[PATCH] powerpc/pseries: Add pcibios_default_alignment implementation
From: Shawn Anastasio <hidden>
Date: 2020-08-21 21:00:06
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <redacted> --- 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;
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2.28.0