@olivierlambert hi, yes i try to use the ryzen igpu on a VM to use h264 decoding.

Regards,

Hello!

Sorry for my english
I tried to passthrough my amd embedded graphics cards but I have an issue on the VM boot "Invalid PCI ROM header signature: expecting 0xaa55, got 0x4556"
Have you ever had this problem?

Only solution who I found is to dump the vBios and force the vm to use it but it's for KVM and I don't if i can applie it on XCP.

https://www.reddit.com/r/homelab/comments/11l0s5j/boxmox_asrock_4x4_box_5800u_jbod_proxmox/

My setup

Udoo bolt V8 (AMD Ryzen Embedded V1605B with Radeon Vega Gfx + 16go DDR4)
I use XCP 8.3 up to date
on dom0 I exclude 05:00.0, 05:00.1 and assigned them on my debian VM

# lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:01.6 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:01.7 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 PCIe GPP Bridge [6:0]
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus A
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Internal PCIe GPP Bridge 0 to Bus B
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Device 24: Function 7
01:00.0 Non-Volatile memory controller: Silicon Motion, Inc. SM2263EN/SM2263XT SSD Controller (rev 03)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev 83)
05:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio Controller
05:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
05:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1
05:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1
05:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor
05:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
05:00.7 Non-VGA unclassified device: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/Renoir Non-Sensor Fusion Hub KMDF driver
06:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 61)

# xe vm-param-get uuid=fbabee82-9426-650e-f10b-c392d8788ef2 param-name=other-config
pci: 0/0000:05:00.0,0/0000:05:00.1; xo:notes: bureau virtuel; xo:069b2d77: {"creation":{"date":"2024-03-23T16:58:00.859Z","template":"07d91aaa-43f7-430a-bf84-0edb6714df0f","user":"01357f62-8aab-4ea4-8c00-3544cfff24bf"}}; base_template_name: Debian Bookworm 12 (preview); import_task: OpaqueRef:a0d77144-e020-271a-f54b-b0f55f231aa0; mac_seed: 96e3d896-8aed-12e5-1b9a-d932a057b4a9; linux_template: true; install-methods: cdrom,nfs,http,ftp

# xl dmesg
 __  __            _  _    _ _____ _____
 \ \/ /___ _ __   | || |  / |___  |___ /
  \  // _ \ '_ \  | || |_ | |  / /  |_ \
  /  \  __/ | | | |__   _|| | / /_ ___) |
 /_/\_\___|_| |_|    |_|(_)_|/_/(_)____/

(XEN) [00000005a0a89ef4] Xen version 4.17.3-4 (mockbuild@[unknown]) (gcc (GCC) 11.2.1 20210728 (Red Hat 11.2.1-1)) debug=n Tue Apr 16 18:38:59 CEST 2024
(XEN) [00000005a0a8a778] Latest ChangeSet: 949a4aad4176, pq 4f8cbaa4a111
(XEN) [00000005a0a8b3f8] build-id: a8640618c1c5f907fd04bb2a8d6a1bcabff71d1d
(XEN) [00000005a0a8b984] Bootloader: GRUB 2.06
(XEN) [00000005a0a8bf74] Command line: dom0_mem=1792M,max:1792M watchdog ucode=scan dom0_max_vcpus=1-4 crashkernel=256M,below=4G console=vga vga=mode-0x0311 amd_iommu=on iommu=pt
(XEN) [00000005a0a8c8ac] Xen image load base address: 0x95a00000
(XEN) [00000005a0a8ccbc] Video information:
(XEN) [00000005a0a8d130]  No VGA detected
(XEN) [00000005a0a8d48c] Disc information:
(XEN) [00000005a0a8d98c]  Found 0 MBR signatures
(XEN) [00000005a0a8dedc]  Found 4 EDD information structures
(XEN) [00000005a0a8eeb8] CPU Vendor: AMD, Family 23 (0x17), Model 17 (0x11), Stepping 0 (raw 00810f10)
(XEN) [00000005a0a92b44] EFI RAM map:
(XEN) [00000005a0a932b0]  [0000000000000000, 000000000009ffff] (usable)
(XEN) [00000005a0a93990]  [00000000000a0000, 00000000000fffff] (reserved)
(XEN) [00000005a0a94084]  [0000000000100000, 0000000009601fff] (usable)
(XEN) [00000005a0a94764]  [0000000009602000, 00000000097fffff] (reserved)
(XEN) [00000005a0a94d90]  [0000000009800000, 000000000a1fffff] (usable)
(XEN) [00000005a0a95330]  [000000000a200000, 000000000a209fff] (ACPI NVS)
(XEN) [00000005a0a9595c]  [000000000a20a000, 000000009cc3bfff] (usable)
(XEN) [00000005a0a95f9c]  [000000009cc3c000, 000000009d71efff] (reserved)
(XEN) [00000005a0a965a0]  [000000009d71f000, 000000009d732fff] (ACPI data)
(XEN) [00000005a0a96b90]  [000000009d733000, 000000009dcc5fff] (ACPI NVS)
(XEN) [00000005a0a9716c]  [000000009dcc6000, 000000009e51cfff] (reserved)
(XEN) [00000005a0a9775c]  [000000009e51d000, 000000009effffff] (usable)
(XEN) [00000005a0a97d10]  [000000009f000000, 00000000dfffffff] (reserved)
(XEN) [00000005a0a982d8]  [00000000f8000000, 00000000fbffffff] (reserved)
(XEN) [00000005a0a98878]  [00000000fd100000, 00000000fdffffff] (reserved)
(XEN) [00000005a0a98e2c]  [00000000feb80000, 00000000fec01fff] (reserved)
(XEN) [00000005a0a993cc]  [00000000fec10000, 00000000fec10fff] (reserved)
(XEN) [00000005a0a99958]  [00000000fed00000, 00000000fed00fff] (reserved)
(XEN) [00000005a0a99ee4]  [00000000fed40000, 00000000fed44fff] (reserved)
(XEN) [00000005a0a9a484]  [00000000fed80000, 00000000fed8ffff] (reserved)
(XEN) [00000005a0a9a9fc]  [00000000fedc2000, 00000000fedcffff] (reserved)
(XEN) [00000005a0a9af88]  [00000000fedd4000, 00000000fedd5fff] (reserved)
(XEN) [00000005a0a9b500]  [00000000fee00000, 00000000feefffff] (reserved)
(XEN) [00000005a0a9ba8c]  [00000000ff000000, 00000000ffffffff] (reserved)
(XEN) [00000005a0a9c07c]  [0000000100000000, 000000041f33ffff] (usable)
(XEN) [00000005a0a9c6a8]  [000000041f340000, 000000041fffffff] (reserved)
(XEN) [00000005a1fea078] Kdump: 256MB (262144kB) at 0x85c00000
(XEN) [00000005a20058dc] ACPI: RSDP 9D840000, 0024 (r2 ALASKA)
(XEN) [00000005a2007290] ACPI: XSDT 9D840098, 00AC (r1 ALASKA   A M I   1072009 AMI     10013)
(XEN) [00000005a200876c] ACPI: FACP 9D848910, 0114 (r6 ALASKA   A M I   1072009 AMI     10013)
(XEN) [00000005a2009edc] ACPI: DSDT 9D8401D8, 8738 (r2 ALASKA   A M I   1072009 INTL 20120913)
(XEN) [00000005a200af1c] ACPI: FACS 9DC80F00, 0040
(XEN) [00000005a200b764] ACPI: APIC 9D848A28, 00DE (r3 ALASKA   A M I   1072009 AMI     10013)
(XEN) [00000005a200c2a4] ACPI: FPDT 9D848B08, 0044 (r1 ALASKA   A M I   1072009 AMI     10013)
(XEN) [00000005a200cd1c] ACPI: FIDT 9D848B50, 009C (r1 ALASKA    A M I  1072009 AMI     10013)
(XEN) [00000005a200d76c] ACPI: SSDT 9D848BF0, 5419 (r2    AMD AmdTable        2 MSFT  2000002)
(XEN) [00000005a200e400] ACPI: CRAT 9D84E010, 0810 (r1    AMD AMD CRAT        1 AMD         1)
(XEN) [00000005a200efa4] ACPI: CDIT 9D84E820, 0029 (r1    AMD AMD CDIT        1 AMD         1)
(XEN) [00000005a200f990] ACPI: MCFG 9D84E850, 003C (r1 ALASKA    A M I  1072009 MSFT    10013)
(XEN) [00000005a2010354] ACPI: HPET 9D84E890, 0038 (r1 ALASKA    A M I  1072009 AMI         5)
(XEN) [00000005a2010d04] ACPI: UEFI 9D84E8C8, 0048 (r1                        0             0)
(XEN) [00000005a2011808] ACPI: VFCT 9D84E910, D484 (r1 ALASKA   A M I         1  AMD 31504F47)
(XEN) [00000005a20123e8] ACPI: TPM2 9D85BD98, 0034 (r4 ALASKA   A M I         1 AMI         0)
(XEN) [00000005a2012d70] ACPI: IVRS 9D85BDD0, 00D0 (r2  AMD   AMD IVRS        1 AMD         0)
(XEN) [00000005a2013734] ACPI: SSDT 9D85BEA0, 0C33 (r1    AMD AmdTable        1 INTL 20120913)
(XEN) [00000005a2014224] ACPI: SSDT 9D85CAD8, 1B4E (r1    AMD AmdTable        1 INTL 20120913)
(XEN) [00000005a2014d00] ACPI: SSDT 9D85E628, 119C (r1    AMD  AMD CPU        1 AMD         1)
(XEN) [00000005a20157f0] ACPI: WSMT 9D85F7C8, 0028 (r1 ALASKA   A M I   1072009 AMI     10013)
(XEN) [00000005a2048c04] System RAM: 15303MB (15671260kB)
(XEN) [00000005a37c2f10] No NUMA configuration found
(XEN) [00000005a37c3974] Faking a node at 0000000000000000-000000041f340000
(XEN) [00000005a626c414] Domain heap initialised
(XEN) [00000005a6d29230] SMBIOS 3.1 present.
(XEN) [00000005a6d2e190] XSM Framework v1.0.1 initialized
(XEN) [00000005a6d2e834] Initialising XSM SILO mode
(XEN) [00000005a6d6d8a4] Using APIC driver default
(XEN) [00000005a6d80274] ACPI: PM-Timer IO Port: 0x808 (32 bits)
(XEN) [00000005a6d815ac] ACPI: v5 SLEEP INFO: control[0:0], status[0:0]
(XEN) [00000005a6d8353c] ACPI: SLEEP INFO: pm1x_cnt[1:804,1:0], pm1x_evt[1:800,1:0]
(XEN) [00000005a6d83ec4] ACPI: 32/64X FACS address mismatch in FADT - 9dc80f00/0000000000000000, using 32
(XEN) [00000005a6d85148] ACPI:             wakeup_vec[9dc80f0c], vec_size[20]
(XEN) [00000005a6e03430] ACPI: IOAPIC (id[0x09] address[0xfec00000] gsi_base[0])
(XEN) [00000005a6e09678] IOAPIC[0]: apic_id 9, version 33, address 0xfec00000, GSI 0-23
(XEN) [00000005a6e0a4ec] ACPI: IOAPIC (id[0x0a] address[0xfec01000] gsi_base[24])
(XEN) [00000005a6e0ce04] IOAPIC[1]: apic_id 10, version 33, address 0xfec01000, GSI 24-55
(XEN) [00000005a6e1efdc] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
(XEN) [00000005a6e20508] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
(XEN) [00000005a6e36b00] ACPI: HPET id: 0x10228201 base: 0xfed00000
(XEN) [00000005a6e40d30] PCI: MCFG configuration 0: base f8000000 segment 0000 buses 00 - 3f
(XEN) [00000005a6e41668] PCI: MCFG area at f8000000 reserved in E820
(XEN) [00000005a6e434cc] PCI: Using MCFG for segment 0000 bus 00-3f
(XEN) [00000005a6e449bc] Using ACPI (MADT) for SMP configuration information
(XEN) [00000005a6e451a0] SMP: Allowing 16 CPUs (8 hotplug CPUs)
(XEN) [00000005a6e51234] IRQ limits: 56 GSI, 1608 MSI/MSI-X
(XEN) [00000005a6e846d4] CPU0: 1600 ... 2000 MHz
(XEN) [00000005a6e855ac] xstate: size: 0x340 and states: 0x7
(XEN) [00000005a6e93c10] CPU0: AMD Fam17h machine check reporting enabled
(XEN) [00000005a6e97bf8] Speculative mitigation facilities:
(XEN) [00000005a6e984b8]   Hardware hints:
(XEN) [00000005a6e98bc0]   Hardware features: IBPB
(XEN) [00000005a6e99048]   Compiled-in support: INDIRECT_THUNK HARDEN_ARRAY HARDEN_BRANCH HARDEN_GUEST_ACCESS HARDEN_LOCK
(XEN) [00000005a6e99d2c]   Xen settings: BTI-Thunk: RETPOLINE, SPEC_CTRL: No, Other: IBPB-ctxt DIV BRANCH_HARDEN
(XEN) [00000005a6e9a4ac]   Support for HVM VMs: MSR_VIRT_SPEC_CTRL RSB IBPB-entry
(XEN) [00000005a6e9aa10]   Support for PV VMs: None
(XEN) [00000005a6e9b190]   XPTI (64-bit PV only): Dom0 disabled, DomU disabled (without PCID)
(XEN) [00000005a6e9b730]   PV L1TF shadowing: Dom0 disabled, DomU disabled
(XEN) [00000005a6e9c900] Using scheduler: SMP Credit Scheduler (credit)
(XEN) [00000005ace06e04] Platform timer is 14.318MHz HPET
(XEN) [    0.102737] Detected 1996.241 MHz processor.
(XEN) [    0.106272] EFI memory map:
(XEN) [    0.106273]  0000000000000-0000000007fff type=3 attr=000000000000000f
(XEN) [    0.106274]  0000000008000-000000000bfff type=2 attr=000000000000000f
(XEN) [    0.106274]  000000000c000-000000002ffff type=7 attr=000000000000000f
(XEN) [    0.106275]  0000000030000-000000003ffff type=2 attr=000000000000000f
(XEN) [    0.106276]  0000000040000-000000009ffff type=3 attr=000000000000000f
(XEN) [    0.106277]  0000000100000-0000000794fff type=2 attr=000000000000000f
(XEN) [    0.106278]  0000000795000-0000000ffffff type=7 attr=000000000000000f
(XEN) [    0.106278]  0000001000000-000000101ffff type=4 attr=000000000000000f
(XEN) [    0.106279]  0000001020000-0000002315fff type=2 attr=000000000000000f
(XEN) [    0.106280]  0000002316000-0000009601fff type=7 attr=000000000000000f
(XEN) [    0.106280]  0000009602000-00000097fffff type=0 attr=000000000000000f
(XEN) [    0.106281]  0000009800000-000000a1fffff type=7 attr=000000000000000f
(XEN) [    0.106282]  000000a200000-000000a209fff type=10 attr=000000000000000f
(XEN) [    0.106283] Setting RUNTIME attribute for 000000a200000-000000a209fff
(XEN) [    0.106284]  000000a20a000-0000070f28fff type=7 attr=000000000000000f
(XEN) [    0.106285]  0000070f29000-0000096958fff type=1 attr=000000000000000f
(XEN) [    0.106286]  0000096959000-0000096959fff type=2 attr=000000000000000f
(XEN) [    0.106287]  000009695a000-000009695ffff type=7 attr=000000000000000f
(XEN) [    0.106287]  0000096960000-0000096a73fff type=1 attr=000000000000000f
(XEN) [    0.106288]  0000096a74000-000009c514fff type=4 attr=000000000000000f
(XEN) [    0.106289]  000009c515000-000009c682fff type=7 attr=000000000000000f
(XEN) [    0.106289]  000009c683000-000009cc3bfff type=3 attr=000000000000000f
(XEN) [    0.106290]  000009cc3c000-000009d71efff type=0 attr=000000000000000f
(XEN) [    0.106291]  000009d71f000-000009d732fff type=9 attr=000000000000000f
(XEN) [    0.106292]  000009d733000-000009dcc5fff type=10 attr=000000000000000f
(XEN) [    0.106292] Setting RUNTIME attribute for 000009d733000-000009dcc5fff
(XEN) [    0.106306]  000009dcc6000-000009e47efff type=6 attr=800000000000000f
(XEN) [    0.106320]  000009e47f000-000009e51cfff type=5 attr=800000000000000f
(XEN) [    0.106325]  000009e51d000-000009e69ffff type=4 attr=000000000000000f
(XEN) [    0.106326]  000009e6a0000-000009e6bdfff type=3 attr=000000000000000f
(XEN) [    0.106326]  000009e6be000-000009e6ecfff type=4 attr=000000000000000f
(XEN) [    0.106327]  000009e6ed000-000009e703fff type=3 attr=000000000000000f
(XEN) [    0.106328]  000009e704000-000009ef81fff type=4 attr=000000000000000f
(XEN) [    0.106328]  000009ef82000-000009ef88fff type=3 attr=000000000000000f
(XEN) [    0.106329]  000009ef89000-000009efadfff type=4 attr=000000000000000f
(XEN) [    0.106330]  000009efae000-000009efbdfff type=3 attr=000000000000000f
(XEN) [    0.106330]  000009efbe000-000009efdefff type=4 attr=000000000000000f
(XEN) [    0.106331]  000009efdf000-000009eff0fff type=3 attr=000000000000000f
(XEN) [    0.106332]  000009eff1000-000009eff8fff type=4 attr=000000000000000f
(XEN) [    0.106333]  000009eff9000-000009effffff type=3 attr=000000000000000f
(XEN) [    0.106333]  0000100000000-000041f33ffff type=7 attr=000000000000000f
(XEN) [    0.106334]  00000000a0000-00000000fffff type=0 attr=000000000000000f
(XEN) [    0.106335]  000009f000000-00000dfffffff type=0 attr=000000000000000f
(XEN) [    0.106336]  00000f8000000-00000fbffffff type=11 attr=800000000000100d
(XEN) [    0.106338]  00000fd100000-00000fdffffff type=11 attr=800000000000100d
(XEN) [    0.106346]  00000feb80000-00000fec01fff type=11 attr=800000000000100d
(XEN) [    0.106352]  00000fec10000-00000fec10fff type=11 attr=800000000000100d
(XEN) [    0.106353]  00000fed00000-00000fed00fff type=11 attr=800000000000100d
(XEN) [    0.106354]  00000fed40000-00000fed44fff type=11 attr=800000000000100d
(XEN) [    0.106355]  00000fed80000-00000fed8ffff type=11 attr=800000000000100d
(XEN) [    0.106357]  00000fedc2000-00000fedcffff type=11 attr=800000000000100d
(XEN) [    0.106358]  00000fedd4000-00000fedd5fff type=11 attr=800000000000100d
(XEN) [    0.106359]  00000fee00000-00000feefffff type=11 attr=800000000000100d
(XEN) [    0.106368]  00000ff000000-00000ffffffff type=11 attr=800000000000100d
(XEN) [    0.106369]  000041f340000-000041fffffff type=0 attr=000000000000000f
(XEN) [    0.106375] alt table ffff82d0406a55b8 -> ffff82d0406b4b98
(XEN) [    0.133541] AMD-Vi: IOMMU Extended Features:
(XEN) [    0.133542] - Peripheral Page Service Request
(XEN) [    0.133543] - NX bit
(XEN) [    0.133543] - Invalidate All Command
(XEN) [    0.133544] - Guest APIC
(XEN) [    0.133544] - Performance Counters
(XEN) [    0.133545] - Host Address Translation Size: 0x2
(XEN) [    0.133545] - Guest Address Translation Size: 0
(XEN) [    0.133546] - Guest CR3 Root Table Level: 0x1
(XEN) [    0.133546] - Maximum PASID: 0xf
(XEN) [    0.133547] - SMI Filter Register: 0x1
(XEN) [    0.133547] - SMI Filter Register Count: 0x2
(XEN) [    0.133548] - Guest Virtual APIC Modes: 0x1
(XEN) [    0.133548] - Dual PPR Log: 0x2
(XEN) [    0.133549] - Dual Event Log: 0x2
(XEN) [    0.133549] - User / Supervisor Page Protection
(XEN) [    0.133550] - Device Table Segmentation: 0x3
(XEN) [    0.133550] - PPR Log Overflow Early Warning
(XEN) [    0.133551] - PPR Automatic Response
(XEN) [    0.133551] - Memory Access Routing and Control: 0x1
(XEN) [    0.133552] - Block StopMark Message
(XEN) [    0.133552] - Performance Optimization
(XEN) [    0.133553] - MSI Capability MMIO Access
(XEN) [    0.133553] - Guest I/O Protection
(XEN) [    0.133554] - Host Access
(XEN) [    0.133554] - Enhanced PPR Handling
(XEN) [    0.133555] - Attribute Forward
(XEN) [    0.133555] - Invalidate IOTLB Type
(XEN) [    0.133555] - VM Table Size: 0
(XEN) [    0.145481] AMD-Vi: IOMMU 0 Enabled.
(XEN) [    0.145888] I/O virtualisation enabled
(XEN) [    0.145889]  - Dom0 mode: Relaxed
(XEN) [    0.145912] Interrupt remapping enabled
(XEN) [    0.145916] Enabling APIC mode.  Using 2 I/O APICs
(XEN) [    0.147708] ENABLING IO-APIC IRQs
(XEN) [    0.147709]  -> Using new ACK method
(XEN) [    0.148068] ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
(XEN) [    1.289249] Allocated console ring of 64 KiB.
(XEN) [    1.289258] HVM: ASIDs enabled.
(XEN) [    1.289259] SVM: Supported advanced features:
(XEN) [    1.289260]  - Nested Page Tables (NPT)
(XEN) [    1.289260]  - Last Branch Record (LBR) Virtualisation
(XEN) [    1.289261]  - Next-RIP Saved on #VMEXIT
(XEN) [    1.289261]  - VMCB Clean Bits
(XEN) [    1.289262]  - DecodeAssists
(XEN) [    1.289262]  - Virtual VMLOAD/VMSAVE
(XEN) [    1.289263]  - Virtual GIF
(XEN) [    1.289263]  - Pause-Intercept Filter
(XEN) [    1.289264]  - Pause-Intercept Filter Threshold
(XEN) [    1.289264]  - TSC Rate MSR
(XEN) [    1.289265] HVM: SVM enabled
(XEN) [    1.289266] HVM: Hardware Assisted Paging (HAP) detected
(XEN) [    1.289266] HVM: HAP page sizes: 4kB, 2MB, 1GB
(XEN) [    1.289272] alt table ffff82d0406a55b8 -> ffff82d0406b4b98
(XEN) [    1.432716] Brought up 8 CPUs
(XEN) [    1.432719] Testing NMI watchdog on all CPUs: ok
(XEN) [    1.453675] Scheduling granularity: cpu, 1 CPU per sched-resource
(XEN) [    1.453718] mcheck_poll: Machine check polling timer started.
(XEN) [    1.473781] NX (Execute Disable) protection active
(XEN) [    1.473788] Dom0 has maximum 888 PIRQs
(XEN) [    1.473834] csched_alloc_domdata: setting dom 0 as the privileged domain
(XEN) [    1.473861] *** Building a PV Dom0 ***
(XEN) [    1.670428]  Xen  kernel: 64-bit, lsb
(XEN) [    1.670431]  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x302c000
(XEN) [    1.670805] PHYSICAL MEMORY ARRANGEMENT:
(XEN) [    1.670805]  Dom0 alloc.:   000000040c000000->0000000410000000 (437514 pages to be allocated)
(XEN) [    1.670807]  Init. ramdisk: 000000041df0a000->000000041f1ff8bd
(XEN) [    1.670808] VIRTUAL MEMORY ARRANGEMENT:
(XEN) [    1.670810]  Loaded kernel: ffffffff81000000->ffffffff8302c000
(XEN) [    1.670811]  Phys-Mach map: 0000008000000000->0000008000380000
(XEN) [    1.670812]  Start info:    ffffffff8302c000->ffffffff8302c4b8
(XEN) [    1.670813]  Page tables:   ffffffff8302d000->ffffffff8304a000
(XEN) [    1.670814]  Boot stack:    ffffffff8304a000->ffffffff8304b000
(XEN) [    1.670815]  TOTAL:         ffffffff80000000->ffffffff83400000
(XEN) [    1.670816]  ENTRY ADDRESS: ffffffff8242b180
(XEN) [    1.671602] Dom0 has maximum 4 VCPUs
(XEN) [    1.693177] Initial low memory virq threshold set at 0x4000 pages.
(XEN) [    1.693179] Scrubbing Free RAM in background
(XEN) [    1.693182] Std. Loglevel: Errors, warnings and info
(XEN) [    1.693183] Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) [    1.693185] ***************************************************
(XEN) [    1.693187] Booted on leaky-DIV hardware with SMT/Hyperthreading
(XEN) [    1.693188] enabled.  Please assess your configuration and choose an
(XEN) [    1.693189] explicit 'smt=<bool>' setting.  See XSA-439.
(XEN) [    1.693189] ***************************************************
(XEN) [    1.693192] 3... 2... 1...
(XEN) [    4.694389] *** Serial input to DOM0 (type 'CTRL-a' three times to switch input)
(XEN) [    4.695172] Freed 2048kB init memory

######################################

on the VM:

debian 12 up to date + installation firmware-amd-graphics,

# lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.2 USB controller: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] (rev 01)
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Device 1234:1111 (rev 02)
00:03.0 Unassigned class [ff80]: XenSource, Inc. Xen Platform Device (rev 01)
00:08.0 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio Controller
00:09.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev 83)

# dmesg | grep amdg
[    5.118117] [drm] amdgpu kernel modesetting enabled.
[    5.118231] amdgpu: CRAT table not found
[    5.118235] amdgpu: Virtual CRAT table created for CPU
[    5.118251] amdgpu: Topology: Add CPU node
[    5.119622] amdgpu 0000:00:09.0: firmware: direct-loading firmware amdgpu/raven_gpu_info.bin
[    5.135617] amdgpu 0000:00:09.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x4556
[    5.151532] amdgpu 0000:00:09.0: amdgpu: Unable to locate a BIOS ROM
[    5.151560] amdgpu 0000:00:09.0: amdgpu: Fatal error during GPU init
[    5.153646] amdgpu 0000:00:09.0: amdgpu: amdgpu: finishing device.
[    5.154884] amdgpu: probe of 0000:00:09.0 failed with error -22

Regards,

Guillaume