On Tue, Oct 18, 2022 at 02:02:43PM -0700, Dave Hansen wrote: > On 10/18/22 04:33, Kirill A. Shutemov wrote: > > Add a line in /proc/$PID/arch_status to report untag_mask. It can be > > used to find out LAM status of the process from the outside. It is > > useful for debuggers. > > Considering that address masking is not x86-specific, it seems like this > needs a better home (another file in /proc). In generic /proc/$PID/status? And I'm not sure if it is a good idea at this stage. Semantics around tags is not settled across architectures: somewhere it is per-thread, somewhere per-process, somewhere it is global. Maybe keep it arch-specific? > This could even be left out of the series for now, right? Nothing, > including the selftests, depends on it. GDB folks wanted to know the mask. -- Kiryl Shutsemau / Kirill A. Shutemov
