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[Bug 1589704] Re: workaround cavium thunderx silicon erratum 23144
I rebuilt d-i against the kernel in proposed and booted it a couple of
times. I have not reproduced this issue, so marking it verified.
~ # uname -a
Linux cvm3 4.4.0-25-generic #44-Ubuntu SMP Fri Jun 10 18:15:04 UTC 2016 aarch64 GNU/Linux
~ # dmesg | grep -i soft
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-di root=UUID=bc611283-1f38-4993-a2b9-883922c7ed1f ro earlycon=pl011,0x87e024000000 hardlockup_all_cpu_backtrace=1 softlockup_all_cpu_backtrace=1 earlycon=pl011,0x87e024000000 apt-setup/proposed=true
[ 0.000000] software IO TLB [mem 0xfbfed000-0xfffed000] (64MB) mapped at [ffff8000fb1ed000-ffff8000ff1ecfff]
[ 0.229859] CPU features: detected feature: Software prefetching using PRFM
[ 174.913338] xor: measuring software checksum speed
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workaround cavium thunderx silicon erratum 23144
Status in linux package in Ubuntu:
Status in linux source package in Xenial:
This impacts 2 socket Cavium ThunderX systems using pass-1.1 silicon, and can result in IO hangs.
$ dmesg | grep "ITS command queue timeout"
The workaround is in gicv3 specific code, and only activated when the hw revision in the IIDR matches ThunderX pass 1.x silicon, so risk to other platforms is minimal.
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