Buildresult: powerpc-next/x86_64-defconfig/x86_64-gcc8 built on Nov 19 2019, 23:29

kisskb

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Status:	OK
Date/Time:	Nov 19 2019, 23:29
Duration:	0:02:29.478373
Builder:	blade46
Revision:	powerpc/powernv: Disable native PCIe port management (`cfe255e01d0d6bf2a23d46613c3d4cfe4505dd02)`
Target:	powerpc-next/x86_64-defconfig/x86_64-gcc8
Branch:	powerpc-next
Compiler:	x86_64-gcc8 (x86_64-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify cfe255e01d0d6bf2a23d46613c3d4cfe4505dd02^{commit} cfe255e01d0d6bf2a23d46613c3d4cfe4505dd02 already have revision, skipping fetch # git checkout -q -f -B kisskb cfe255e01d0d6bf2a23d46613c3d4cfe4505dd02 # git clean -qxdf # < git log -1 # commit cfe255e01d0d6bf2a23d46613c3d4cfe4505dd02 # Author: Oliver O'Halloran <oohall@gmail.com> # Date: Mon Nov 18 17:55:53 2019 +1100 # # powerpc/powernv: Disable native PCIe port management # # On PowerNV the PCIe topology is (currently) managed by the powernv platform # code in Linux in cooperation with the platform firmware. Linux's native # PCIe port service drivers operate independently of both and this can cause # problems. # # The main issue is that the portbus driver will conflict with the platform # specific hotplug driver (pnv_php) over ownership of the MSI used to notify # the host when a hotplug event occurs. The portbus driver claims this MSI on # behalf of the individual port services because the same interrupt is used # for hotplug events, PMEs (on root ports), and link bandwidth change # notifications. The portbus driver will always claim the interrupt even if # the individual port service drivers, such as pciehp, are compiled out. # # The second, bigger, problem is that the hotplug port service driver # fundamentally does not work on PowerNV. The platform assumes that all # PCI devices have a corresponding arch-specific handle derived from the DT # node for the device (pci_dn) and without one the platform will not allow # a PCI device to be enabled. This problem is largely due to historical # baggage, but it can't be resolved without significant re-factoring of the # platform PCI support. # # We can fix these problems in the interim by setting the # "pcie_ports_disabled" flag during platform initialisation. The flag # indicates the platform owns the PCIe ports which stops the portbus driver # from being registered. # # This does have the side effect of disabling all port services drivers # that is: AER, PME, BW notifications, hotplug, and DPC. However, this is # not a huge disadvantage on PowerNV since these services are either unused # or handled through other means. # # Fixes: 66725152fb9f ("PCI/hotplug: PowerPC PowerNV PCI hotplug driver") # Signed-off-by: Oliver O'Halloran <oohall@gmail.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20191118065553.30362-1-oohall@gmail.com # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 cfe255e01d0d6bf2a23d46613c3d4cfe4505dd02 # < make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- x86_64_defconfig # make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- /kisskb/src/tools/objtool Completed OK # rm -rf /kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8 # Build took: 0:02:29.478373

© Michael Ellerman 2006-2018.