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| author | Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> | 2013-12-09 17:41:01 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-12-10 01:28:38 +0100 |
| commit | 08607afba64cc7a14d22b8aa2837d00f1d877d83 (patch) | |
| tree | c56b0d782a094c9d18a014a268b5f10a3cbba1d8 /arch/powerpc | |
| parent | powerpc/52xx: Re-enable bestcomm driver in defconfigs (diff) | |
| download | linux-08607afba64cc7a14d22b8aa2837d00f1d877d83.tar.xz linux-08607afba64cc7a14d22b8aa2837d00f1d877d83.zip | |
powernv: Fix VFIO support with PHB3
I have recently found out that no iommu_groups could be found under
/sys/ on a P8. That prevents PCI passthrough from working.
During my investigation, I found out there seems to be a missing
iommu_register_group for PHB3. The following patch seems to fix the
problem. After applying it, I see iommu_groups under
/sys/kernel/iommu_groups/, and can also bind vfio-pci to an adapter,
which gives me a device at /dev/vfio/.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 084cdfa40682..2c6d173842b2 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -720,6 +720,7 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, tbl->it_type = TCE_PCI_SWINV_CREATE | TCE_PCI_SWINV_FREE; } iommu_init_table(tbl, phb->hose->node); + iommu_register_group(tbl, pci_domain_nr(pe->pbus), pe->pe_number); if (pe->pdev) set_iommu_table_base(&pe->pdev->dev, tbl); |