------- Comment From hbath...@in.ibm.com 2024-04-08 07:09 EDT------- CONFIG_KFENCE is the config option that is increasing the memory requirement significantly for radix MMU.
For radix MMU case, memory is direct mapped with 2MB size. But when KFENCE is used, direct mapping is done at pagesize granularity (64K). This sharply increased the page table allocation size, on a 100GB system, from ~23MB to ~3223MB with CONFIG_KFENCE. Experimenting to find if this memory requirement can be brought down. If not, thinking of disabling KFENCE for dump capture environment. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2060039 Title: [Ubuntu-24.04] FADump with recommended crash size is making the L1 hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2060039/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
