** Description changed: - The initial report of the issue can be found here: + [Impact] + Fixes an issue where the kernel hits unhandled pagefaults when copy_to_user is called. http://www.spinics.net/lists/arm-kernel/msg381811.html + + [Test Case] + Put the system under memory pressure. + + [Regression Potential] + It will cause a performance regression on certain workloads on arm64 systems.
** Summary changed: - Revert arm64: optimized copy_to_user and copy_from_user assembly code + [Revert] arm64: optimized copy_to_user and copy_from_user assembly code -- 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/1398596 Title: [Revert] arm64: optimized copy_to_user and copy_from_user assembly code Status in linux package in Ubuntu: Incomplete Bug description: [Impact] Fixes an issue where the kernel hits unhandled pagefaults when copy_to_user is called. http://www.spinics.net/lists/arm-kernel/msg381811.html [Test Case] Put the system under memory pressure. [Regression Potential] It will cause a performance regression on certain workloads on arm64 systems. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1398596/+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
