We still have IRQ remapping enabled on these servers: Nov 27 21:58:47 sgsxeris001 kernel: [ 0.098712] Enabled IRQ remapping in xapic mode
So the proper CMDLINE for kernel is to have: intremap=no_x2apic_optout OR intremap=off (safer) AND nox2apic TOGETHER --> "nox2apic intremap=off" (best option for these Proliant Servers) Judging by HP documentation: """ HP ProLiant Servers do not support hardware interrupt remapping. Please use the following command to override hardware interrupt remapping on Intel platforms: Boot kernel with intremap=no_x2apic_optout option """ Following LP: #1318551 for these servers we should have the cmdline as: "intel_idle.max_cstate=0 nox2apic intremap=off" -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1398497 Title: HP Proliant Serverrs - DL360 and DL380 Gen8 - Precise Kernel Panic - General Protection Fault Status in linux package in Ubuntu: Incomplete Status in linux source package in Precise: Incomplete Bug description: It was brought to my attention the following situation: """ We massively upgraded our Ubuntu 12.04 servers (most of them are HP DL360p Gen8 or DL380 Gen8) to 3.2.0-67 kernel And in the last 2-3 days we already had to reboot 5 of them because they completely hang Some of them had the following messages under syslog : kernel: [384707.675479] general protection fault: 0000 [#5666] SMP others had : kernel: [950725.612724] BUG: unable to handle kernel paging request All of them have this also : your BIOS is broken and requested that x2apic be disabled """ Comments bellow To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1398497/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
