Buildresult: powerpc-next/pq2fads_defconfig/powerpc-gcc4.6 built on Nov 18 2019, 23:12

kisskb

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Status:	OK
Date/Time:	Nov 18 2019, 23:12
Duration:	0:00:58.625925
Builder:	blade4b
Revision:	powerpc/powernv: Disable native PCIe port management (`be8d3292869350190dac9cd58c75bc005e3fd5c2)`
Target:	powerpc-next/pq2fads_defconfig/powerpc-gcc4.6
Branch:	powerpc-next
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	pq2fads_defconfig (download)
Log:	Download original Possible warnings (4) include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify be8d3292869350190dac9cd58c75bc005e3fd5c2^{commit} be8d3292869350190dac9cd58c75bc005e3fd5c2 already have revision, skipping fetch # git checkout -q -f -B kisskb be8d3292869350190dac9cd58c75bc005e3fd5c2 # git clean -qxdf # < git log -1 # commit be8d3292869350190dac9cd58c75bc005e3fd5c2 # 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/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 be8d3292869350190dac9cd58c75bc005e3fd5c2 # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- pq2fads_defconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] INFO: Uncompressed kernel (size 0x59374c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x583140) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.4.0-rc2-gbe8d32928693 Created: Mon Nov 18 23:12:58 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2848422 Bytes = 2781.66 KiB = 2.72 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.4.0-rc2-gbe8d32928693 Created: Mon Nov 18 23:12:58 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2880794 Bytes = 2813.28 KiB = 2.75 MiB Load Address: 00600000 Entry Point: 00600888 Completed OK # rm -rf /kisskb/build/powerpc-next_pq2fads_defconfig_powerpc-gcc4.6 # Build took: 0:00:58.625925

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