On Thu, Dec 14, 2017 at 12:27:32PM +0100, Peter Zijlstra wrote: > From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > > Kernel threads can use the mm of a user process temporarily via use_mm(), > but there is no point in installing the LDT which is associated to that mm > for the kernel thread. So thinking about this a bit more; I fear its not correct. Suppose a kthread does use_mm() and we then schedule to a task of that process, we'll not pass through switch_mm() and we'll not install the LDT and bad things happen. Or am I missing something? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
