Implement pcibios_default_alignment for pseries so that resources are page-aligned. The main benefit of this is being able to map any resource from userspace via mechanisms like VFIO.
This is identical to powernv's implementation. Signed-off-by: Shawn Anastasio <sh...@anastas.io> --- arch/powerpc/platforms/pseries/pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 911534b89c85..6d922c096354 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -210,6 +210,11 @@ int pseries_pcibios_sriov_disable(struct pci_dev *pdev) } #endif +static resource_size_t pseries_pcibios_default_alignment(void) +{ + return PAGE_SIZE; +} + static void __init pSeries_request_regions(void) { if (!isa_io_base) @@ -231,6 +236,8 @@ void __init pSeries_final_fixup(void) eeh_show_enabled(); + ppc_md.pcibios_default_alignment = pseries_pcibios_default_alignment; + #ifdef CONFIG_PCI_IOV ppc_md.pcibios_sriov_enable = pseries_pcibios_sriov_enable; ppc_md.pcibios_sriov_disable = pseries_pcibios_sriov_disable; -- 2.28.0