On Tue, Feb 03, 2026 at 12:40:30PM +0100, Johannes Stezenbach wrote:
> On Tue, Feb 03, 2026 at 11:08:49AM +0530, Vasant Hegde wrote:
> > Can you try below patch?
> 
> Sadly it doesn't work, same error on hibernate.

In case it helps, I booted with amd_iommu_dump=1 and got this:

[    0.108593] [    T0] AMD-Vi: Using IVHD type 0x11
[    0.108594] [    T0] AMD-Vi: device: 0000:00:00.2 cap: 0040 flags: 30 info 0000
[    0.108596] [    T0] AMD-Vi:        mmio-addr: 00000000f7500000
[    0.108600] [    T0] AMD-Vi: PCI segment : 0x0, last bdf : 0xffff
[    0.108623] [    T0] AMD-Vi:   DEV_SELECT_RANGE_START        devid: 0000:00:00.3 flags: 0x0
[    0.108625] [    T0] AMD-Vi:   DEV_RANGE_END         devid: 0000:ff:1f.6
[    0.108706] [    T0] AMD-Vi:   DEV_ALIAS_RANGE               devid: 0000:ff:00.0 flags: 0x0 devid_to: 0000:00:14.5
[    0.108708] [    T0] AMD-Vi:   DEV_RANGE_END         devid: 0000:ff:1f.7
[    0.108710] [    T0] AMD-Vi:   DEV_SPECIAL(HPET[0])          devid: 0000:00:14.0, flags: 0x0
[    0.108712] [    T0] AMD-Vi:   DEV_SPECIAL(IOAPIC[32])               devid: 0000:00:14.0, flags: 0xd7
[    0.108715] [    T0] AMD-Vi:   DEV_SPECIAL(IOAPIC[33])               devid: 0000:00:00.1, flags: 0x0
[    0.108717] [    T0] AMD-Vi: Using global IVHD EFR:0x246577efa2254afa, EFR2:0x0
...
[    2.617032] [    T1] AMD-Vi: Extended features (0x246577efa2254afa, 0x0): PPR NX GT [5] IA GA PC GA_vAPIC
[    2.617045] [    T1] AMD-Vi: Interrupt remapping enabled
[    2.640571] [    T1] AMD-Vi: Virtual APIC enabled

I'm also attaching the ACPI IVRS table.

Side note: I wanted to check AMD documents at https://docs.amd.com/
but the "Create Account" button doesn't work. :-(
(And why do they require an account anyway, Intel and ARM don't...)


Best Regards,
Johannes