** Tags added: linux-user -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1880722
Title: Changing executable page permissions with mmap causes user-mode failures Status in QEMU: New Bug description: The discussion that led to this bug discovery can be found in this mailing list thread: https://lists.nongnu.org/archive/html/qemu-devel/2020-05/msg05426.html A workaround for this problem would be to check for page crossings for both the user and system modes in the use_goto_tb() function across targets. Some targets like "hppa" already implement this fix but others don't. To solve the root cause of this problem, the linux-user/mmap.c should be fixed to do all the invalidations required. By doing so, up to 6.93% performance improvements will be achieved. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1880722/+subscriptions
