On Mon, Jul 30, 2018 at 11:25 AM, Paul Menzel <pmenzel+amd-gfx at molgen.mpg.de> wrote: > Dear Oded, > > > On 07/30/18 15:53, Oded Gabbay wrote: >> Do you have IOMMUv2 enabled on this chipset? > > No, I did not. With `AMD_IOMMU_V2` selected, the device is found. > > ``` > $ grep AMD_IOMMU /boot/config-4.18.0-rc3-01368-gb5aa3f4aef72 > CONFIG_AMD_IOMMU=y > CONFIG_AMD_IOMMU_V2=m > $ sudo dmesg | grep -i kfd > [sudo] password for paul: > [ 20.767499] calling kfd_module_init+0x0/0x1000 [amdkfd] @ 365 > [ 20.770567] kfd kfd: Initialized module > [ 20.771195] initcall kfd_module_init+0x0/0x1000 [amdkfd] returned 0 after 3598 usecs > [ 20.893432] Modules linked in: amdkfd amd_iommu_v2 snd_hda_codec_realtek crct10dif_pclmul crc32_pclmul snd_hda_codec_hdmi snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel amdgpu(+) i2c_piix4 r8169 k10temp snd_hda_codec snd_hda_core mii snd_hwdep snd_pcm snd_timer snd chash soundcore gpu_sched wmi video crc32c_intel xhci_pci xhci_hcd > [ 20.948465] kfd kfd: Allocated 3969056 bytes on gart > [ 20.948663] kfd kfd: added device 1002:15dd > ``` > >> If not, amdkfd won't include raven support. > > Hmm, then the warning is very confusing. Also, shouldnâ??t the build > system ensure that the dependencies are selected? It's only required for APUs. If you use a dGPU in a intel system for example, you may not want the AMD IOMMU driver. Alex
