4160 PIRQs
>>> >> (XEN) *** Building a PV Dom0 ***
>>> >> (XEN) ELF: not an ELF binary
>>> >> (XEN) 
>>> >> (XEN) ****************************************
>>> >> (XEN) Panic on CPU 0:
>>> >> (XEN) Could not construct domain 0
>>> >> (XEN) ****************************************
>>> >> (XEN) 
>>> >> (XEN) Reboot in five seconds...
>>> >> (XEN) Resetting with ACPI MEMORY or I/O RESET_REG.
>>> >> 
>>> >> I tried uncompressing (with gunzip) the netbsd-XEN3_DOM0.gz file, and I
>>> >> tried omitting the dom0_mem setting, but neither change helped.
>>> > 
>>> > This one I don't know; what boot loader command are you using ?
>>> > 
>>> 
>>> menu=Boot normally with Xen:dev hd2d:;rndseed /var/db/entropy-file;load /netbsd-XEN3_DOM0 console=pc;multiboot /xen.gz dom0_mem=2G com2=9600,8n1,0x40c0,16,1:0.0 console=com2 cet=no-ibt pv-l1tf=false
>> 
>> I don't have the rndseed entry in my settings; maybe that's the problem
>> 
>> BTW, as you're using a serial console you probably want
>> console=com0
>> for NetBSD
>> 
> 
> This is better without rndseed and with console=com0 for dom0 (or no console setting for dom0), now it starts to boot but it hangs:
> 
> snip ...
> (XEN) d0 has maximum 4160 PIRQs
> (XEN) *** Building a PV Dom0 ***
> (XEN)  Xen  kernel: 64-bit, lsb
> (XEN)  Dom0 kernel: 64-bit, lsb, paddr 0xffffffff80200000 -> 0xffffffff8121c000
> (XEN)  Dom0 symbol map 0xffffffff8121c000 -> 0xffffffff813b5218
> (XEN) PHYSICAL MEMORY ARRANGEMENT:
> (XEN)  Dom0 alloc.:   0000000876000000->0000000878000000 (516096 pages to be allocated)
> (XEN) VIRTUAL MEMORY ARRANGEMENT:
> (XEN)  Loaded kernel: ffffffff80200000->ffffffff813b5218
> (XEN)  Phys-Mach map: ffffffff813b6000->ffffffff817b6000
> (XEN)  Start info:    ffffffff817b6000->ffffffff817b64b8
> (XEN)  Page tables:   ffffffff817b7000->ffffffff817c8000
> (XEN)  Boot stack:    ffffffff817c8000->ffffffff817c9000
> (XEN)  TOTAL:         ffffffff80000000->ffffffff81c00000
> (XEN)  ENTRY ADDRESS: ffffffff80234000
> (XEN) Dom0 has maximum 20 VCPUs
> (XEN) Initial low memory virq threshold set at 0x4000 pages.
> (XEN) Scrubbing Free RAM in background
> (XEN) Std. Loglevel: Errors, warnings and info
> (XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
> (XEN) *** Serial input to DOM0 (type 'CTRL-a' three times to switch input)
> (XEN) Freed 668kB init memory
> [   1.0000000] cpu_rng: rdrand/rdseed
> 
> [   1.0000000] entropy: ready
> 
> [   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
> 
> [   1.0000000]     2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
> 
> [   1.0000000]     2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
> 
> [   1.0000000]     2024
> 
> [   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
> 
> [   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
> 
> [   1.0000000]     The Regents of the University of California.  All rights reserved.
> 
> 
> 
> [   1.0000000] NetBSD 10.1 (XEN3_DOM0) #0: Mon Dec 16 13:08:11 UTC 2024
> 
> [   1.0000000] 	mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/xen/compile/XEN3_DOM0
> 
> [   1.0000000] total memory = 2048 MB
> 
> [   1.0000000] avail memory = 1957 MB
> 
> [   1.0000000] mainbus0 (root)
> 
> [   1.0000000] ACPI: RSDP 0x0000000064C2C014 000024 (v02 ALASKA)
> 
> [   1.0000000] ACPI: XSDT 0x0000000064C2B728 0000EC (v01 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: FACP 0x0000000064BA1000 000114 (v06 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: DSDT 0x0000000064B18000 088B1F (v02 ALASKA A M I    00000001 INTL 20200717)
> 
> [   1.0000000] ACPI: FACS 0x0000000064CCF000 000040
> 
> [   1.0000000] ACPI: FIDT 0x0000000064B17000 00009C (v01 ALASKA A M I    00000001 AMI  00010013)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064BA3000 00038C (v02 PmaxDv Pmax_Dev 00000001 INTL 20200717)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064B11000 005D34 (v02 CpuRef CpuSsdt  00003000 INTL 20200717)
> 
> [   1.0000000] ACPI: AAFT 0x0000000064BA2000 000306 (v01 ALASKA OEMAAFT  00000001 MSFT 00000097)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064B0E000 002A81 (v02 SaSsdt SaSsdt   00003000 INTL 20200717)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064B0A000 00334F (v02 INTEL  IgfxSsdt 00003000 INTL 20200717)
> 
> [   1.0000000] ACPI: HPET 0x0000000064B09000 000038 (v01 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: APIC 0x0000000064B08000 0001DC (v05 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: MCFG 0x0000000064B07000 00003C (v01 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: NHLT 0x0000000064B06000 00002D (v00 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: LPIT 0x0000000064B05000 0000CC (v01 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064AFA000 0092F4 (v02 ALASKA TbtTypeC 00000000 INTL 20200717)
> 
> [   1.0000000] ACPI: DBGP 0x0000000064AF9000 000034 (v01 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: DBG2 0x0000000064AF8000 000054 (v00 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064AF6000 00190A (v02 ALASKA UsbCTabl 00001000 INTL 20200717)
> 
> [   1.0000000] ACPI: RMAD 0x0000000064AF5000 000088 (v01 INTEL  EDK2     00000002      01000013)
> 
> [   1.0000000] ACPI: FPDT 0x0000000064AF4000 000044 (v01 ALASKA A M I    01072009 AMI  01000013)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064AF2000 001480 (v02 INTEL  xh_rps14 00000000 INTL 20200717)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064AEE000 003AEA (v02 SocGpe SocGpe   00003000 INTL 20200717)
> 
> [   1.0000000] ACPI: SSDT 0x0000000064AEA000 0039DA (v02 SocCmn SocCmn   00003000 INTL 20200717)
> 
> [   1.0000000] ACPI: TPM2 0x0000000064AE8000 00004C (v04 ALASKA A M I    00000001 AMI  00000000)
> 
> [   1.0000000] Firmware Warning (ACPI): Incorrect checksum in table [BGRT] - 0x6E, should be 0xFFFFFFEA (20221020/utcksum-100)
> 
> [   1.0000000] ACPI: BGRT 0x0000000064AE9000 000038 (v01 ALASKA A M I    00000001 AMI  00010013)
> 
> [   1.0000000] ACPI: PHAT 0x0000000064AE7000 00083C (v01 ALASKA A M I    00000005 MSFT 0100000D)
> 
> [   1.0000000] ACPI: WSMT 0x0000000064B04000 000028 (v01 ALASKA A M I    00000001 AMI  00010013)
> 
> [   1.0000000] ACPI: 10 ACPI AML tables successfully acquired and loaded
> 
> [   1.0000000] ioapic0 at mainbus0 apid 2
> 
> (XEN) allocated vector b8 for irq 17
> (XEN) allocated vector c0 for irq 18
> (XEN) allocated vector c8 for irq 19
> (XEN) allocated vector d0 for irq 20
> (XEN) allocated vector d8 for irq 21
> (XEN) allocated vector e0 for irq 22
> (XEN) allocated vector e8 for irq 23
> (XEN) allocated vector 31 for irq 24
> (XEN) allocated vector 39 for irq 25
> (XEN) allocated vector 41 for irq 26
> (XEN) allocated vector 49 for irq 27
> (XEN) allocated vector 51 for irq 28
> (XEN) allocated vector 59 for irq 29
> (XEN) allocated vector 61 for irq 30
> (XEN) allocated vector 69 for irq 31
> (XEN) allocated vector 71 for irq 32
> (XEN) allocated vector 79 for irq 33
> (XEN) allocated vector 81 for irq 34
> (XEN) allocated vector 89 for irq 35
> (XEN) allocated vector 91 for irq 36
> (XEN) allocated vector 99 for irq 37
> (XEN) allocated vector a1 for irq 38
> (XEN) allocated vector a9 for irq 39
> (XEN) allocated vector b1 for irq 40
> (XEN) allocated vector b9 for irq 41
> (XEN) allocated vector c1 for irq 42
> (XEN) allocated vector c9 for irq 43
> (XEN) allocated vector d1 for irq 44
> (XEN) allocated vector d9 for irq 45
> (XEN) allocated vector e1 for irq 46
> (XEN) allocated vector e9 for irq 47
> (XEN) allocated vector 32 for irq 48
> (XEN) allocated vector 3a for irq 49
> (XEN) allocated vector 42 for irq 50
> (XEN) allocated vector 4a for irq 51
> (XEN) allocated vector 52 for irq 52
> (XEN) allocated vector 5a for irq 53
> (XEN) allocated vector 62 for irq 54
> (XEN) allocated vector 6a for irq 55
> (XEN) allocated vector 72 for irq 56
> (XEN) allocated vector 7a for irq 57
> (XEN) allocated vector 82 for irq 58
> (XEN) allocated vector 8a for irq 59
> (XEN) allocated vector 92 for irq 60
> (XEN) allocated vector 9a for irq 61
> (XEN) allocated vector a2 for irq 62
> (XEN) allocated vector aa for irq 63
> (XEN) allocated vector b2 for irq 64
> (XEN) allocated vector ba for irq 65
> (XEN) allocated vector c2 for irq 66
> (XEN) allocated vector ca for irq 67
> (XEN) allocated vector d2 for irq 68
> (XEN) allocated vector da for irq 69
> (XEN) allocated vector e2 for irq 70
> (XEN) allocated vector ea for irq 71
> (XEN) allocated vector 33 for irq 72
> (XEN) allocated vector 3b for irq 73
> (XEN) allocated vector 43 for irq 74
> (XEN) allocated vector 4b for irq 75
> (XEN) allocated vector 53 for irq 76
> (XEN) allocated vector 5b for irq 77
> (XEN) allocated vector 63 for irq 78
> (XEN) allocated vector 6b for irq 79
> (XEN) allocated vector 73 for irq 80
> (XEN) allocated vector 7b for irq 81
> (XEN) allocated vector 83 for irq 82
> (XEN) allocated vector 8b for irq 83
> (XEN) allocated vector 93 for irq 84
> (XEN) allocated vector 9b for irq 85
> (XEN) allocated vector a3 for irq 86
> (XEN) allocated vector ab for irq 87
> (XEN) allocated vector b3 for irq 88
> (XEN) allocated vector bb for irq 89
> (XEN) allocated vector c3 for irq 90
> (XEN) allocated vector cb for irq 91
> (XEN) allocated vector d3 for irq 92
> (XEN) allocated vector db for irq 93
> (XEN) allocated vector e3 for irq 94
> (XEN) allocated vector eb for irq 95
> (XEN) allocated vector 34 for irq 96
> (XEN) allocated vector 3c for irq 97
> (XEN) allocated vector 44 for irq 98
> (XEN) allocated vector 4c for irq 99
> (XEN) allocated vector 54 for irq 100
> (XEN) allocated vector 5c for irq 101
> (XEN) allocated vector 64 for irq 102
> (XEN) allocated vector 6c for irq 103
> (XEN) allocated vector 74 for irq 104
> (XEN) allocated vector 7c for irq 105
> (XEN) allocated vector 84 for irq 106
> (XEN) allocated vector 8c for irq 107
> (XEN) allocated vector 94 for irq 108
> (XEN) allocated vector 9c for irq 109
> (XEN) allocated vector a4 for irq 110
> (XEN) allocated vector ac for irq 111
> (XEN) allocated vector b4 for irq 112
> (XEN) allocated vector bc for irq 113
> (XEN) allocated vector c4 for irq 114
> (XEN) allocated vector cc for irq 115
> (XEN) allocated vector d4 for irq 116
> (XEN) allocated vector dc for irq 117
> (XEN) allocated vector e4 for irq 118
> (XEN) allocated vector ec for irq 119
> [   1.0000000] cpu0 at mainbus0 apid 0
> 
> [   1.0000000] cpu1 at mainbus0 apid 1
> 
> [   1.0000000] cpu2 at mainbus0 apid 8
> 
> [   1.0000000] cpu3 at mainbus0 apid 9
> 
> [   1.0000000] cpu4 at mainbus0 apid 16
> 
> [   1.0000000] cpu5 at mainbus0 apid 17
> 
> [   1.0000000] cpu6 at mainbus0 apid 24
> 
> [   1.0000000] cpu7 at mainbus0 apid 25
> 
> [   1.0000000] cpu8 at mainbus0 apid 32
> 
> [   1.0000000] cpu9 at mainbus0 apid 33
> 
> [   1.0000000] cpu10 at mainbus0 apid 40
> 
> [   1.0000000] cpu11 at mainbus0 apid 41
> 
> [   1.0000000] cpu12 at mainbus0 apid 48
> 
> [   1.0000000] cpu13 at mainbus0 apid 50
> 
> [   1.0000000] cpu14 at mainbus0 apid 52
> 
> [   1.0000000] cpu15 at mainbus0 apid 54
> 
> [   1.0000000] cpu16 at mainbus0 apid 56
> 
> [   1.0000000] cpu17 at mainbus0 apid 58
> 
> [   1.0000000] cpu18 at mainbus0 apid 60
> 
> [   1.0000000] cpu19 at mainbus0 apid 62
> 
> [   1.0000000] hypervisor0 at mainbus0: Xen version 4.18.5_20250521nb0
> 
> [   1.0000000] vcpu0 at hypervisor0
> 
> [   1.0000000] vcpu0: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu0: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu1 at hypervisor0
> 
> [   1.0000000] vcpu1: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu1: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu2 at hypervisor0
> 
> [   1.0000000] vcpu2: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu2: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu3 at hypervisor0
> 
> [   1.0000000] vcpu3: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu3: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu4 at hypervisor0
> 
> [   1.0000000] vcpu4: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu4: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu5 at hypervisor0
> 
> [   1.0000000] vcpu5: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu5: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu6 at hypervisor0
> 
> [   1.0000000] vcpu6: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu6: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu7 at hypervisor0
> 
> [   1.0000000] vcpu7: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu7: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu8 at hypervisor0
> 
> [   1.0000000] vcpu8: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu8: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu9 at hypervisor0
> 
> [   1.0000000] vcpu9: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu9: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu10 at hypervisor0
> 
> [   1.0000000] vcpu10: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu10: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu11 at hypervisor0
> 
> [   1.0000000] vcpu11: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu11: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu12 at hypervisor0
> 
> [   1.0000000] vcpu12: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu12: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu13 at hypervisor0
> 
> [   1.0000000] vcpu13: Intel(R) Core(TM) i5-14500, id 0xb06f2
> 
> [   1.0000000] vcpu13: node 0, package 0, core 0, smt 0
> 
> [   1.0000000] vcpu14 at hypervisor0
> 
> [   1.0000000] vcpu14: Intel(R) Core(TM) i
> 
> N.B. My cpu has 14 cores and 20 threads because there are 6 cores that have hyperthreading - so it hangs where the hyperthreading starts. Last thing to try is with smt=false...


Adding smt=false to the Xen command line gets me a little farther but it still hangs:

snip ...

[   1.0000000] vcpu13 at hypervisor0

[   1.0000000] vcpu13: Intel(R) Core(TM) i5-14500, id 0xb06f2

[   1.0000000] vcpu13: node 0, package 0, core 0, smt 0

[   1.0000000] xenbus0 at hypervisor0: Xen Virtual Bus Interface

[   1.0000000] xencons0 at hypervisor0: Xen Virtual Console Driver

[   1.0000000] acpi0 at hypervisor0: Intel ACPICA 20221020

[   1.0000000] ACPI: Dynamic OEM Table Load:

[   1.0000000] ACPI: SSDT 0xFFFFAE80049B3808 000394 (v02 PmRef  Cpu0Cst  00003001 INTL 20200717)

[   1.0000000] ACPI: Dynamic OEM Table Load:

[   1.0000000] ACPI: SSDT 0xFFFFAE80049B900

Then it hangs...
Follow-Ups:
- Re: Xen 4.18.5_20250521nb0 not ELF binary (Was: Re: EFI and Xen)
  - From: Manuel Bouyer
References:
- Re: EFI and Xen
  - From: Manuel Bouyer
- Re: EFI and Xen
  - From: Chuck Zmudzinski
- Xen 4.18.4_20241221nb0 panic (Was: Re: EFI and Xen)
  - From: Chuck Zmudzinski
- Re: Xen 4.18.4_20241221nb0 panic (Was: Re: EFI and Xen)
  - From: Manuel Bouyer
- Re: Xen 4.18.4_20241221nb0 panic (Was: Re: EFI and Xen)
  - From: Chuck Zmudzinski
- Re: Xen 4.18.4_20241221nb0 panic (Was: Re: EFI and Xen)
  - From: Manuel Bouyer
- Re: Xen 4.18.4_20241221nb0 panic (Was: Re: EFI and Xen)
  - From: Chuck Zmudzinski
- Re: Xen 4.18.5_20250521nb0 not ELF binary (Was: Re: EFI and Xen)
  - From: Chuck Zmudzinski
- Re: Xen 4.18.5_20250521nb0 not ELF binary (Was: Re: EFI and Xen)
  - From: Manuel Bouyer
- Re: Xen 4.18.5_20250521nb0 not ELF binary (Was: Re: EFI and Xen)
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