On Tue, Nov 24, 2015 at 5:49 PM, Bjorn Helgaas <[email protected]> wrote: > On Mon, Nov 16, 2015 at 12:27:37PM +0800, Jiang Liu wrote: >> From: Liu Jiang <[email protected]> >> >> Commit 4d6b4e69a245 ("x86/PCI/ACPI: Use common interface to support >> PCI host bridge") converted x86 to use the common interface >> acpi_pci_root_create, but the conversion missed on code piece in >> arch/x86/pci/bus_numa.c, which causes regression on some legacy >> AMD platforms as reported by Arthur Marsh <[email protected]>. >> The root causes is that acpi_pci_root_create() fails to insert >> host bridge resources into iomem_resource/ioport_resource because >> x86_pci_root_bus_resources() has already inserted those resources. >> So change x86_pci_root_bus_resources() to not insert resources into >> iomem_resource/ioport_resource. > > Fixes: 4d6b4e69a245 ("x86/PCI/ACPI: Use common interface to support PCI host > bridge") > >> Signed-off-by: Jiang Liu <[email protected]> >> Reported-and-tested-by: Arthur Marsh <[email protected]> > > What's the status of this? It looks like a regression we need to fix > for v4.4. > > AFAICT, Arthur did *not* test this patch (rather, his response says he > did test it and the test failed). > > 4d6b4e69a245 was merged by Rafael, and I assume he'll merge the fix > unless I hear otherwise.
Quite frankly, I'm more likely to revert the offending commit at this point as that's not the only regression reported against it and the fix only helps in one case (out of three known to me). Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
