To clarify, I'm suggesting: CONFIG_PAGE_POISONING=y CONFIG_PAGE_POISONING_ZERO=y CONFIG_PAGE_POISONING_NO_SANITY=y
this should have no impact on regular boots, and if someone boots with "page_poison=1" then they get page wiping when page_alloc pages are freed (and then GFP_ZERO is a no-op since it was already freed), so it becomes a reasonable trade-off on performance vs gaining the wipe-on- free ability of the buddy allocator. -- 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/1783651 Title: Please enable CONFIG_PAGE_POISONING Status in linux package in Ubuntu: Incomplete Bug description: I'd like to be able to use page poisoning, but CONFIG_PAGE_POISONING is not enabled on Ubuntu. (This option itself has a near-zero performance impact since it must be combined with the boot option "page_poison=1" to actually enable the poisoning.) To make the poisoning (when enabled) less of an impact, I'd also like to see CONFIG_PAGE_POISONING_ZERO=y too, which means GFP_ZEROing can be skipped. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1783651/+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
