Hello Christophe, Bisecting isn’t necessary because the problem is in the following files.
drivers/of/base.c drivers/of/device.c drivers/of/of_mdio.c drivers/of/of_numa.c drivers/of/of_private.h drivers/of/overlay.c drivers/of/platform.c drivers/of/unittest-data/overlay_15.dts drivers/of/unittest-data/tests-overlay.dtsi drivers/of/unittest.c include/linux/of.h I removed the OF modifications from the merge commit 'devicetree-for-4.20' and SMP works again. Cheers, Christian Sent from my iPhone > On 29. Oct 2018, at 19:13, LEROY Christophe <christophe.le...@c-s.fr> wrote: > > Christian Zigotzky <chzigot...@xenosoft.de> a écrit : > >> Hello, >> >> I figured out that the problem is in the OF source code of the commit: Merge >> tag devicetree-for-4.20. [1] > > That's a merge commit. Can you bisect the branch and identify the faulting > commit ? > > Christophe > >> >> I reverted the following OF files and SMP works! >> >> drivers/of/base.c >> drivers/of/device.c >> drivers/of/of_mdio.c >> drivers/of/of_numa.c >> drivers/of/of_private.h >> drivers/of/overlay.c >> drivers/of/platform.c >> drivers/of/unittest-data/overlay_15.dts >> drivers/of/unittest-data/tests-overlay.dtsi >> drivers/of/unittest.c >> include/linux/of.h >> >> Cheers, >> Christian >> >> [1] >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b27186abb37b7bd19e0ca434f4f425c807dbd708 >> >> >>> On 29 October 2018 at 10:56AM, Christian Zigotzky wrote: >>> Hello, >>> >>> I have figured out that the commit 'devicetree-for-4.20' [1] is responsible >>> for the SMP problem. I was able to revert this commit with 'git revert >>> b27186abb37b7bd19e0ca434f4f425c807dbd708 -m 1' today. >>> >>> [master ec81438] Revert "Merge tag 'devicetree-for-4.20' of >>> git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux" >>> 138 files changed, 931 insertions(+), 1538 deletions(-) >>> rename Documentation/devicetree/bindings/arm/{atmel-sysregs.txt => >>> atmel-at91.txt} (67%) >>> delete mode 100644 >>> Documentation/devicetree/bindings/arm/freescale/fsl,layerscape-dcfg.txt >>> delete mode 100644 >>> Documentation/devicetree/bindings/arm/freescale/fsl,layerscape-scfg.txt >>> rename Documentation/devicetree/bindings/arm/{zte,sysctrl.txt => zte.txt} >>> (62%) >>> delete mode 100644 Documentation/devicetree/bindings/misc/lwn-bk4.txt >>> create mode 100644 arch/c6x/boot/dts/linked_dtb.S >>> delete mode 100644 arch/nios2/boot/dts/Makefile >>> create mode 100644 arch/nios2/boot/linked_dtb.S >>> delete mode 100644 arch/powerpc/boot/dts/Makefile >>> delete mode 100644 arch/powerpc/boot/dts/fsl/Makefile >>> delete mode 100644 scripts/dtc/yamltree.c >>> >>> It solves the SMP problem! SMP works again on my P5020 board and on virtual >>> e5500 QEMU machines. >>> >>> QEMU command: ./qemu-system-ppc64 -M ppce500 -cpu e5500 -m 2048 -kernel >>> /home/christian/Downloads/uImage-4.20-alpha5 -drive >>> format=raw,file=/home/christian/Dokumente/ubuntu_MATE_16.04.3_LTS_PowerPC_QEMU/ubuntu_MATE_16.04_PowerPC.img,index=0,if=virtio >>> -nic user,model=e1000 -append "rw root=/dev/vda3" -device virtio-vga >>> -device virtio-mouse-pci -device virtio-keyboard-pci -soundhw es1370 -smp 4 >>> >>> Screenshot: >>> https://plus.google.com/u/0/photos/photo/115515624056477014971/6617705776207990082 >>> >>> Do we need a new dtb file or is it a bug? >>> >>> Thanks, >>> Christian >>> >>> [1] >>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b27186abb37b7bd19e0ca434f4f425c807dbd708 >>> >>> >>>> On 28 October 2018 at 5:35PM, Christian Zigotzky wrote: >>>> Hello, >>>> >>>> SMP doesn't work anymore with the latest Git kernel (28/10/18 11:12AM GMT) >>>> on my P5020 board and on virtual e5500 QEMU machines. >>>> >>>> Board with P5020 dual core CPU: >>>> >>>> [ 0.000000] ----------------------------------------------------- >>>> [ 0.000000] phys_mem_size = 0x200000000 >>>> [ 0.000000] dcache_bsize = 0x40 >>>> [ 0.000000] icache_bsize = 0x40 >>>> [ 0.000000] cpu_features = 0x00000003008003b4 >>>> [ 0.000000] possible = 0x00000003009003b4 >>>> [ 0.000000] always = 0x00000003008003b4 >>>> [ 0.000000] cpu_user_features = 0xcc008000 0x08000000 >>>> [ 0.000000] mmu_features = 0x000a0010 >>>> [ 0.000000] firmware_features = 0x0000000000000000 >>>> [ 0.000000] ----------------------------------------------------- >>>> [ 0.000000] CoreNet Generic board >>>> >>>> ... >>>> >>>> [ 0.002161] smp: Bringing up secondary CPUs ... >>>> [ 0.002339] No cpu-release-addr for cpu 1 >>>> [ 0.002347] smp: failed starting cpu 1 (rc -2) >>>> [ 0.002401] smp: Brought up 1 node, 1 CPU >>>> >>>> Virtual e5500 quad core QEMU machine: >>>> >>>> [ 0.026394] smp: Bringing up secondary CPUs ... >>>> [ 0.027831] No cpu-release-addr for cpu 1 >>>> [ 0.027989] smp: failed starting cpu 1 (rc -2) >>>> [ 0.030143] No cpu-release-addr for cpu 2 >>>> [ 0.030304] smp: failed starting cpu 2 (rc -2) >>>> [ 0.032400] No cpu-release-addr for cpu 3 >>>> [ 0.032533] smp: failed starting cpu 3 (rc -2) >>>> [ 0.033117] smp: Brought up 1 node, 1 CPU >>>> >>>> QEMU command: ./qemu-system-ppc64 -M ppce500 -cpu e5500 -m 2048 -kernel >>>> /home/christian/Downloads/vmlinux-4.20-alpha4-AmigaOne_X1000_X5000/X5000_and_QEMU_e5500/uImage-4.20 >>>> -drive >>>> format=raw,file=/home/christian/Downloads/MATE_PowerPC_Remix_2017_0.9.img,index=0,if=virtio >>>> -nic user,model=e1000 -append "rw root=/dev/vda" -device virtio-vga >>>> -device virtio-mouse-pci -device virtio-keyboard-pci -usb -soundhw es1370 >>>> -smp 4 >>>> >>>> .config: >>>> >>>> ... >>>> CONFIG_SMP=y >>>> CONFIG_NR_CPUS=4 >>>> ... >>>> >>>> Please test the latest Git kernel on your NXP P50XX boards. >>>> >>>> Thanks, >>>> Christian >>>> >>> >>> > >
