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
